Messages in this thread | | | Date | Thu, 11 Nov 2010 15:21:50 -0800 (PST) | From | David Rientjes <> | Subject | Re: [PATCH] oom: create a resource limit for oom_adj |
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On Fri, 12 Nov 2010, Bodo Eggert wrote:
> The original oom_adj design would e.g. adjust all background tabs to seem > twice as bad as the current tab, so a ever-growing current tab would > only be able to get one or two tabs killed in the worst case: > > System is near OOM while the current tab starts using a normal amount of > mem and grows beyond limits. After it easily killed the first bg tab by > allocating one byte, it needs to grow to twice the normal tab memsize to > start the OOM killer again. By then, it's score will be equal to normal > background tabs (half size, double score), and killing the second tab will > be luck. Killing the third tab should be impossible. > > (If you adjust the bg tabs to be four times as killable, you'll get what > you asked for.) > > > I don't know the current oom_score_adj, it should be able to do something > similar? Or should there be a oom_score_mul? >
oom_score_adj is done on a linear scale instead of exponential so instead of increasing oom_adj by 1 for each hop to the current tab, you would need to double it.
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