lkml.org 
[lkml]   [2009]   [Jun]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/3] make mapped executable pages the first class citizen
On Thu, Jun 18, 2009 at 09:57:29AM -0700, Andrew Morton wrote:
> On Thu, 18 Jun 2009 17:18:58 +0100 David Howells <dhowells@redhat.com> wrote:
>
> >
> > Okay, after dropping all my devel patches, I got the OOM to happen again;
> > fresh trace attached. I was running LTP and an NFSD, and I was spamming the
> > NFSD continuously from another machine (mount;tar;umount;repeat).
> >
> >
> > ...
> >
> > Mem-Info:
> > DMA per-cpu:
> > CPU 0: hi: 0, btch: 1 usd: 0
> > CPU 1: hi: 0, btch: 1 usd: 0
> > DMA32 per-cpu:
> > CPU 0: hi: 186, btch: 31 usd: 57
> > CPU 1: hi: 186, btch: 31 usd: 0
> > Active_anon:70104 active_file:1 inactive_anon:6557
> > inactive_file:0 unevictable:0 dirty:0 writeback:0 unstable:0
> > free:4062 slab:41969 mapped:541 pagetables:59663 bounce:0
>
> 77000 pages in anonymous memory, no swap online.
>
> 42000 pages in slab. Maybe this is a leak?
>
> 60000 pagetable pages. Seems rather a lot?
>
> 179000 pages accounted for above
>
> > DMA free:3920kB min:60kB low:72kB high:88kB active_anon:2268kB inactive_anon:428kB active_file:0kB inactive_file:0kB unevictable:0kB present:15364kB pages_scanned:0 all_unreclaimable? no
> > lowmem_reserve[]: 0 968 968 968
> > DMA32 free:12328kB min:3948kB low:4932kB high:5920kB active_anon:278148kB inactive_anon:25800kB active_file:4kB inactive_file:0kB unevictable:0kB present:992032kB pages_scanned:0 all_unreclaimable? no
> > lowmem_reserve[]: 0 0 0 0
> > DMA: 8*4kB 0*8kB 1*16kB 1*32kB 2*64kB 1*128kB 0*256kB 1*512kB 1*1024kB 1*2048kB 0*4096kB = 3920kB
> > DMA32: 2474*4kB 56*8kB 8*16kB 0*32kB 1*64kB 0*128kB 1*256kB 1*512kB 1*1024kB 0*2048kB 0*4096kB = 12328kB
>
> present memory: 15364 + 992032 = 1007396kB. 250000 pages. It's a 1GB
> box, yes?
>
> > 1660 total pagecache pages
> > 0 pages in swap cache
> > Swap cache stats: add 0, delete 0, find 0/0
> > Free swap = 0kB
> > Total swap = 0kB
> > 255744 pages RAM
> > 5588 pages reserved
> > 255749 pages shared
> > 215785 pages non-shared
> > Out of memory: kill process 6838 (msgctl11) score 152029 or a child
> > Killed process 8850 (msgctl11)
>
> afacit, 70000 pages are unaccounted for (leaked?)

David, could you try running this when it occurred again?

make Documentation/vm/page-types
Documentation/vm/page-types --raw # run as root

Thanks,
Fengguang


\
 
 \ /
  Last update: 2009-06-20 06:37    [W:0.090 / U:11.936 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site