Messages in this thread | | | Date | Sat, 24 Mar 2001 13:12:08 +0000 | From | Jonathan Morton <> | Subject | Re: [PATCH] Prevent OOM from killing init |
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>I thought of some things which could break it, which I want to try and deal >with before releasing a patch. Specifically, I want to make freepages.min >sacrosanct, so that malloc() *never* tries to use it. This should be >fairly easy to implement - simply subtract freepages.min from the freemem >part. An even nicer way would be to subtract freepages.low (or some >similar value) instead of freepages.min for non-root or non-privileged >processes.
Hmm, interesting. Even with my modification - which means that vm_enough_memory() will always return false if the allocation would clobber freepages.min - I can still trigger OOM quite easily. Even with no swap on my box, there's a lot of disk activity, probably due to there being virtually no disk cache left - could the generation of disk buffer and cache pages be bypassing vm_enough_memory()? If so, would using freepages.low as the threshold rather than freepages.min help at all? (or have I got everything muddled...)
-------------------------------------------------------------- from: Jonathan "Chromatix" Morton mail: chromi@cyberspace.org (not for attachments) big-mail: chromatix@penguinpowered.com uni-mail: j.d.morton@lancaster.ac.uk
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