Messages in this thread | | | Date | Mon, 12 Apr 2010 21:00:02 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH -v2] rmap: make anon_vma_prepare link in all the anon_vmas of a mergeable VMA |
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From: Rik van Riel <riel@redhat.com> Date: Mon, Apr 12, 2010 at 02:40:22PM -0400
> On 04/12/2010 12:26 PM, Linus Torvalds wrote: > > >But there is a _much_ more subtle case that involved swapping. > > > >So guys, here's my fairly simple theory on what happens: > > That bug looks entirely possible. Given that Borislav > has heavy swapping going on, it is quite possible that > this is the bug he has been triggering.
Yeah, about that. I dunno whether you guys saw that but the machine has 8Gb of RAM and shouldn't be swapping, AFAIK. The largest mem usage I saw was 5Gb used, most of which pagecache. So I was kinda doubtful when Linus came up with the swapping theory earlier. I'll pay attention to the SwapCached in /proc/meminfo more to see whether we do any swapping. It could be that there is a small amount which is swapped out for whatever reason... Maybe that's the bug...
But I'll give the patch a run anyway in an hour or so anyway.
-- Regards/Gruss, Boris.
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