Hi
We've been seeing some kernel memory leak behaviour in 2.6.20.11. After
running for just over a week, one of our machines was showing almost all
it's memory being used, even though we'd exited all the main services on
the machine. The machine is a newish IBM x3550 with a Xeon 5130 processor
and 12G of RAM. We're using a x86 kernel with PAE rather than x86_64, but
haven't had a problem like this on other machines, though they are 8G and
Prescott based. It's being used for cyrus IMAP serving and has about 35
reiserfs volumes mounted on it. The result after a week is that memory looks
like this.
[root@imap10 ~]$ free
total used free shared buffers cached
Mem: 12466708 11690804 775904 0 560060 714292
-/+ buffers/cache: 10416452 2050256
Swap: 2048276 49952 1998324
But a complete process list only shows.
[root@imap10 ~]$ ps auxw
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 1948 640 ? Ss Jul17 0:01 init [2]
root 2 0.0 0.0 0 0 ? S Jul17 0:03 [migration/0]
root 3 0.0 0.0 0 0 ? SN Jul17 0:00 [ksoftirqd/0]
root 4 0.0 0.0 0 0 ? S Jul17 0:00 [watchdog/0]
root 5 0.0 0.0 0 0 ? S Jul17 0:01 [migration/1]
root 6 0.0 0.0 0 0 ? SN Jul17 0:00 [ksoftirqd/1]
root 7 0.0 0.0 0 0 ? S Jul17 0:00 [watchdog/1]
root 8 0.0 0.0 0 0 ? S< Jul17 0:00 [events/0]
root 9 0.0 0.0 0 0 ? S< Jul17 0:00 [events/1]
root 10 0.0 0.0 0 0 ? S< Jul17 0:00 [khelper]
root 11 0.0 0.0 0 0 ? S< Jul17 0:00 [kthread]
root 117 0.0 0.0 0 0 ? S< Jul17 0:00 [kblockd/0]
root 118 0.0 0.0 0 0 ? S< Jul17 0:00 [kblockd/1]
root 119 0.0 0.0 0 0 ? S< Jul17 0:00 [kacpid]
root 228 0.0 0.0 0 0 ? S< Jul17 0:00 [ata/0]
root 229 0.0 0.0 0 0 ? S< Jul17 0:00 [ata/1]
root 230 0.0 0.0 0 0 ? S< Jul17 0:00 [ata_aux]
root 231 0.0 0.0 0 0 ? S< Jul17 0:00 [kseriod]
root 261 0.0 0.0 0 0 ? S< Jul17 6:26 [kswapd0]
root 262 0.0 0.0 0 0 ? S< Jul17 0:00 [aio/0]
root 263 0.0 0.0 0 0 ? S< Jul17 0:00 [aio/1]
root 913 0.0 0.0 0 0 ? S< Jul17 0:00 [scsi_eh_0]
root 914 0.0 0.0 0 0 ? S< Jul17 0:00 [aacraid]
root 937 0.0 0.0 0 0 ? S< Jul17 0:00 [scsi_eh_1]
root 1035 0.0 0.0 0 0 ? S< Jul17 0:00 [scsi_eh_2]
root 1131 0.0 0.0 0 0 ? S< Jul17 0:00 [kpsmoused]
root 1134 0.0 0.0 0 0 ? S Jul17 0:00 [kirqd]
root 2326 0.0 0.0 0 0 ? S< Jul17 0:00 [ksuspend_usbd]
root 2329 0.0 0.0 0 0 ? S< Jul17 0:00 [khubd]
root 2686 0.0 0.0 0 0 ? S< Jul17 0:03 [kjournald]
root 2864 0.0 0.0 2180 612 ? S<s Jul17 0:00 udevd --daemon
root 4573 0.0 0.0 0 0 ? S< Jul17 0:54 [reiserfs/0]
root 4574 0.0 0.0 0 0 ? S< Jul17 0:46 [reiserfs/1]
daemon 5023 0.0 0.0 1684 364 ? Ss Jul17 0:00 /sbin/portmap
root 5140 0.0 0.0 1628 628 ? Ss Jul17 4:49 /sbin/syslogd
root 5146 0.0 0.0 1580 396 ? Ss Jul17 0:00 /sbin/klogd -x
111 5168 0.0 0.0 2248 816 ? Ss Jul17 0:00 /usr/bin/dbus-daemon --system
112 5176 0.0 0.0 10432 8868 ? Ss Jul17 0:00 /usr/sbin/hald
root 5177 0.0 0.0 2888 1036 ? S Jul17 0:00 hald-runner
112 5183 0.0 0.0 2020 844 ? S Jul17 0:00 hald-addon-acpi: listening on acpi kernel interface /proc/acpi/event
root 5215 0.0 0.0 1812 624 ? S Jul17 0:00 hald-addon-storage: polling /dev/sda
root 5221 0.0 0.0 1812 620 ? S Jul17 0:08 hald-addon-storage: polling /dev/hda
root 5229 0.0 0.0 1572 384 ? Ss Jul17 0:00 /usr/sbin/irqbalance
root 5244 0.0 0.0 4928 1112 ? Ss Jul17 0:00 /usr/sbin/sshd
statd 5280 0.0 0.0 1760 728 ? Ss Jul17 0:00 /sbin/rpc.statd
ntp 5293 0.0 0.0 4028 1220 ? Ss Jul17 0:00 /usr/sbin/ntpd -p /var/run/ntpd.pid -u 110:109 -g
root 5362 0.0 0.0 6692 4948 ? Ss Jul17 0:02 /usr/sbin/munin-node
root 5402 0.0 0.0 1576 496 tty1 Ss+ Jul17 0:00 /sbin/getty 38400 tty1
root 5404 0.0 0.0 1576 496 tty2 Ss+ Jul17 0:00 /sbin/getty 38400 tty2
root 5405 0.0 0.0 1576 496 tty3 Ss+ Jul17 0:00 /sbin/getty 38400 tty3
root 5406 0.0 0.0 1572 492 tty4 Ss+ Jul17 0:00 /sbin/getty 38400 tty4
root 5408 0.0 0.0 1576 496 tty5 Ss+ Jul17 0:00 /sbin/getty 38400 tty5
root 5410 0.0 0.0 1572 492 tty6 Ss+ Jul17 0:00 /sbin/getty 38400 tty6
root 5411 0.0 0.0 2640 1272 ? Ss Jul17 0:00 /bin/sh /command/svscanboot
root 5436 0.0 0.0 1596 356 ? S Jul17 0:00 svscan /service
root 5438 0.0 0.0 1420 248 ? S Jul17 0:00 readproctitle service errors: .....................................................................
root 5449 0.0 0.0 1432 300 ? S Jul17 0:00 supervise dnscache
root 5450 0.0 0.0 1432 304 ? S Jul17 0:00 supervise log
dnslog 5456 0.0 0.0 1576 368 ? S Jul17 0:07 multilog t ./main
root 6189 0.0 0.0 1432 304 ? S Jul17 0:00 supervise backupcyrusd
root 6223 0.0 0.0 1428 300 ? S Jul17 0:00 supervise popschedule
root 6243 0.0 0.0 1428 300 ? S Jul17 0:00 supervise postfixpolicyproxy
root 6252 0.0 0.0 1432 304 ? S Jul17 0:00 supervise rated
root 6288 0.0 0.0 1428 300 ? S Jul17 0:00 supervise vfsd
root 6323 0.0 0.0 1428 300 ? S Jul17 0:00 supervise vfsproxy
root 6407 0.0 0.0 1428 300 ? S Jul17 0:00 supervise notifyd
root 13463 0.0 0.0 2224 896 pts/3 R+ 02:40 0:00 ps auxw
root 26582 0.0 0.0 7484 2148 ? Ss 02:31 0:00 sshd: root@pts/0
root 26586 0.0 0.0 2840 1688 pts/0 Ss+ 02:31 0:00 -bash
root 29155 0.0 0.0 0 0 ? S Jul25 0:18 [pdflush]
root 29700 0.0 0.0 7640 2164 ? Ss 02:32 0:00 sshd: root@pts/1
root 29704 0.0 0.0 2840 1692 pts/1 Ss+ 02:32 0:00 -bash
root 30012 0.0 0.0 7488 2152 ? Ss 02:32 0:00 sshd: root@pts/3
root 30016 0.0 0.0 2836 1656 pts/3 Ss 02:32 0:00 -bash
root 30402 0.1 0.0 0 0 ? S Jul25 1:15 [pdflush]
This is pretty much a vanilla kernel, with just one patch to work around
a deadlock problem in the reiserfs_file_write code that I think isn't
fixed.
http://lists.linuxcoding.com/kernel/2006-q1/msg32508.html
The patch basically bypasses all the code to use do_sync_write. We haven't
noticed it as a performance issue. I haven't tested if the deadlock
problem has been fixed since 2.6.16, but with this patch there definitely
isn't a problem, so we haven't been particularly keen to find out.
--- linux-2.6.19.2/fs/reiserfs/file.c 2006-11-29 16:57:37.000000000 -0500
+++ linux-2.6.19.2-syncwrite/fs/reiserfs/file.c 2007-02-02 01:01:36.000000000 -0500
@@ -1358,6 +1358,8 @@
if (file->f_flags & O_DIRECT)
return do_sync_write(file, buf, count, ppos);
+ return do_sync_write(file, buf, count, ppos);
+
if (unlikely((ssize_t) count < 0))
return -EINVAL;
One other thing that is probably relevant, is that we saw some of these
error messages in the dmesg log.
BUG: at fs/reiserfs/inode.c:2868 reiserfs_releasepage()
[<c0199ecb>] reiserfs_releasepage+0xa3/0xa8
[<c0199e28>] reiserfs_releasepage+0x0/0xa8
[<c013c8e9>] try_to_release_page+0x2c/0x40
[<c0141386>] pagevec_strip+0x52/0x54
[<c0141fa0>] shrink_active_list+0x2c0/0x3d1
[<c0142b33>] shrink_zone+0xd8/0xf5
[<c014307c>] kswapd+0x322/0x423
[<c012b4e4>] autoremove_wake_function+0x0/0x37
[<c0142d5a>] kswapd+0x0/0x423
[<c012b362>] kthread+0xae/0xd3
[<c012b2b4>] kthread+0x0/0xd3
[<c010383b>] kernel_thread_helper+0x7/0x1c
=======================
[root@imap10 proc]$ dmesg | grep fs/reiserfs/inode.c | wc -l
38
All of them show basically the same trace as above.
There's a dump of the kernel config available here:
http://robm.fastmail.fm/kernel/2007-07-26/config.txt
Here's a dump of just about everything from /proc that I thought might be useful
[root@imap10 ~]$ cat /proc/meminfo
MemTotal: 12466708 kB
MemFree: 739752 kB
Buffers: 560436 kB
Cached: 754096 kB
SwapCached: 4540 kB
Active: 9878988 kB
Inactive: 1594924 kB
HighTotal: 11663148 kB
HighFree: 725192 kB
LowTotal: 803560 kB
LowFree: 14560 kB
SwapTotal: 2048276 kB
SwapFree: 1998324 kB
Dirty: 130036 kB
Writeback: 0 kB
AnonPages: 12828 kB
Mapped: 4396 kB
Slab: 223012 kB
SReclaimable: 192724 kB
SUnreclaim: 30288 kB
PageTables: 636 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 8281628 kB
Committed_AS: 79208 kB
VmallocTotal: 118776 kB
VmallocUsed: 24536 kB
VmallocChunk: 93532 kB
[root@imap10 ~]$ cat /proc/slabinfo
slabinfo - version: 2.1
# name <active_objs> <num_objs> <objsize> <objperslab> <pagesperslab> : tunables <limit> <batchcount> <sharedfactor> : slabdata <active_slabs> <num_slabs> <sharedavail>
ip_fib_alias 8 113 32 113 1 : tunables 120 60 8 : slabdata 1 1 0
ip_fib_hash 8 113 32 113 1 : tunables 120 60 8 : slabdata 1 1 0
jbd_4k 0 0 4096 1 1 : tunables 24 12 8 : slabdata 0 0 0
uhci_urb_priv 0 0 28 127 1 : tunables 120 60 8 : slabdata 0 0 0
rpc_buffers 8 8 2048 2 1 : tunables 24 12 8 : slabdata 4 4 0
rpc_tasks 8 20 192 20 1 : tunables 120 60 8 : slabdata 1 1 0
rpc_inode_cache 0 0 448 9 1 : tunables 54 27 8 : slabdata 0 0 0
UNIX 20 36 448 9 1 : tunables 54 27 8 : slabdata 4 4 0
ip_conntrack_expect 0 0 96 40 1 : tunables 120 60 8 : slabdata 0 0 0
ip_conntrack 65 684 212 18 1 : tunables 120 60 8 : slabdata 38 38 0
xt_hashlimit 0 0 64 59 1 : tunables 120 60 8 : slabdata 0 0 0
flow_cache 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
aic94xx_ascb 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
aic94xx_dma_token 0 0 16 203 1 : tunables 120 60 8 : slabdata 0 0 0
scsi_cmd_cache 45 96 320 12 1 : tunables 54 27 8 : slabdata 8 8 6
sas_task 0 0 320 12 1 : tunables 54 27 8 : slabdata 0 0 0
cfq_ioc_pool 0 0 92 42 1 : tunables 120 60 8 : slabdata 0 0 0
cfq_pool 0 0 96 40 1 : tunables 120 60 8 : slabdata 0 0 0
mqueue_inode_cache 1 7 576 7 1 : tunables 54 27 8 : slabdata 1 1 0
udf_inode_cache 0 0 400 10 1 : tunables 54 27 8 : slabdata 0 0 0
nfs_write_data 36 36 448 9 1 : tunables 54 27 8 : slabdata 4 4 0
nfs_read_data 32 36 448 9 1 : tunables 54 27 8 : slabdata 4 4 0
nfs_inode_cache 0 0 604 6 1 : tunables 54 27 8 : slabdata 0 0 0
nfs_page 0 0 64 59 1 : tunables 120 60 8 : slabdata 0 0 0
isofs_inode_cache 0 0 372 10 1 : tunables 54 27 8 : slabdata 0 0 0
ext2_inode_cache 0 0 472 8 1 : tunables 54 27 8 : slabdata 0 0 0
ext2_xattr 0 0 48 78 1 : tunables 120 60 8 : slabdata 0 0 0
journal_handle 3 169 20 169 1 : tunables 120 60 8 : slabdata 1 1 0
journal_head 323 720 52 72 1 : tunables 120 60 8 : slabdata 9 10 228
revoke_table 2 254 12 254 1 : tunables 120 60 8 : slabdata 1 1 0
revoke_record 0 203 16 203 1 : tunables 120 60 8 : slabdata 0 1 0
ext3_inode_cache 1127 1296 500 8 1 : tunables 54 27 8 : slabdata 162 162 0
ext3_xattr 0 0 48 78 1 : tunables 120 60 8 : slabdata 0 0 0
reiser_inode_cache 21496 40833 428 9 1 : tunables 54 27 8 : slabdata 4537 4537 0
dnotify_cache 1 169 20 169 1 : tunables 120 60 8 : slabdata 1 1 0
eventpoll_pwq 0 0 36 101 1 : tunables 120 60 8 : slabdata 0 0 0
eventpoll_epi 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
inotify_event_cache 0 0 28 127 1 : tunables 120 60 8 : slabdata 0 0 0
inotify_watch_cache 1 92 40 92 1 : tunables 120 60 8 : slabdata 1 1 0
kioctx 0 0 192 20 1 : tunables 120 60 8 : slabdata 0 0 0
kiocb 0 0 192 20 1 : tunables 120 60 8 : slabdata 0 0 0
fasync_cache 0 0 16 203 1 : tunables 120 60 8 : slabdata 0 0 0
shmem_inode_cache 1587 1701 440 9 1 : tunables 54 27 8 : slabdata 189 189 0
posix_timers_cache 0 0 88 44 1 : tunables 120 60 8 : slabdata 0 0 0
uid_cache 5 59 64 59 1 : tunables 120 60 8 : slabdata 1 1 0
ip_mrt_cache 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
UDP-Lite 0 0 512 7 1 : tunables 54 27 8 : slabdata 0 0 0
tcp_bind_bucket 11 203 16 203 1 : tunables 120 60 8 : slabdata 1 1 0
inet_peer_cache 0 0 64 59 1 : tunables 120 60 8 : slabdata 0 0 0
secpath_cache 0 0 32 113 1 : tunables 120 60 8 : slabdata 0 0 0
xfrm_dst_cache 0 0 320 12 1 : tunables 54 27 8 : slabdata 0 0 0
ip_dst_cache 33 90 256 15 1 : tunables 120 60 8 : slabdata 6 6 0
arp_cache 7 80 192 20 1 : tunables 120 60 8 : slabdata 4 4 0
RAW 3 7 512 7 1 : tunables 54 27 8 : slabdata 1 1 0
UDP 3 7 512 7 1 : tunables 54 27 8 : slabdata 1 1 0
tw_sock_TCP 8 30 128 30 1 : tunables 120 60 8 : slabdata 1 1 0
request_sock_TCP 0 0 64 59 1 : tunables 120 60 8 : slabdata 0 0 0
TCP 6 28 1152 7 2 : tunables 24 12 8 : slabdata 4 4 0
sgpool-128 32 33 2560 3 2 : tunables 24 12 8 : slabdata 11 11 0
sgpool-64 34 42 1280 3 1 : tunables 24 12 8 : slabdata 13 14 1
sgpool-32 32 36 640 6 1 : tunables 54 27 8 : slabdata 6 6 0
sgpool-16 33 36 320 12 1 : tunables 54 27 8 : slabdata 3 3 0
sgpool-8 38 80 192 20 1 : tunables 120 60 8 : slabdata 4 4 0
scsi_io_context 0 0 104 37 1 : tunables 120 60 8 : slabdata 0 0 0
blkdev_ioc 6 127 28 127 1 : tunables 120 60 8 : slabdata 1 1 0
blkdev_queue 18 20 952 4 1 : tunables 54 27 8 : slabdata 5 5 0
blkdev_requests 153 294 184 21 1 : tunables 120 60 8 : slabdata 14 14 0
biovec-256 7 8 3072 2 2 : tunables 24 12 8 : slabdata 4 4 0
biovec-128 7 10 1536 5 2 : tunables 24 12 8 : slabdata 2 2 0
biovec-64 8 15 768 5 1 : tunables 54 27 8 : slabdata 3 3 0
biovec-16 8 20 192 20 1 : tunables 120 60 8 : slabdata 1 1 0
biovec-4 9 59 64 59 1 : tunables 120 60 8 : slabdata 1 1 0
biovec-1 305 1015 16 203 1 : tunables 120 60 8 : slabdata 5 5 228
bio 544 780 128 30 1 : tunables 120 60 8 : slabdata 24 26 228
sock_inode_cache 40 80 384 10 1 : tunables 54 27 8 : slabdata 8 8 0
skbuff_fclone_cache 2 24 320 12 1 : tunables 54 27 8 : slabdata 2 2 0
skbuff_head_cache 338 1100 192 20 1 : tunables 120 60 8 : slabdata 55 55 0
file_lock_cache 15 80 96 40 1 : tunables 120 60 8 : slabdata 2 2 0
Acpi-Operand 873 1012 40 92 1 : tunables 120 60 8 : slabdata 11 11 0
Acpi-ParseExt 0 0 44 84 1 : tunables 120 60 8 : slabdata 0 0 0
Acpi-Parse 0 0 28 127 1 : tunables 120 60 8 : slabdata 0 0 0
Acpi-State 0 0 44 84 1 : tunables 120 60 8 : slabdata 0 0 0
Acpi-Namespace 275 338 20 169 1 : tunables 120 60 8 : slabdata 2 2 0
proc_inode_cache 410 1133 360 11 1 : tunables 54 27 8 : slabdata 103 103 0
sigqueue 2 27 144 27 1 : tunables 120 60 8 : slabdata 1 1 0
radix_tree_node 31584 49751 288 13 1 : tunables 54 27 8 : slabdata 3827 3827 0
bdev_cache 47 63 512 7 1 : tunables 54 27 8 : slabdata 9 9 0
sysfs_dir_cache 7146 7224 44 84 1 : tunables 120 60 8 : slabdata 86 86 0
mnt_cache 55 60 128 30 1 : tunables 120 60 8 : slabdata 2 2 0
inode_cache 1976 2145 344 11 1 : tunables 54 27 8 : slabdata 195 195 0
dentry_cache 21496 52925 132 29 1 : tunables 120 60 8 : slabdata 1825 1825 0
filp 578 3460 192 20 1 : tunables 120 60 8 : slabdata 173 173 7
names_cache 13 18 4096 1 1 : tunables 24 12 8 : slabdata 13 18 0
idr_layer_cache 123 145 136 29 1 : tunables 120 60 8 : slabdata 5 5 0
buffer_head 2744886 2769914 56 67 1 : tunables 120 60 8 : slabdata 41342 41342 0
mm_struct 57 135 448 9 1 : tunables 54 27 8 : slabdata 15 15 0
vm_area_struct 962 7832 88 44 1 : tunables 120 60 8 : slabdata 178 178 0
fs_cache 57 354 64 59 1 : tunables 120 60 8 : slabdata 6 6 0
files_cache 57 190 384 10 1 : tunables 54 27 8 : slabdata 19 19 0
signal_cache 91 210 384 10 1 : tunables 54 27 8 : slabdata 21 21 0
sighand_cache 85 111 1344 3 1 : tunables 24 12 8 : slabdata 37 37 0
task_struct 87 135 1312 3 1 : tunables 24 12 8 : slabdata 45 45 0
anon_vma 568 11430 12 254 1 : tunables 120 60 8 : slabdata 45 45 0
pgd 43 678 32 113 1 : tunables 120 60 8 : slabdata 6 6 0
pmd 136 140 4096 1 1 : tunables 24 12 8 : slabdata 136 140 0
pid 91 808 36 101 1 : tunables 120 60 8 : slabdata 8 8 0
size-131072(DMA) 0 0 131072 1 32 : tunables 8 4 0 : slabdata 0 0 0
size-131072 0 0 131072 1 32 : tunables 8 4 0 : slabdata 0 0 0
size-65536(DMA) 0 0 65536 1 16 : tunables 8 4 0 : slabdata 0 0 0
size-65536 5 5 65536 1 16 : tunables 8 4 0 : slabdata 5 5 0
size-32768(DMA) 0 0 32768 1 8 : tunables 8 4 0 : slabdata 0 0 0
size-32768 0 0 32768 1 8 : tunables 8 4 0 : slabdata 0 0 0
size-16384(DMA) 0 0 16384 1 4 : tunables 8 4 0 : slabdata 0 0 0
size-16384 2 2 16384 1 4 : tunables 8 4 0 : slabdata 2 2 0
size-8192(DMA) 0 0 8192 1 2 : tunables 8 4 0 : slabdata 0 0 0
size-8192 82 82 8192 1 2 : tunables 8 4 0 : slabdata 82 82 0
size-4096(DMA) 0 0 4096 1 1 : tunables 24 12 8 : slabdata 0 0 0
size-4096 861 861 4096 1 1 : tunables 24 12 8 : slabdata 861 861 0
size-2048(DMA) 0 0 2048 2 1 : tunables 24 12 8 : slabdata 0 0 0
size-2048 385 490 2048 2 1 : tunables 24 12 8 : slabdata 245 245 0
size-1024(DMA) 0 0 1024 4 1 : tunables 54 27 8 : slabdata 0 0 0
size-1024 231 252 1024 4 1 : tunables 54 27 8 : slabdata 63 63 0
size-512(DMA) 0 0 512 8 1 : tunables 54 27 8 : slabdata 0 0 0
size-512 974 1072 512 8 1 : tunables 54 27 8 : slabdata 134 134 0
size-256(DMA) 0 0 256 15 1 : tunables 120 60 8 : slabdata 0 0 0
size-256 312 390 256 15 1 : tunables 120 60 8 : slabdata 26 26 0
size-128(DMA) 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
size-128 9025 19890 128 30 1 : tunables 120 60 8 : slabdata 663 663 0
size-64(DMA) 0 0 64 59 1 : tunables 120 60 8 : slabdata 0 0 0
size-32(DMA) 0 0 32 113 1 : tunables 120 60 8 : slabdata 0 0 0
size-64 2326 3776 64 59 1 : tunables 120 60 8 : slabdata 64 64 0
size-32 6302 10509 32 113 1 : tunables 120 60 8 : slabdata 93 93 0
kmem_cache 132 150 128 30 1 : tunables 120 60 8 : slabdata 5 5 0
[root@imap10 proc]$ cat cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU 5130 @ 2.00GHz
stepping : 6
cpu MHz : 2000.233
cache size : 4096 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl vmx tm2 ssse3 cx16 xtpr dca lahf_lm
bogomips : 4002.50
clflush size : 64
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU 5130 @ 2.00GHz
stepping : 6
cpu MHz : 2000.233
cache size : 4096 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl vmx tm2 ssse3 cx16 xtpr dca lahf_lm
bogomips : 4000.20
clflush size : 64
[root@imap10 proc]$ cat buddyinfo
Node 0, zone DMA 56 7 4 1 0 1 1 0 1 1 0
Node 0, zone Normal 1336 256 49 10 1 1 0 0 0 1 0
Node 0, zone HighMem 99524 12603 1252 537 330 190 109 48 25 9 11
[root@imap10 proc]$ cat modules
i2c_i801 10124 0 - Live 0xf8836000
i2c_core 19584 1 i2c_i801, Live 0xf8863000
ehci_hcd 27276 0 - Live 0xf885b000
uhci_hcd 21136 0 - Live 0xf8854000
usbcore 108680 3 ehci_hcd,uhci_hcd, Live 0xf88d1000
[root@imap10 proc]$ cat zoneinfo
Node 0, zone DMA
pages free 958
min 17
low 21
high 25
active 61
inactive 273
scanned 0 (a: 15 i: 11)
spanned 4096
present 4064
nr_anon_pages 0
nr_mapped 1
nr_file_pages 334
nr_slab_reclaimable 1086
nr_slab_unreclaimable 87
nr_page_table_pages 0
nr_dirty 31
nr_writeback 0
nr_unstable 0
nr_bounce 0
nr_vmscan_write 602820
protection: (0, 873, 13192)
pagesets
all_unreclaimable: 0
prev_priority: 12
start_pfn: 0
Node 0, zone Normal
pages free 2696
min 936
low 1170
high 1404
active 94885
inactive 44918
scanned 0 (a: 0 i: 0)
spanned 225280
present 223520
nr_anon_pages 0
nr_mapped 0
nr_file_pages 139803
nr_slab_reclaimable 47095
nr_slab_unreclaimable 7339
nr_page_table_pages 0
nr_dirty 14349
nr_writeback 0
nr_unstable 0
nr_bounce 0
nr_vmscan_write 13211869
protection: (0, 0, 98552)
pagesets
cpu: 0 pcp: 0
count: 144
high: 186
batch: 31
cpu: 0 pcp: 1
count: 47
high: 62
batch: 15
vm stats threshold: 16
cpu: 1 pcp: 0
count: 150
high: 186
batch: 31
cpu: 1 pcp: 1
count: 60
high: 62
batch: 15
vm stats threshold: 16
all_unreclaimable: 0
prev_priority: 12
start_pfn: 4096
Node 0, zone HighMem
pages free 180803
min 128
low 3432
high 6737
active 2380717
inactive 348144
scanned 0 (a: 0 i: 0)
spanned 3178496
present 3153664
nr_anon_pages 3210
nr_mapped 1080
nr_file_pages 190150
nr_slab_reclaimable 0
nr_slab_unreclaimable 0
nr_page_table_pages 151
nr_dirty 6
nr_writeback 0
nr_unstable 0
nr_bounce 0
nr_vmscan_write 107132
protection: (0, 0, 0)
pagesets
cpu: 0 pcp: 0
count: 114
high: 186
batch: 31
cpu: 0 pcp: 1
count: 6
high: 62
batch: 15
vm stats threshold: 32
cpu: 1 pcp: 0
count: 113
high: 186
batch: 31
cpu: 1 pcp: 1
count: 3
high: 62
batch: 15
vm stats threshold: 32
all_unreclaimable: 0
prev_priority: 12
start_pfn: 229376
[root@imap10 proc]$ cat vmstat
nr_anon_pages 3210
nr_mapped 1081
nr_file_pages 330287
nr_slab_reclaimable 48181
nr_slab_unreclaimable 7424
nr_page_table_pages 151
nr_dirty 14386
nr_writeback 0
nr_unstable 0
nr_bounce 0
nr_vmscan_write 13921821
pgpgin 917158683
pgpgout 290273636
pswpin 1761
pswpout 52912
pgalloc_dma 5981840
pgalloc_normal 349519350
pgalloc_high 1144800149
pgfree 1500486435
pgactivate 326397897
pgdeactivate 185125484
pgfault 2978836583
pgmajfault 19685544
pgrefill_dma 3247880
pgrefill_normal 148534853
pgrefill_high 34856904
pgsteal_dma 2619431
pgsteal_normal 164677731
pgsteal_high 7200844
pgscan_kswapd_dma 4957748
pgscan_kswapd_normal 196582656
pgscan_kswapd_high 7473632
pgscan_direct_dma 14745
pgscan_direct_normal 644320
pgscan_direct_high 0
pginodesteal 39523
slabs_scanned 172962176
kswapd_steal 174009805
kswapd_inodesteal 296683999
pageoutrun 3316600
allocstall 7437
pgrotated 1675389
I tried doing a block_dump and a swapoff to see if it made any difference as well:
[root@imap10 vm]$ free
total used free shared buffers cached
Mem: 12466708 11728876 737832 0 560548 756064
-/+ buffers/cache: 10412264 2054444
Swap: 2048276 49952 1998324
[root@imap10 vm]$ echo 1 > block_dump
[root@imap10 vm]$ free
total used free shared buffers cached
Mem: 12466708 11728876 737832 0 560548 756064
-/+ buffers/cache: 10412264 2054444
Swap: 2048276 49952 1998324
[root@imap10 vm]$ swapoff -a
[root@imap10 vm]$ free
total used free shared buffers cached
Mem: 12466708 11774016 692692 0 560572 806912
-/+ buffers/cache: 10406532 2060176
Swap: 0 0 0
After reboot
[root@imap10 ~]$ free
total used free shared buffers cached
Mem: 12466708 180848 12285860 0 8464 16648
-/+ buffers/cache: 155736 12310972
Swap: 2048276 0 2048276
[root@imap10 ~]$ ps auxw
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.3 0.0 1944 636 ? Ss 02:51 0:01 init [2]
root 2 0.0 0.0 0 0 ? S 02:51 0:00 [migration/0]
root 3 0.0 0.0 0 0 ? SN 02:51 0:00 [ksoftirqd/0]
root 4 0.0 0.0 0 0 ? S 02:51 0:00 [watchdog/0]
root 5 0.0 0.0 0 0 ? S 02:51 0:00 [migration/1]
root 6 0.0 0.0 0 0 ? SN 02:51 0:00 [ksoftirqd/1]
root 7 0.0 0.0 0 0 ? S 02:51 0:00 [watchdog/1]
root 8 0.0 0.0 0 0 ? S< 02:51 0:00 [events/0]
root 9 0.0 0.0 0 0 ? S< 02:51 0:00 [events/1]
root 10 0.0 0.0 0 0 ? S< 02:51 0:00 [khelper]
root 11 0.0 0.0 0 0 ? S< 02:51 0:00 [kthread]
root 117 0.0 0.0 0 0 ? S< 02:51 0:00 [kblockd/0]
root 118 0.0 0.0 0 0 ? S< 02:51 0:00 [kblockd/1]
root 119 0.0 0.0 0 0 ? S< 02:51 0:00 [kacpid]
root 228 0.0 0.0 0 0 ? S< 02:51 0:00 [ata/0]
root 229 0.0 0.0 0 0 ? S< 02:51 0:00 [ata/1]
root 230 0.0 0.0 0 0 ? S< 02:51 0:00 [ata_aux]
root 231 0.0 0.0 0 0 ? S< 02:51 0:00 [kseriod]
root 259 0.0 0.0 0 0 ? S 02:51 0:00 [pdflush]
root 260 0.0 0.0 0 0 ? S 02:51 0:00 [pdflush]
root 261 0.0 0.0 0 0 ? S< 02:51 0:00 [kswapd0]
root 262 0.0 0.0 0 0 ? S< 02:51 0:00 [aio/0]
root 263 0.0 0.0 0 0 ? S< 02:51 0:00 [aio/1]
root 913 0.0 0.0 0 0 ? S< 02:52 0:00 [scsi_eh_0]
root 914 0.0 0.0 0 0 ? S< 02:52 0:00 [aacraid]
root 937 0.0 0.0 0 0 ? S< 02:52 0:00 [scsi_eh_1]
root 1035 0.0 0.0 0 0 ? S< 02:52 0:00 [scsi_eh_2]
root 1147 0.0 0.0 0 0 ? S< 02:52 0:00 [kpsmoused]
root 1150 0.0 0.0 0 0 ? S 02:52 0:00 [kirqd]
root 2377 0.0 0.0 0 0 ? S< 02:52 0:00 [ksuspend_usbd]
root 2378 0.0 0.0 0 0 ? S< 02:52 0:00 [khubd]
root 2828 0.0 0.0 0 0 ? S< 02:52 0:00 [kjournald]
root 3006 0.0 0.0 2184 620 ? S<s 02:52 0:00 udevd --daemon
root 5385 0.0 0.0 0 0 ? S< 02:55 0:00 [reiserfs/0]
root 5386 0.0 0.0 0 0 ? S< 02:55 0:00 [reiserfs/1]
daemon 5644 0.0 0.0 1684 364 ? Ss 02:55 0:00 /sbin/portmap
root 5762 0.0 0.0 1628 612 ? Ss 02:55 0:00 /sbin/syslogd
root 5768 0.0 0.0 1576 380 ? Ss 02:55 0:00 /sbin/klogd -x
111 5790 0.0 0.0 2252 812 ? Ss 02:55 0:00 /usr/bin/dbus-daemon --system
112 5798 1.7 0.0 10596 8988 ? Ss 02:56 0:00 /usr/sbin/hald
root 5799 0.0 0.0 2892 1036 ? S 02:56 0:00 hald-runner
112 5805 0.0 0.0 2016 840 ? S 02:56 0:00 hald-addon-acpi: listening on acpi kernel interface /proc/acpi/event
root 5853 0.0 0.0 1808 624 ? S 02:56 0:00 hald-addon-storage: polling /dev/sda
root 5859 0.0 0.0 1808 620 ? S 02:56 0:00 hald-addon-storage: polling /dev/hda
root 5867 0.0 0.0 1572 384 ? Ss 02:56 0:00 /usr/sbin/irqbalance
root 5882 0.0 0.0 4928 1112 ? Ss 02:56 0:00 /usr/sbin/sshd
statd 5918 0.0 0.0 1756 724 ? Ss 02:56 0:00 /sbin/rpc.statd
ntp 5931 0.0 0.0 4024 1204 ? Ss 02:56 0:00 /usr/sbin/ntpd -p /var/run/ntpd.pid -u 110:109 -g
root 6000 0.0 0.0 6696 4956 ? Ss 02:56 0:00 /usr/sbin/munin-node
root 6043 0.0 0.0 1576 496 tty1 Ss+ 02:56 0:00 /sbin/getty 38400 tty1
root 6045 0.0 0.0 1576 492 tty2 Ss+ 02:56 0:00 /sbin/getty 38400 tty2
root 6046 0.0 0.0 1576 496 tty3 Ss+ 02:56 0:00 /sbin/getty 38400 tty3
root 6048 0.0 0.0 1576 496 tty4 Ss+ 02:56 0:00 /sbin/getty 38400 tty4
root 6049 0.0 0.0 1576 496 tty5 Ss+ 02:56 0:00 /sbin/getty 38400 tty5
root 6051 0.0 0.0 1576 496 tty6 Ss+ 02:56 0:00 /sbin/getty 38400 tty6
root 6052 0.0 0.0 2644 1276 ? Ss 02:56 0:00 /bin/sh /command/svscanboot
root 6079 0.0 0.0 1596 352 ? S 02:56 0:00 svscan /service
root 6080 0.0 0.0 1424 248 ? S 02:56 0:00 readproctitle service errors: .....................................................................
root 6088 0.0 0.0 1428 296 ? S 02:56 0:00 supervise dnscache
root 6089 0.0 0.0 1428 296 ? S 02:56 0:00 supervise log
dnscache 6091 0.3 0.7 99552 98248 ? S 02:56 0:00 /usr/bin/dnscache
dnslog 6092 0.0 0.0 1440 292 ? S 02:56 0:00 multilog t ./main
root 6351 0.0 0.0 7488 2152 ? Ss 02:56 0:00 sshd: root@pts/0
root 6355 0.0 0.0 2828 1640 pts/0 Ss+ 02:56 0:00 -bash
root 6363 0.0 0.0 7488 2148 ? Ss 02:56 0:00 sshd: root@pts/1
root 6367 0.0 0.0 2832 1644 pts/1 Ss 02:56 0:00 -bash
root 6383 0.0 0.0 2220 892 pts/1 R+ 02:56 0:00 ps auxw
Any help appreciated.
Rob
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