On Fri, 22 Apr 2011 at 11:58, Minchan Kim wrote:
> You would try to allocate a page from DMA as you don't have a normal zone.
> Although free pages in DMA zone is about 3M, free pages of zone is
> below min of DMA zone. So zone_watermark_ok would be failed.
> But I wonder why VM can't reclaim the pages. As I see the log, there
> are lots of slab pages(710M) in DMA zone while LRU pages are very
> small. SLAB pages are things VM has a trouble to reclaim. I am not
> sure 710M of SLAB is reasonable size. Don't you have experience same
> problem in old kernel?
> If you see the problem first in 2.6.39-rc4, maybe it would be a
> regression(ex, might be slab memory leak)
> Could you get the information about slabinfo(ex, cat /proc/slabinfo)
> right before OOM happens.
> It could say culprit.
It happened again, and again it's du(1) invoking the OOM killer (I'm
running du(1) accross a few directories every 6hrs). This time I got
/proc/slabinfo as well:
* NOTE: slabinfo.txt.gz deflates to ~40MB!)
* messages-2.txt contains the messages of last night's OOM, which
started at Apr 22 00:10:16 PDT
Thanks for looking into it.
BOFH excuse #140:
LBNC (luser brain not connected)