Messages in this thread | | | Date | Sun, 25 Apr 2010 09:13:49 +0200 | From | Pavel Machek <> | Subject | Re: swapping when there's a free memory |
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Hi!
> I captured this output of vmstat. The machine was freeing cache and > swapping out pages even when there was a plenty of free memory. > > The machine is sparc64 with 1GB RAM with 2.6.34-rc4. This abnormal > swapping happened during running spadfsck --- a fsck program for a custom > filesystem that caches most reads in its internal cache --- so it reads > buffers and allocates memory at the same time. > > Note that sparc64 doesn't have any low/high memory zones, so it couldn't > be explained by filling one zone and needing to allocate pages in it.
Fragmented memory + high-order allocation?
> This abnormal behavior doesn't happen everytime, it happend about twice > for many spadfsck attempts.
...yep, that would be random. Pavel
-- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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