Marcelo,

On Thu, 2004-10-28 at 10:06 -0200, Marcelo Tosatti wrote:
> Can you please test Rik's patch with your spurious OOM kill testcase?

I have similar problems with hackbench on a PIII/Celeron 300MHz, 128MB
RAM. 

Also Rik's patch does not help. I have the impression that it makes
almost no difference whether swap is on or not. With swap on, oom-killer
even kills rpc.mountd when it prints out that 56MB memory are available.

It happens on 2.6.8.1 too. On 2.6.7 I can run hackbench 40 without any
problem.

Full logs are attached.

tglx

Running hackbench 40, with swap on, I get 

oom-killer: gfp_mask=0xd0
Free pages:         356kB (0kB HighMem)
Out of Memory: Killed process 1030 (portmap).

oom-killer: gfp_mask=0xd0
Free pages:        6684kB (0kB HighMem)
Out of Memory: Killed process 1182 (atd).

oom-killer: gfp_mask=0xd0
Free pages:       17076kB (0kB HighMem)
Out of Memory: Killed process 1173 (sshd).

oom-killer: gfp_mask=0xd0
Free pages:       20160kB (0kB HighMem)
Out of Memory: Killed process 1191 (bash).
 - That's the shell on which hackbench was started

oom-killer: gfp_mask=0xd0
Free pages:       56544kB (0kB HighMem)
Out of Memory: Killed process 1149 (rpc.mountd).


Switching swap off, I get 

oom-killer: gfp_mask=0xd0
Free pages:         404kB (0kB HighMem)
Out of Memory: Killed process 1031 (portmap).

oom-killer: gfp_mask=0xd0
Free pages:         356kB (0kB HighMem)
Out of Memory: Killed process 1169 (atd).

oom-killer: gfp_mask=0xd0
Free pages:         792kB (0kB HighMem)
Out of Memory: Killed process 1160 (sshd).

oom-killer: gfp_mask=0xd0
Free pages:        2340kB (0kB HighMem)
Out of Memory: Killed process 1178 (bash).
- That's the shell on which hackbench was started