On Wed, 6 Jun 2007, Randy Dunlap wrote:
On Wed, 6 Jun 2007 15:28:43 -0700 Jesse Barnes wrote:
On Wednesday, June 6, 2007 3:26 pm Justin Piszcz wrote:
Nope, I booted with only netconsole= options. I have a lot of HW in
the box and I guess the buffer is too small. Not sure where to
change it in the kernel. Looking..
It's called "kernel log buffer size" and it's in "General setup".
or you can just boot with "log_buf_len=256k" on the kernel boot line (e.g.)
---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
Hm, not sure if it was from the patch or what but I ran this:
1. swapoff -a
2. ./eatmem
The machine responded to ping and alt-sysrq-b but the box remain
unresponsive, I guess the kernel did not kill the process? :(
The moments before it 'froze'
top - 18:48:01 up 15 min, 7 users, load average: 6.61, 18.50, 13.31
Tasks: 200 total, 18 running, 182 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 90.7%sy, 0.0%ni, 5.9%id, 3.3%wa, 0.0%hi, 0.0%si,
0.0%st
Mem: 8039576k total, 7998860k used, 40716k free, 8k buffers
Swap: 0k total, 0k used, 0k free, 1664k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
248 root 11 -5 0 0 0 R 85 0.0 0:16.05 kswapd0
2265 nut 18 0 13320 244 4 R 40 0.0 0:03.13 newhidups
2267 nut 18 0 12216 168 4 R 40 0.0 0:02.04 upsd
2474 ntp 18 0 22192 400 8 R 39 0.0 0:02.00 ntpd
3563 jpiszcz 18 0 41964 1264 4 R 38 0.0 0:02.20 pine
3530 root 18 0 96240 3132 36 R 37 0.0 0:02.09 kdm_greet
2052 root 18 0 6080 112 4 R 37 0.0 0:02.00 hald-addon-stor
4479 war 17 0 18012 700 252 R 33 0.0 0:01.81 top
4480 war 19 0 6948m 6.8g 4 R 22 88.4 0:05.81 eatmem
2095 root 18 0 13128 216 8 R 10 0.0 0:00.50 dirmngr
2545 root 18 0 95788 2488 4 R 5 0.0 0:00.25 apache2
3564 war 18 0 41620 832 4 R 5 0.0 0:00.34 pine
2270 nut 15 0 12212 144 4 S 1 0.0 0:00.05 upsmon
561 root 10 -5 0 0 0 S 0 0.0 0:00.02 xfsbufd
Very simply program:
#include <iostream>
using namespace std;
int main()
{
long int interations = 10000000;
int counter = 1;
for(counter;counter<interations;counter++)
{
double *d = new double[100];
}
return 0;
}
Any idea why the OOM killer can or does not kill it?
Justin.
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