Messages in this thread | | | Date | Sun, 26 Feb 2006 13:04:02 -0800 | From | Andrew Morton <> | Subject | Re: OOM-killer too aggressive? |
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Andi Kleen <ak@muc.de> wrote: > > On Sun, Feb 26, 2006 at 10:21:52AM -0800, Andrew Morton wrote: > > Chuck Ebbert <76306.1226@compuserve.com> wrote: > > > > > > Chris Largret is getting repeated OOM kills because of DMA memory > > > exhaustion: > > > > > > oom-killer: gfp_mask=0xd1, order=3 > > > > > > > This could be related to the known GFP_DMA oom on some x86_64 machines. > > What known GFP_DMA oom? GFP_DMA allocation should work. >
There's a problem on some x86_64 machines which confuses the BIO layer. BIO makes simple decisions about bounce pfns and some x86_64 memory layouts cause them to go wrong. Net effect: lots of GFP_DMA allocations in the BIO layer.
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