Messages in this thread | | | Date | Thu, 18 Nov 2004 23:10:44 +1100 | From | Nick Piggin <> | Subject | Re: Fixing page allocation failure |
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Morten W. Petersen wrote: > Hi all, > > I have a server that a couple of times each day squirts out messages > about page allocation failures (python: page allocation failure. > order:3, mode:0x20). What's the reason for this, and could it affect > the stability of the box? > > The server that squirts these messages just crashed, for no apparent > reason, so that's why I'm wondering. It's a UML box. Also, I'm > wondering, are there any howto's for tweaking /proc settings so that the > machine becomes more stable? Are there any settings for increasing the > verbosity of the kernel log so that the reason for a server crashing is > easier to find? > > Thanks in advance, and please CC me any replies :) > > Regards, > > Morten
Yeah you can increase /proc/sys/vm/min_free_kbytes to help the problem.
There is a possibly better solution in the -mm kernels which should get merged into 2.6 sooner or later - but there is still no way to guarantee safety from allocation failures. If they cause crashes then that is a bug, so report them here with traces and a description of the workload and system hardware, etc.
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