lkml.org 
[lkml]   [2005]   [Mar]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [Ext2-devel] Re: OOM problems on 2.6.12-rc1 with many fsx tests
Mingming Cao wrote:

> On Sat, 2005-03-26 at 16:23 -0800, Mingming Cao wrote:
>
>>On Fri, 2005-03-25 at 14:11 -0800, Badari Pulavarty wrote:
>>
>>>On Fri, 2005-03-25 at 13:56, Andrew Morton wrote:
>>>
>>>>Mingming Cao <cmm@us.ibm.com> wrote:
>>>>
>>>>>I run into OOM problem again on 2.6.12-rc1. I run some(20) fsx tests on
>>>>>2.6.12-rc1 kernel(and 2.6.11-mm4) on ext3 filesystem, after about 10
>>>>>hours the system hit OOM, and OOM keep killing processes one by one. I
>>>>>could reproduce this problem very constantly on a 2 way PIII 700MHZ with
>>>>>512MB RAM. Also the problem could be reproduced on running the same test
>>>>>on reiser fs.
>>>>>
>>>>>The fsx command is:
>>>>>
>>>>>./fsx -c 10 -n -r 4096 -w 4096 /mnt/test/foo1 &
>>>>
>>>>I was able to reproduce this on ext3. Seven instances of the above leaked
>>>>10-15MB over 10 hours. All of it permanently stuck on the LRU.
>>>>
>>>>I'll continue to poke at it - see what kernel it started with, which
>>>>filesystems it affects, whether it happens on UP&&!PREEMPT, etc. Not a
>>>>quick process.
>>>
>>>I reproduced *similar* issue with 2.6.11. The reason I say similar, is
>>>there is no OOM kill, but very low free memory and machine doesn't
>>>respond at all. (I booted my machine with 256M memory and ran 20 copies
>>>of fsx on ext3).
>>>
>>>
>>
>>Yes, I re-run the same test on 2.6.11 for 24 hours, like Badari see on
>>his machine, my machine did not go to OOM on 2.6.11,still alive, but
>>memory is very low(only 5M free). Killed all fsx and umount the ext3
>>filesystem did not bring back much memory. I will going to rerun the
>>tests without the mapped read/write to see what happen.
>>
>>
>
>
> Run fsx tests without mapped IO on 2.6.11 seems fine. Here is
> the /proc/meminfo after 18 hours run:

Mingming, Reproduce it on 2.6.11 with mapped IO tests. That will tell
us when the regression started.

Thanks,
Badari

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-04-06 13:31    [W:0.102 / U:0.180 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site