Re: 2.6.21 frozen for a few minutes, swapping to disk

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Andrew Morton wrote:
On Tue, 01 May 2007 15:42:30 +1000 Nick Piggin <[email protected]> wrote:


hm, a genuine oom on an all-ext3 data=ordered i386 system, just like a
million other people.  How very weird.

I assume all those pages on the LRU are pagecache pages which for some
reason we're unable to reclaim.

It looks like it used up all swap? I'd guess a memory leak in some
application, or maybe a page refcount leak somewhere.


yes, I missed that.   The number of mapped pages is tiny so the thing has
been trying to swap out like.

I didn't quite parse this :)

If the memory is leaking slowly, it could be eventually pushing
everything out to swap without having a large amount of mapped pages.

Or if something is slowly writing stuff to tmpfs, that may not show
up in mapped pages either.


The question is: how much memory is free after the oom-killing storm?
If it's "lots" then it's probably an application problem.  If it's
"not much" then perhaps there's a kernel leak.

Yeah, or a tmpfs filesystem being filled up (what does `df` say?).

--
SUSE Labs, Novell Inc.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux