io_submit delay problems revisited

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I believe that io_submit() blocks when it shouldn't.  I have read the two
recent LKML threads on the subject.

My computer is a Thinkpad X60: Core Duo 1.83 with a SATA hard disk and
1.5GB of RAM.  I'm running a plain-vanilla 2.6.19.1 kernel, though the
error is also present under 2.6.18.1.  I have Debian's libaio-dev
0.3.106-3 installed.

I've written a handful of test programs that call the kernel's AIO system
calls (io_submit and io_getevents) directly.  They all exhibit the same
behavior: io_submit() calls take long enough to perform the actual I/O
operation, and io_getevents() returns instantly.  This behavior happens
whether the submitted requests are files on disk or network sockets.

I don't believe it's related to block-layer queueing, per the recent LKML
thread.  The delays happen even when I'm performing 32 parallel 512-byte
I/Os -- probably not enough to overflow any queues at the block layer.
And it happens from the very first io_submit() call, before the
block-layer queues would be full.  Changing
/sys/block/sda/queue/nr_requests has no effect.

I've attached my test program (compilation instructions included) and the
output of strace -T.  Note that nearly all io_submit calls take 10+
milliseconds, which is right where you'd expect the seek time on a laptop
hard drive to be.  Also note that the io_getevents calls return all 32
outstanding I/Os at once -- why would 32 disk seeks all finish at the same
time?

Any ideas?

--Patrick
/* Test program for Linux AIO functions.
 * Reads random 512-byte chunks of random files, 32 at a time.
 * Demonstrates io_submit() and io_getevents() delay behavior.
 *
 * Build it:
     gcc -g -Wall -Werror aiotest.c -o aiotest -laio
 * Run it:
     ./aiotest FILES...
 * Running it with 'strace -To trace.file ./aiotest FILES...' is handy, too.
 * Ideally, list enough files to exceed the cache/buffer memory of your
 * computer, so the program is forced to read from the disk.
 */

#include <time.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <fcntl.h>
#include <errno.h>
#include <libaio.h>
#include <stdlib.h>

#define AIO_BLKSIZE 512
#define AIO_MAXIO   32

static int nfiles;
static int *fd;
static struct stat *st;
static char buf[AIO_MAXIO][AIO_BLKSIZE];
static io_context_t myctx;
static struct iocb io[AIO_MAXIO];

/* Fatal error handler */
static void io_error(const char *func, int rc) {
	if (rc == -ENOSYS)
		fprintf(stderr, "AIO not in this kernel\n");
	else if (rc < 0)
		fprintf(stderr, "%s: %s\n", func, strerror(-rc));

	exit(1);
}

static void queue_another(int which) {
	int file = rand() % nfiles;
	int ofs = (rand() % (st[file].st_size / AIO_BLKSIZE)) * AIO_BLKSIZE;
	printf("%d: buf=%p file=%d ofs=%d\n", which, buf[which], file, ofs);
	io_prep_pread(&io[which], fd[file], buf[which], AIO_BLKSIZE, ofs);
	struct iocb *iop = &io[which];
	int rc = io_submit(myctx, 1, &iop);
	if (rc < 0)
		io_error("io_submit", rc);
}

int main(int argc, char *const *argv) {
	srand(time(0));
	nfiles = argc-1;
	fd = (int*)malloc(sizeof(int) * nfiles);
	st = (struct stat*)malloc(sizeof(struct stat) * nfiles);
	int i;

	for (i=0; i<nfiles; i++) {
		fd[i] = open(argv[i+1], O_RDONLY);
		if (fd[i] == -1) { perror(argv[i+1]); exit(1); }
		fstat(fd[i], &st[i]);
	}

	io_queue_init(AIO_MAXIO, &myctx);

	for (i=0; i<AIO_MAXIO; i++)
		queue_another(i);

	while (1) {
		struct io_event events[AIO_MAXIO];
		int rc = io_getevents(myctx, 1, AIO_MAXIO, events, NULL);
		if (rc < 0)
			io_error("io_getevents", rc);

		printf("%d events\n", rc);
		for (i=0; i<rc; i++) {
			int key = events[i].obj - &io[0];
			if (events[i].res2 != 0)
				io_error("aio read", events[i].res2);
			if (events[i].res != events[i].obj->u.c.nbytes) {
				fprintf(stderr, "read missing bytes expect %lu got %ld\n",
					events[i].obj->u.c.nbytes, events[i].res);
				exit(1);
			}
			queue_another(key);
		}
	}

	return 0;
}
4174  execve("./aiotest", ["./aiotest", "video/movies/Battle of Algiers.a"..., "video/movies/Corpse.Bride.avi", "video/movies/Das Boot (1).avi", "video/movies/Das Boot (2).avi", "video/movies/Demolition.Man.avi", "video/movies/Syriana.1of2.avi", "video/movies/Syriana.2of2.avi"], [/* 35 vars */]) = 0 <0.000116>
4174  uname({sys="Linux", node="muon", ...}) = 0 <0.000005>
4174  brk(0)                            = 0x804e000 <0.000005>
4174  access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) <0.000008>
4174  mmap2(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7efa000 <0.000007>
4174  access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) <0.000007>
4174  open("/etc/ld.so.cache", O_RDONLY) = 3 <0.000008>
4174  fstat64(3, {st_mode=S_IFREG|0644, st_size=63372, ...}) = 0 <0.000005>
4174  mmap2(NULL, 63372, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7eea000 <0.000007>
4174  close(3)                          = 0 <0.000005>
4174  access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) <0.000007>
4174  open("/usr/lib/libaio.so.1", O_RDONLY) = 3 <0.000014>
4174  read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\340\3\0"..., 512) = 512 <0.000010>
4174  fstat64(3, {st_mode=S_IFREG|0644, st_size=2624, ...}) = 0 <0.000005>
4174  mmap2(NULL, 6108, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7ee8000 <0.000006>
4174  mmap2(0xb7ee9000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = 0xb7ee9000 <0.000009>
4174  close(3)                          = 0 <0.000005>
4174  access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) <0.000007>
4174  open("/lib/tls/libc.so.6", O_RDONLY) = 3 <0.000009>
4174  read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\240O\1"..., 512) = 512 <0.000007>
4174  fstat64(3, {st_mode=S_IFREG|0644, st_size=1241580, ...}) = 0 <0.000006>
4174  mmap2(NULL, 1251484, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7db6000 <0.000006>
4174  mmap2(0xb7ede000, 28672, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x127) = 0xb7ede000 <0.000010>
4174  mmap2(0xb7ee5000, 10396, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7ee5000 <0.000008>
4174  close(3)                          = 0 <0.000005>
4174  mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7db5000 <0.000007>
4174  mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7db4000 <0.000006>
4174  mprotect(0xb7ede000, 20480, PROT_READ) = 0 <0.000007>
4174  set_thread_area({entry_number:-1 -> 6, base_addr:0xb7db5b80, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0 <0.000005>
4174  munmap(0xb7eea000, 63372)         = 0 <0.000009>
4174  time(NULL)                        = 1166827480 <0.000006>
4174  brk(0)                            = 0x804e000 <0.000014>
4174  brk(0x806f000)                    = 0x806f000 <0.000006>
4174  open("video/movies/Battle of Algiers.avi", O_RDONLY) = 3 <0.000009>
4174  fstat64(3, {st_mode=S_IFREG|0644, st_size=1208255676, ...}) = 0 <0.000005>
4174  open("video/movies/Corpse.Bride.avi", O_RDONLY) = 4 <0.000008>
4174  fstat64(4, {st_mode=S_IFREG|0644, st_size=751358934, ...}) = 0 <0.000005>
4174  open("video/movies/Das Boot (1).avi", O_RDONLY) = 5 <0.000008>
4174  fstat64(5, {st_mode=S_IFREG|0644, st_size=1087859242, ...}) = 0 <0.000005>
4174  open("video/movies/Das Boot (2).avi", O_RDONLY) = 6 <0.000008>
4174  fstat64(6, {st_mode=S_IFREG|0644, st_size=1002766554, ...}) = 0 <0.000006>
4174  open("video/movies/Demolition.Man.avi", O_RDONLY) = 7 <0.000009>
4174  fstat64(7, {st_mode=S_IFREG|0644, st_size=823088586, ...}) = 0 <0.000005>
4174  open("video/movies/Syriana.1of2.avi", O_RDONLY) = 8 <0.000008>
4174  fstat64(8, {st_mode=S_IFREG|0644, st_size=729851904, ...}) = 0 <0.000006>
4174  open("video/movies/Syriana.2of2.avi", O_RDONLY) = 9 <0.000009>
4174  fstat64(9, {st_mode=S_IFREG|0644, st_size=732096512, ...}) = 0 <0.000005>
4174  io_setup(32, {3085930496})        = 0 <0.000009>
4174  fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0 <0.000005>
4174  mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7ef8000 <0.000006>
4174  write(1, "0: buf=0x80491a0 file=4 ofs=1076"..., 38) = 38 <0.000132>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017180>
4174  write(1, "1: buf=0x80493a0 file=3 ofs=7788"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015462>
4174  write(1, "2: buf=0x80495a0 file=2 ofs=2300"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017528>
4174  write(1, "3: buf=0x80497a0 file=1 ofs=1779"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000013>
4174  write(1, "4: buf=0x80499a0 file=0 ofs=5148"..., 38) = 38 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015922>
4174  write(1, "5: buf=0x8049ba0 file=6 ofs=2680"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014836>
4174  write(1, "6: buf=0x8049da0 file=4 ofs=2379"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017865>
4174  write(1, "7: buf=0x8049fa0 file=0 ofs=2934"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.027149>
4174  write(1, "8: buf=0x804a1a0 file=4 ofs=5350"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014032>
4174  write(1, "9: buf=0x804a3a0 file=6 ofs=5139"..., 38) = 38 <0.000012>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017021>
4174  write(1, "10: buf=0x804a5a0 file=6 ofs=446"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.009444>
4174  write(1, "11: buf=0x804a7a0 file=0 ofs=461"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017931>
4174  write(1, "12: buf=0x804a9a0 file=3 ofs=533"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012992>
4174  write(1, "13: buf=0x804aba0 file=1 ofs=475"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.026385>
4174  write(1, "14: buf=0x804ada0 file=3 ofs=703"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017411>
4174  write(1, "15: buf=0x804afa0 file=6 ofs=596"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019134>
4174  write(1, "16: buf=0x804b1a0 file=3 ofs=251"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012837>
4174  write(1, "17: buf=0x804b3a0 file=0 ofs=399"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.029150>
4174  write(1, "18: buf=0x804b5a0 file=5 ofs=649"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011563>
4174  write(1, "19: buf=0x804b7a0 file=3 ofs=524"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014072>
4174  write(1, "20: buf=0x804b9a0 file=3 ofs=158"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.023970>
4174  write(1, "21: buf=0x804bba0 file=5 ofs=199"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013748>
4174  write(1, "22: buf=0x804bda0 file=2 ofs=438"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014083>
4174  write(1, "23: buf=0x804bfa0 file=2 ofs=536"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014740>
4174  write(1, "24: buf=0x804c1a0 file=1 ofs=260"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011654>
4174  write(1, "25: buf=0x804c3a0 file=0 ofs=364"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015923>
4174  write(1, "26: buf=0x804c5a0 file=6 ofs=479"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016446>
4174  write(1, "27: buf=0x804c7a0 file=2 ofs=160"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019501>
4174  write(1, "28: buf=0x804c9a0 file=5 ofs=853"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014751>
4174  write(1, "29: buf=0x804cba0 file=0 ofs=414"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014656>
4174  write(1, "30: buf=0x804cda0 file=4 ofs=800"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011572>
4174  write(1, "31: buf=0x804cfa0 file=5 ofs=665"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014073>
4174  io_getevents(-1209036800, 1, 32, {...}NULL) = 32 <0.000021>
4174  write(1, "32 events\n", 10)       = 10 <0.000009>
4174  write(1, "0: buf=0x80491a0 file=2 ofs=5520"..., 38) = 38 <0.000006>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012545>
4174  write(1, "1: buf=0x80493a0 file=3 ofs=4093"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018991>
4174  write(1, "2: buf=0x80495a0 file=5 ofs=5528"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.025024>
4174  write(1, "3: buf=0x80497a0 file=2 ofs=5766"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.026663>
4174  write(1, "4: buf=0x80499a0 file=5 ofs=6184"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010602>
4174  write(1, "5: buf=0x8049ba0 file=4 ofs=4585"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.029126>
4174  write(1, "6: buf=0x8049da0 file=1 ofs=4810"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.025979>
4174  write(1, "7: buf=0x8049fa0 file=6 ofs=2464"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015651>
4174  write(1, "8: buf=0x804a1a0 file=5 ofs=6295"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015600>
4174  write(1, "9: buf=0x804a3a0 file=1 ofs=2686"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011166>
4174  write(1, "10: buf=0x804a5a0 file=2 ofs=195"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014641>
4174  write(1, "11: buf=0x804a7a0 file=6 ofs=450"..., 37) = 37 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.026915>
4174  write(1, "12: buf=0x804a9a0 file=6 ofs=156"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.005093>
4174  write(1, "13: buf=0x804aba0 file=5 ofs=630"..., 39) = 39 <0.000010>
4174  io_submit(3085930496, 1, {...})   = 1 <0.006291>
4174  write(1, "14: buf=0x804ada0 file=6 ofs=489"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013230>
4174  write(1, "15: buf=0x804afa0 file=5 ofs=698"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015082>
4174  write(1, "16: buf=0x804b1a0 file=1 ofs=533"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.023893>
4174  write(1, "17: buf=0x804b3a0 file=4 ofs=718"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.030084>
4174  write(1, "18: buf=0x804b5a0 file=6 ofs=378"..., 36) = 36 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015990>
4174  write(1, "19: buf=0x804b7a0 file=6 ofs=301"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.008442>
4174  write(1, "20: buf=0x804b9a0 file=2 ofs=899"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.020041>
4174  write(1, "21: buf=0x804bba0 file=4 ofs=621"..., 39) = 39 <0.000011>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018573>
4174  write(1, "22: buf=0x804bda0 file=1 ofs=709"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017354>
4174  write(1, "23: buf=0x804bfa0 file=3 ofs=375"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013393>
4174  write(1, "24: buf=0x804c1a0 file=5 ofs=356"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018264>
4174  write(1, "25: buf=0x804c3a0 file=4 ofs=577"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014255>
4174  write(1, "26: buf=0x804c5a0 file=4 ofs=184"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014065>
4174  write(1, "27: buf=0x804c7a0 file=3 ofs=520"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010836>
4174  write(1, "28: buf=0x804c9a0 file=3 ofs=976"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011637>
4174  write(1, "29: buf=0x804cba0 file=3 ofs=963"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.003002>
4174  write(1, "30: buf=0x804cda0 file=4 ofs=500"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019087>
4174  write(1, "31: buf=0x804cfa0 file=6 ofs=135"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.009999>
4174  io_getevents(-1209036800, 1, 32, {...}NULL) = 32 <0.000021>
4174  write(1, "32 events\n", 10)       = 10 <0.000009>
4174  write(1, "0: buf=0x80491a0 file=1 ofs=4847"..., 38) = 38 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011835>
4174  write(1, "1: buf=0x80493a0 file=2 ofs=2062"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019793>
4174  write(1, "2: buf=0x80495a0 file=6 ofs=6537"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013386>
4174  write(1, "3: buf=0x80497a0 file=0 ofs=9944"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019182>
4174  write(1, "4: buf=0x80499a0 file=3 ofs=7532"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.025575>
4174  write(1, "5: buf=0x8049ba0 file=1 ofs=7165"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.023218>
4174  write(1, "6: buf=0x8049da0 file=3 ofs=1663"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016262>
4174  write(1, "7: buf=0x8049fa0 file=1 ofs=2448"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000009>
4174  write(1, "8: buf=0x804a1a0 file=5 ofs=1832"..., 37) = 37 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013418>
4174  write(1, "9: buf=0x804a3a0 file=4 ofs=7444"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.021357>
4174  write(1, "10: buf=0x804a5a0 file=0 ofs=572"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.026794>
4174  write(1, "11: buf=0x804a7a0 file=2 ofs=102"..., 40) = 40 <0.000018>
4174  io_submit(3085930496, 1, {...})   = 1 <0.009994>
4174  write(1, "12: buf=0x804a9a0 file=5 ofs=469"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014954>
4174  write(1, "13: buf=0x804aba0 file=1 ofs=160"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000009>
4174  write(1, "14: buf=0x804ada0 file=2 ofs=616"..., 39) = 39 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011786>
4174  write(1, "15: buf=0x804afa0 file=5 ofs=231"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018081>
4174  write(1, "16: buf=0x804b1a0 file=2 ofs=512"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019222>
4174  write(1, "17: buf=0x804b3a0 file=4 ofs=270"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011493>
4174  write(1, "18: buf=0x804b5a0 file=0 ofs=648"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016847>
4174  write(1, "19: buf=0x804b7a0 file=5 ofs=870"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015240>
4174  write(1, "20: buf=0x804b9a0 file=6 ofs=482"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010976>
4174  write(1, "21: buf=0x804bba0 file=3 ofs=453"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016933>
4174  write(1, "22: buf=0x804bda0 file=0 ofs=509"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014420>
4174  write(1, "23: buf=0x804bfa0 file=6 ofs=313"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013393>
4174  write(1, "24: buf=0x804c1a0 file=4 ofs=183"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.022811>
4174  write(1, "25: buf=0x804c3a0 file=2 ofs=614"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019264>
4174  write(1, "26: buf=0x804c5a0 file=0 ofs=494"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016771>
4174  write(1, "27: buf=0x804c7a0 file=6 ofs=196"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018411>
4174  write(1, "28: buf=0x804c9a0 file=5 ofs=266"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013825>
4174  write(1, "29: buf=0x804cba0 file=6 ofs=986"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016450>
4174  write(1, "30: buf=0x804cda0 file=6 ofs=185"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012223>
4174  write(1, "31: buf=0x804cfa0 file=0 ofs=129"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.026361>
4174  io_getevents(-1209036800, 1, 32, {...}NULL) = 32 <0.000020>
4174  write(1, "32 events\n", 10)       = 10 <0.000008>
4174  write(1, "0: buf=0x80491a0 file=3 ofs=1570"..., 38) = 38 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.009199>
4174  write(1, "1: buf=0x80493a0 file=5 ofs=1448"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.026225>
4174  write(1, "2: buf=0x80495a0 file=0 ofs=1090"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018131>
4174  write(1, "3: buf=0x80497a0 file=3 ofs=5311"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015623>
4174  write(1, "4: buf=0x80499a0 file=1 ofs=1716"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000012>
4174  write(1, "5: buf=0x8049ba0 file=3 ofs=1891"..., 38) = 38 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011563>
4174  write(1, "6: buf=0x8049da0 file=5 ofs=6370"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.030352>
4174  write(1, "7: buf=0x8049fa0 file=3 ofs=9827"..., 38) = 38 <0.000013>
4174  io_submit(3085930496, 1, {...})   = 1 <0.024121>
4174  write(1, "8: buf=0x804a1a0 file=2 ofs=2555"..., 38) = 38 <0.000010>
4174  io_submit(3085930496, 1, {...})   = 1 <0.025991>
4174  write(1, "9: buf=0x804a3a0 file=2 ofs=2836"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014186>
4174  write(1, "10: buf=0x804a5a0 file=0 ofs=100"..., 40) = 40 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011700>
4174  write(1, "11: buf=0x804a7a0 file=0 ofs=820"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.027478>
4174  write(1, "12: buf=0x804a9a0 file=5 ofs=549"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012349>
4174  write(1, "13: buf=0x804aba0 file=2 ofs=104"..., 40) = 40 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013741>
4174  write(1, "14: buf=0x804ada0 file=2 ofs=689"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013649>
4174  write(1, "15: buf=0x804afa0 file=1 ofs=693"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015151>
4174  write(1, "16: buf=0x804b1a0 file=2 ofs=236"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.030023>
4174  write(1, "17: buf=0x804b3a0 file=0 ofs=564"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.005926>
4174  write(1, "18: buf=0x804b5a0 file=0 ofs=112"..., 40) = 40 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.020958>
4174  write(1, "19: buf=0x804b7a0 file=5 ofs=434"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012797>
4174  write(1, "20: buf=0x804b9a0 file=2 ofs=579"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.020311>
4174  write(1, "21: buf=0x804bba0 file=0 ofs=898"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014565>
4174  write(1, "22: buf=0x804bda0 file=1 ofs=686"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000009>
4174  write(1, "23: buf=0x804bfa0 file=3 ofs=655"..., 39) = 39 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016777>
4174  write(1, "24: buf=0x804c1a0 file=5 ofs=707"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.020578>
4174  write(1, "25: buf=0x804c3a0 file=3 ofs=615"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019584>
4174  write(1, "26: buf=0x804c5a0 file=3 ofs=281"..., 39) = 39 <0.000010>
4174  io_submit(3085930496, 1, {...})   = 1 <0.007036>
4174  write(1, "27: buf=0x804c7a0 file=0 ofs=971"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017238>
4174  write(1, "28: buf=0x804c9a0 file=6 ofs=802"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.009738>
4174  write(1, "29: buf=0x804cba0 file=1 ofs=250"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000009>
4174  write(1, "30: buf=0x804cda0 file=5 ofs=502"..., 39) = 39 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011256>
4174  write(1, "31: buf=0x804cfa0 file=5 ofs=328"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.005872>
4174  io_getevents(-1209036800, 1, 32, {...}NULL) = 32 <0.000021>
4174  write(1, "32 events\n", 10)       = 10 <0.000008>
4174  write(1, "0: buf=0x80491a0 file=4 ofs=5907"..., 38) = 38 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016080>
4174  write(1, "1: buf=0x80493a0 file=6 ofs=3009"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016435>
4174  write(1, "2: buf=0x80495a0 file=5 ofs=3477"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.021177>
4174  write(1, "3: buf=0x80497a0 file=2 ofs=5701"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014682>
4174  write(1, "4: buf=0x80499a0 file=1 ofs=3722"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.021556>
4174  write(1, "5: buf=0x8049ba0 file=1 ofs=5067"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.007094>
4174  write(1, "6: buf=0x8049da0 file=2 ofs=3705"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.025850>
4174  write(1, "7: buf=0x8049fa0 file=2 ofs=1901"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018750>
4174  write(1, "8: buf=0x804a1a0 file=6 ofs=5650"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015734>
4174  write(1, "9: buf=0x804a3a0 file=3 ofs=3380"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.020217>
4174  write(1, "10: buf=0x804a5a0 file=0 ofs=114"..., 40) = 40 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.026826>
4174  write(1, "11: buf=0x804a7a0 file=6 ofs=230"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011542>
4174  write(1, "12: buf=0x804a9a0 file=6 ofs=329"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.009654>
4174  write(1, "13: buf=0x804aba0 file=4 ofs=528"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.026406>
4174  write(1, "14: buf=0x804ada0 file=3 ofs=427"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016500>
4174  write(1, "15: buf=0x804afa0 file=1 ofs=100"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000009>
4174  write(1, "16: buf=0x804b1a0 file=4 ofs=611"..., 39) = 39 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.024042>
4174  write(1, "17: buf=0x804b3a0 file=2 ofs=363"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.027080>
4174  write(1, "18: buf=0x804b5a0 file=0 ofs=115"..., 40) = 40 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010905>
4174  write(1, "19: buf=0x804b7a0 file=4 ofs=201"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010708>
4174  write(1, "20: buf=0x804b9a0 file=5 ofs=169"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015355>
4174  write(1, "21: buf=0x804bba0 file=6 ofs=348"..., 39) = 39 <0.000013>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013631>
4174  write(1, "22: buf=0x804bda0 file=6 ofs=404"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014670>
4174  write(1, "23: buf=0x804bfa0 file=5 ofs=398"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012677>
4174  write(1, "24: buf=0x804c1a0 file=0 ofs=267"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019914>
4174  write(1, "25: buf=0x804c3a0 file=5 ofs=234"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014180>
4174  write(1, "26: buf=0x804c5a0 file=1 ofs=371"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019000>
4174  write(1, "27: buf=0x804c7a0 file=1 ofs=258"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011898>
4174  write(1, "28: buf=0x804c9a0 file=5 ofs=387"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017608>
4174  write(1, "29: buf=0x804cba0 file=3 ofs=756"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.022112>
4174  write(1, "30: buf=0x804cda0 file=6 ofs=252"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.031172>
4174  write(1, "31: buf=0x804cfa0 file=6 ofs=486"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.004725>
4174  io_getevents(-1209036800, 1, 32, {...}NULL) = 32 <0.000020>
4174  write(1, "32 events\n", 10)       = 10 <0.000008>
4174  write(1, "0: buf=0x80491a0 file=0 ofs=6389"..., 38) = 38 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017748>
4174  write(1, "1: buf=0x80493a0 file=0 ofs=6146"..., 37) = 37 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017329>
4174  write(1, "2: buf=0x80495a0 file=4 ofs=3591"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013124>
4174  write(1, "3: buf=0x80497a0 file=4 ofs=1867"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013702>
4174  write(1, "4: buf=0x80499a0 file=0 ofs=5694"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016742>
4174  write(1, "5: buf=0x8049ba0 file=1 ofs=3959"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.023550>
4174  write(1, "6: buf=0x8049da0 file=5 ofs=7855"..., 37) = 37 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012542>
4174  write(1, "7: buf=0x8049fa0 file=4 ofs=5294"..., 37) = 37 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011893>
4174  write(1, "8: buf=0x804a1a0 file=0 ofs=2430"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.030291>
4174  write(1, "9: buf=0x804a3a0 file=0 ofs=1010"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017694>
4174  write(1, "10: buf=0x804a5a0 file=0 ofs=841"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011733>
4174  write(1, "11: buf=0x804a7a0 file=5 ofs=596"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.008462>
4174  write(1, "12: buf=0x804a9a0 file=5 ofs=645"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.025803>
4174  write(1, "13: buf=0x804aba0 file=4 ofs=441"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017869>
4174  write(1, "14: buf=0x804ada0 file=2 ofs=441"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.020430>
4174  write(1, "15: buf=0x804afa0 file=4 ofs=413"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.022118>
4174  write(1, "16: buf=0x804b1a0 file=1 ofs=295"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013347>
4174  write(1, "17: buf=0x804b3a0 file=6 ofs=143"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010352>
4174  write(1, "18: buf=0x804b5a0 file=6 ofs=705"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019867>
4174  write(1, "19: buf=0x804b7a0 file=4 ofs=309"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011715>
4174  write(1, "20: buf=0x804b9a0 file=6 ofs=132"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.008164>
4174  write(1, "21: buf=0x804bba0 file=4 ofs=520"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016673>
4174  write(1, "22: buf=0x804bda0 file=2 ofs=827"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012880>
4174  write(1, "23: buf=0x804bfa0 file=6 ofs=666"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017367>
4174  write(1, "24: buf=0x804c1a0 file=0 ofs=668"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013732>
4174  write(1, "25: buf=0x804c3a0 file=6 ofs=672"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013914>
4174  write(1, "26: buf=0x804c5a0 file=5 ofs=134"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.008976>
4174  write(1, "27: buf=0x804c7a0 file=4 ofs=446"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.007530>
4174  write(1, "28: buf=0x804c9a0 file=3 ofs=170"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.025820>
4174  write(1, "29: buf=0x804cba0 file=5 ofs=232"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013670>
4174  write(1, "30: buf=0x804cda0 file=1 ofs=332"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011790>
4174  write(1, "31: buf=0x804cfa0 file=4 ofs=548"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017872>
4174  io_getevents(-1209036800, 1, 32, {...}NULL) = 32 <0.000020>
4174  write(1, "32 events\n", 10)       = 10 <0.000009>
4174  write(1, "0: buf=0x80491a0 file=3 ofs=7947"..., 36) = 36 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011969>
4174  write(1, "1: buf=0x80493a0 file=6 ofs=8201"..., 37) = 37 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011581>
4174  write(1, "2: buf=0x80495a0 file=6 ofs=1390"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.020857>
4174  write(1, "3: buf=0x80497a0 file=0 ofs=2264"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018711>
4174  write(1, "4: buf=0x80499a0 file=0 ofs=1132"..., 39) = 39 <0.000012>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016234>
4174  write(1, "5: buf=0x8049ba0 file=0 ofs=2616"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012753>
4174  write(1, "6: buf=0x8049da0 file=5 ofs=8506"..., 37) = 37 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019575>
4174  write(1, "7: buf=0x8049fa0 file=0 ofs=2541"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017872>
4174  write(1, "8: buf=0x804a1a0 file=1 ofs=2124"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000010>
4174  write(1, "9: buf=0x804a3a0 file=2 ofs=6627"..., 37) = 37 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.026547>
4174  write(1, "10: buf=0x804a5a0 file=3 ofs=809"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014340>
4174  write(1, "11: buf=0x804a7a0 file=0 ofs=700"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010100>
4174  write(1, "12: buf=0x804a9a0 file=5 ofs=276"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.009896>
4174  write(1, "13: buf=0x804aba0 file=0 ofs=609"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011778>
4174  write(1, "14: buf=0x804ada0 file=5 ofs=327"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014390>
4174  write(1, "15: buf=0x804afa0 file=0 ofs=400"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011625>
4174  write(1, "16: buf=0x804b1a0 file=0 ofs=944"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018720>
4174  write(1, "17: buf=0x804b3a0 file=2 ofs=920"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011400>
4174  write(1, "18: buf=0x804b5a0 file=0 ofs=786"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.023524>
4174  write(1, "19: buf=0x804b7a0 file=2 ofs=429"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016433>
4174  write(1, "20: buf=0x804b9a0 file=0 ofs=517"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011463>
4174  write(1, "21: buf=0x804bba0 file=1 ofs=600"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.020789>
4174  write(1, "22: buf=0x804bda0 file=5 ofs=456"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.009188>
4174  write(1, "23: buf=0x804bfa0 file=0 ofs=908"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015381>
4174  write(1, "24: buf=0x804c1a0 file=0 ofs=108"..., 40) = 40 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010143>
4174  write(1, "25: buf=0x804c3a0 file=4 ofs=750"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019091>
4174  write(1, "26: buf=0x804c5a0 file=5 ofs=252"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.006819>
4174  write(1, "27: buf=0x804c7a0 file=5 ofs=424"..., 38) = 38 <0.000010>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013300>
4174  write(1, "28: buf=0x804c9a0 file=0 ofs=332"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.025072>
4174  write(1, "29: buf=0x804cba0 file=6 ofs=337"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017781>
4174  write(1, "30: buf=0x804cda0 file=1 ofs=370"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013309>
4174  write(1, "31: buf=0x804cfa0 file=3 ofs=344"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014215>
4174  io_getevents(-1209036800, 1, 32, {...}NULL) = 32 <0.000021>
4174  write(1, "32 events\n", 10)       = 10 <0.000008>
4174  write(1, "0: buf=0x80491a0 file=5 ofs=3997"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.028436>
4174  write(1, "1: buf=0x80493a0 file=5 ofs=6997"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012078>
4174  write(1, "2: buf=0x80495a0 file=6 ofs=4753"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015553>
4174  write(1, "3: buf=0x80497a0 file=4 ofs=2458"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015011>
4174  write(1, "4: buf=0x80499a0 file=6 ofs=3465"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015012>
4174  write(1, "5: buf=0x8049ba0 file=1 ofs=6069"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.023306>
4174  write(1, "6: buf=0x8049da0 file=4 ofs=8104"..., 37) = 37 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014487>
4174  write(1, "7: buf=0x8049fa0 file=1 ofs=5295"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012166>
4174  write(1, "8: buf=0x804a1a0 file=1 ofs=3656"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.029400>
4174  write(1, "9: buf=0x804a3a0 file=3 ofs=2399"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019849>
4174  write(1, "10: buf=0x804a5a0 file=4 ofs=791"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011051>
4174  write(1, "11: buf=0x804a7a0 file=6 ofs=645"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.030496>
4174  write(1, "12: buf=0x804a9a0 file=6 ofs=258"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.009741>
4174  write(1, "13: buf=0x804aba0 file=0 ofs=459"..., 37) = 37 <0.000014>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000015>
4174  write(1, "14: buf=0x804ada0 file=4 ofs=509"..., 39) = 39 <0.000013>
4174  io_submit(3085930496, 1, {...})   = 1 <0.021326>
4174  write(1, "15: buf=0x804afa0 file=0 ofs=459"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.020621>
4174  write(1, "16: buf=0x804b1a0 file=0 ofs=100"..., 40) = 40 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011228>
4174  write(1, "17: buf=0x804b3a0 file=6 ofs=458"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012941>
4174  write(1, "18: buf=0x804b5a0 file=2 ofs=104"..., 40) = 40 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017161>
4174  write(1, "19: buf=0x804b7a0 file=1 ofs=134"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000009>
4174  write(1, "20: buf=0x804b9a0 file=3 ofs=531"..., 39) = 39 <0.002483>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000473>
4174  write(1, "21: buf=0x804bba0 file=3 ofs=904"..., 39) = 39 <0.000010>
4174  io_submit(3085930496, 1, {...})   = 1 <0.008164>
4174  write(1, "22: buf=0x804bda0 file=1 ofs=148"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000010>
4174  write(1, "23: buf=0x804bfa0 file=0 ofs=199"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.009579>
4174  write(1, "24: buf=0x804c1a0 file=5 ofs=398"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010656>
4174  write(1, "25: buf=0x804c3a0 file=1 ofs=517"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.020841>
4174  write(1, "26: buf=0x804c5a0 file=4 ofs=629"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017364>
4174  write(1, "27: buf=0x804c7a0 file=5 ofs=283"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012391>
4174  write(1, "28: buf=0x804c9a0 file=4 ofs=587"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.008045>
4174  write(1, "29: buf=0x804cba0 file=3 ofs=523"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013326>
4174  write(1, "30: buf=0x804cda0 file=5 ofs=685"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011844>
4174  write(1, "31: buf=0x804cfa0 file=2 ofs=949"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018813>
4174  io_getevents(-1209036800, 1, 32, {...}NULL) = 32 <0.000027>
4174  write(1, "32 events\n", 10)       = 10 <0.000008>
4174  write(1, "0: buf=0x80491a0 file=0 ofs=1122"..., 39) = 39 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015184>
4174  write(1, "1: buf=0x80493a0 file=0 ofs=5240"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.023473>
4174  write(1, "2: buf=0x80495a0 file=0 ofs=5752"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011306>
4174  write(1, "3: buf=0x80497a0 file=2 ofs=1005"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012046>
4174  write(1, "4: buf=0x80499a0 file=2 ofs=1655"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014602>
4174  write(1, "5: buf=0x8049ba0 file=0 ofs=3582"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014178>
4174  write(1, "6: buf=0x8049da0 file=0 ofs=1046"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.008669>
4174  write(1, "7: buf=0x8049fa0 file=4 ofs=1007"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014036>
4174  write(1, "8: buf=0x804a1a0 file=4 ofs=6829"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012906>
4174  write(1, "9: buf=0x804a3a0 file=5 ofs=1072"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012653>
4174  write(1, "10: buf=0x804a5a0 file=4 ofs=705"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013319>
4174  write(1, "11: buf=0x804a7a0 file=4 ofs=191"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.020272>
4174  write(1, "12: buf=0x804a9a0 file=5 ofs=604"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018300>
4174  write(1, "13: buf=0x804aba0 file=0 ofs=520"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017563>
4174  write(1, "14: buf=0x804ada0 file=6 ofs=240"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.022803>
4174  write(1, "15: buf=0x804afa0 file=6 ofs=344"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019614>
4174  write(1, "16: buf=0x804b1a0 file=1 ofs=315"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000009>
4174  write(1, "17: buf=0x804b3a0 file=1 ofs=584"..., 39) = 39 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.022318>
4174  write(1, "18: buf=0x804b5a0 file=6 ofs=718"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.008955>
4174  write(1, "19: buf=0x804b7a0 file=2 ofs=767"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016031>
4174  write(1, "20: buf=0x804b9a0 file=0 ofs=114"..., 40) = 40 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012461>
4174  write(1, "21: buf=0x804bba0 file=2 ofs=507"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.007070>
4174  write(1, "22: buf=0x804bda0 file=1 ofs=324"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018768>
4174  write(1, "23: buf=0x804bfa0 file=1 ofs=470"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019747>
4174  write(1, "24: buf=0x804c1a0 file=3 ofs=184"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016867>
4174  write(1, "25: buf=0x804c3a0 file=6 ofs=464"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.021829>
4174  write(1, "26: buf=0x804c5a0 file=0 ofs=174"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017781>
4174  write(1, "27: buf=0x804c7a0 file=6 ofs=319"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.009644>
4174  write(1, "28: buf=0x804c9a0 file=4 ofs=562"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011306>
4174  write(1, "29: buf=0x804cba0 file=5 ofs=486"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.021891>
4174  write(1, "30: buf=0x804cda0 file=0 ofs=235"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018516>
4174  write(1, "31: buf=0x804cfa0 file=3 ofs=101"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014383>
4174  io_getevents(-1209036800, 1, 32, {...}NULL) = 32 <0.000020>
4174  write(1, "32 events\n", 10)       = 10 <0.000008>
4174  write(1, "0: buf=0x80491a0 file=0 ofs=7777"..., 38) = 38 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013939>
4174  write(1, "1: buf=0x80493a0 file=0 ofs=3300"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017359>
4174  write(1, "2: buf=0x80495a0 file=6 ofs=4705"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018679>
4174  write(1, "3: buf=0x80497a0 file=3 ofs=2803"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.031258>
4174  write(1, "4: buf=0x80499a0 file=0 ofs=8003"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.007422>
4174  write(1, "5: buf=0x8049ba0 file=5 ofs=6047"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.022258>
4174  write(1, "6: buf=0x8049da0 file=5 ofs=1655"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013908>
4174  write(1, "7: buf=0x8049fa0 file=6 ofs=5009"..., 38) = 38 <0.000012>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010852>
4174  write(1, "8: buf=0x804a1a0 file=2 ofs=1390"..., 38) = 38 <0.000010>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016941>
4174  write(1, "9: buf=0x804a3a0 file=0 ofs=1100"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016911>
4174  write(1, "10: buf=0x804a5a0 file=2 ofs=600"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014581>
4174  write(1, "11: buf=0x804a7a0 file=4 ofs=292"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011634>
4174  write(1, "12: buf=0x804a9a0 file=5 ofs=617"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014258>
4174  write(1, "13: buf=0x804aba0 file=2 ofs=311"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017924>
4174  write(1, "14: buf=0x804ada0 file=2 ofs=953"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019952>
4174  write(1, "15: buf=0x804afa0 file=5 ofs=495"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.020280>
4174  write(1, "16: buf=0x804b1a0 file=6 ofs=472"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.008797>
4174  write(1, "17: buf=0x804b3a0 file=6 ofs=645"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011669>
4174  write(1, "18: buf=0x804b5a0 file=1 ofs=399"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.027040>
4174  write(1, "19: buf=0x804b7a0 file=3 ofs=439"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.030674>
4174  write(1, "20: buf=0x804b9a0 file=6 ofs=358"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.022351>
4174  write(1, "21: buf=0x804bba0 file=0 ofs=794"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.043008>
4174  write(1, "22: buf=0x804bda0 file=3 ofs=122"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010813>
4174  write(1, "23: buf=0x804bfa0 file=2 ofs=696"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.009879>
4174  write(1, "24: buf=0x804c1a0 file=5 ofs=418"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015228>
4174  write(1, "25: buf=0x804c3a0 file=6 ofs=206"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018988>
4174  write(1, "26: buf=0x804c5a0 file=6 ofs=542"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017638>
4174  write(1, "27: buf=0x804c7a0 file=6 ofs=541"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010141>
4174  write(1, "28: buf=0x804c9a0 file=1 ofs=390"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018382>
4174  write(1, "29: buf=0x804cba0 file=5 ofs=469"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.009963>
4174  write(1, "30: buf=0x804cda0 file=3 ofs=620"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016832>
4174  write(1, "31: buf=0x804cfa0 file=4 ofs=372"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012220>
4174  io_getevents(-1209036800, 1, 32, {...}NULL) = 32 <0.000021>
4174  write(1, "32 events\n", 10)       = 10 <0.000009>
4174  write(1, "0: buf=0x80491a0 file=5 ofs=1633"..., 38) = 38 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017945>
4174  write(1, "1: buf=0x80493a0 file=1 ofs=6286"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013698>
4174  write(1, "2: buf=0x80495a0 file=2 ofs=1064"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019262>
4174  write(1, "3: buf=0x80497a0 file=5 ofs=9344"..., 37) = 37 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016924>
4174  write(1, "4: buf=0x80499a0 file=1 ofs=1851"..., 37) = 37 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000008>
4174  write(1, "5: buf=0x8049ba0 file=4 ofs=7293"..., 38) = 38 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.006936>
4174  write(1, "6: buf=0x8049da0 file=0 ofs=9975"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013369>
4174  write(1, "7: buf=0x8049fa0 file=4 ofs=6900"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016052>
4174  write(1, "8: buf=0x804a1a0 file=0 ofs=1065"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.025321>
4174  write(1, "9: buf=0x804a3a0 file=5 ofs=3633"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018776>
4174  write(1, "10: buf=0x804a5a0 file=1 ofs=178"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000009>
4174  write(1, "11: buf=0x804a7a0 file=6 ofs=475"..., 39) = 39 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016476>
4174  write(1, "12: buf=0x804a9a0 file=1 ofs=226"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000008>
4174  write(1, "13: buf=0x804aba0 file=2 ofs=469"..., 37) = 37 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018931>
4174  write(1, "14: buf=0x804ada0 file=5 ofs=456"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019012>
4174  write(1, "15: buf=0x804afa0 file=1 ofs=958"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000008>
4174  write(1, "16: buf=0x804b1a0 file=0 ofs=539"..., 39) = 39 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015357>
4174  write(1, "17: buf=0x804b3a0 file=6 ofs=713"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012389>
4174  write(1, "18: buf=0x804b5a0 file=3 ofs=806"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.025629>
4174  write(1, "19: buf=0x804b7a0 file=2 ofs=473"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.021885>
4174  write(1, "20: buf=0x804b9a0 file=5 ofs=555"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019097>
4174  write(1, "21: buf=0x804bba0 file=0 ofs=481"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.009729>
4174  write(1, "22: buf=0x804bda0 file=3 ofs=394"..., 37) = 37 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.021353>
4174  write(1, "23: buf=0x804bfa0 file=1 ofs=565"..., 39) = 39 <0.000033>
4174  io_submit(3085930496, 1, {...})   = 1 <0.030086>
4174  write(1, "24: buf=0x804c1a0 file=4 ofs=480"..., 39) = 39 <0.000011>
4174  io_submit(3085930496, 1, {...})   = 1 <0.040515>
4174  write(1, "25: buf=0x804c3a0 file=4 ofs=622"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010536>
4174  write(1, "26: buf=0x804c5a0 file=4 ofs=762"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.007316>
4174  write(1, "27: buf=0x804c7a0 file=3 ofs=227"..., 38) = 38 <0.000010>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019929>
4174  write(1, "28: buf=0x804c9a0 file=0 ofs=345"..., 37) = 37 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000010>
4174  write(1, "29: buf=0x804cba0 file=4 ofs=762"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000238>
4174  write(1, "30: buf=0x804cda0 file=2 ofs=381"..., 39) = 39 <0.000011>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012961>
4174  write(1, "31: buf=0x804cfa0 file=4 ofs=817"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016990>
4174  io_getevents(-1209036800, 1, 32, {...}NULL) = 32 <0.000021>
4174  write(1, "32 events\n", 10)       = 10 <0.000008>
4174  write(1, "0: buf=0x80491a0 file=1 ofs=3588"..., 38) = 38 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017116>
4174  write(1, "1: buf=0x80493a0 file=2 ofs=8354"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.021612>
4174  write(1, "2: buf=0x80495a0 file=6 ofs=4659"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.021212>
4174  write(1, "3: buf=0x80497a0 file=0 ofs=5323"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014144>
4174  write(1, "4: buf=0x80499a0 file=1 ofs=1183"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000009>
4174  write(1, "5: buf=0x8049ba0 file=6 ofs=3389"..., 38) = 38 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015009>
4174  write(1, "6: buf=0x8049da0 file=3 ofs=8806"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017195>
4174  write(1, "7: buf=0x8049fa0 file=3 ofs=1725"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010893>
4174  write(1, "8: buf=0x804a1a0 file=3 ofs=3805"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017010>
4174  write(1, "9: buf=0x804a3a0 file=1 ofs=6581"..., 37) = 37 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.000009>
4174  write(1, "10: buf=0x804a5a0 file=2 ofs=930"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010394>
4174  write(1, "11: buf=0x804a7a0 file=0 ofs=569"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.011390>
4174  write(1, "12: buf=0x804a9a0 file=6 ofs=178"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.021791>
4174  write(1, "13: buf=0x804aba0 file=5 ofs=759"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016456>
4174  write(1, "14: buf=0x804ada0 file=3 ofs=687"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.023779>
4174  write(1, "15: buf=0x804afa0 file=6 ofs=450"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017103>
4174  write(1, "16: buf=0x804b1a0 file=5 ofs=698"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.005784>
4174  write(1, "17: buf=0x804b3a0 file=0 ofs=417"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014404>
4174  write(1, "18: buf=0x804b5a0 file=2 ofs=206"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.018712>
4174  write(1, "19: buf=0x804b7a0 file=5 ofs=511"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014681>
4174  write(1, "20: buf=0x804b9a0 file=5 ofs=339"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012841>
4174  write(1, "21: buf=0x804bba0 file=5 ofs=276"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017433>
4174  write(1, "22: buf=0x804bda0 file=4 ofs=510"..., 39) = 39 <0.000008>
4174  io_submit(3085930496, 1, {...})   = 1 <0.016654>
4174  write(1, "23: buf=0x804bfa0 file=4 ofs=618"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.013487>
4174  write(1, "24: buf=0x804c1a0 file=6 ofs=418"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.021452>
4174  write(1, "25: buf=0x804c3a0 file=6 ofs=384"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.006960>
4174  write(1, "26: buf=0x804c5a0 file=6 ofs=547"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.022954>
4174  write(1, "27: buf=0x804c7a0 file=0 ofs=647"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.019442>
4174  write(1, "28: buf=0x804c9a0 file=4 ofs=415"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.014610>
4174  write(1, "29: buf=0x804cba0 file=3 ofs=423"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.012692>
4174  write(1, "30: buf=0x804cda0 file=0 ofs=721"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017224>
4174  write(1, "31: buf=0x804cfa0 file=5 ofs=527"..., 39) = 39 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.015913>
4174  io_getevents(-1209036800, 1, 32, {...}NULL) = 32 <0.000021>
4174  write(1, "32 events\n", 10)       = 10 <0.000009>
4174  write(1, "0: buf=0x80491a0 file=5 ofs=3304"..., 38) = 38 <0.000007>
4174  io_submit(3085930496, 1, {...})   = 1 <0.009041>
4174  write(1, "1: buf=0x80493a0 file=5 ofs=5696"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.010915>
4174  write(1, "2: buf=0x80495a0 file=1 ofs=4467"..., 38) = 38 <0.000009>
4174  io_submit(3085930496, 1, {...})   = 1 <0.017019>
4174  --- SIGINT (Interrupt) @ 0 (0) ---
4174  +++ killed by SIGINT +++

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