Messages in this thread | | | Subject | Re: Mem issues in 2.6.9 (ever since 2.6.9-rc3) and possible cause | From | Thomas Gleixner <> | Date | Sat, 30 Oct 2004 00:39:50 +0200 |
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On Sat, 2004-10-23 at 14:59 +0200, Javier Marcet wrote: > I've been following quite closely the development of 2.6.9, testing > every -rc release and a lot of -bk's. > > Upon changing from 2.6.9-rc2 to 2.6.9-rc3 I began experiencing random > oom kills whenever a high memory i/o load took place. > This happened with plenty of free memory, and with whatever values I > used for vm.overcommit_ratio and vm.overcommit_memory > Doubling the physical RAM didn't change the situation either. > > Having traced the problem to 2.6.9-rc3, I took a look at the differences > in memory handling between 2.6.9-rc2 and 2.6.9-rc3 and with the attached > patch I have no more oom kills. Not a single one. > > I'm not saying everything within the patch is needed, not even that it's > the right thing to change. Nonetheless, 2.6.9 vanilla was unusable, > while this avoids those memory leaks. > > Please, review and see what's wrong there :)
The changes in mempolicy.c are unrelated, except you have a NUMA enabled machine.
The flush_dcache_page() is only relevant for non x86, as they result in a NOP there.
tglx
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