Messages in this thread | | | Date | Tue, 01 May 2007 15:58:23 +1000 | From | Nick Piggin <> | Subject | Re: 2.6.21 frozen for a few minutes, swapping to disk |
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Andrew Morton wrote: > On Tue, 01 May 2007 15:42:30 +1000 Nick Piggin <nickpiggin@yahoo.com.au> 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?).
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