Messages in this thread | | | Date | Sat, 24 Mar 2001 02:54:55 -0300 (BRST) | From | Rik van Riel <> | Subject | Re: [PATCH] Prevent OOM from killing init |
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On Fri, 23 Mar 2001, Szabolcs Szakacsits wrote:
> When I ported your OOM killer to 2.2.x and integrated it into the > 'reserved root memory' [*] patch, during intensive testing I found two > cases when init was killed. It happened on low-end machines and when > OOM killer wasn't triggered so init was killed in the page fault > handler. The later was also one of the reasons I replaced the "random" > OOM killer in page fault handler with yours [so there is only one OOM > killer].
Good idea, we should do this for 2.4. I cannot remember reading an email from you about this, it's quite possible I just missed it and didn't answer because I never read it ...
> Other things that bothered me, > - niced processes are penalized
This can be considered a bug and should be fixed...
> - trying to kill a task that is permanently in TASK_UNINTERRUPTIBLE > will probably deadlock the machine [or the random OOM killer will > kill the box].
This could indeed be a problem, though I cannot really see any case where a task would be in TASK_UNINTERRUPTIBLE permanently. OTOH, a 1GB read() will take a (much) too long time to finish.
Your ideas sound really good, would you have the time to implement them for 2.4 ?
regards,
Rik -- Virtual memory is like a game you can't win; However, without VM there's truly nothing to lose...
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