vm.overcommit_memory

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Working more on troubleshooting, which is, as you might gather, an enormous chapter.  I'm not saying that Xen doesn't work -- I'm just saying that you have to define 'work' carefully.

Anyway.  Not that I am bothered.  It's a lovely day.

Really, right now we're thinking about adding a bit on the vm.overcommit_memory and overcommit_ratio sysctls, and how they can be used to improve Xen's stability.  The idea is that, if we make it impossible for the VM subsystem to overcommit memory, the oom-killer should never run.  This will lead to improved stability, since the oom-killer has a regrettable habit of killing sshd.

We need to test that assertion, though, and that sounds suspiciously like work.

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This page contains a single entry by chris t published on October 26, 2008 3:50 PM.

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