Re: [patch 10/18] oom: enable oom tasklist dump by default

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On Sun, 6 Jun 2010 15:34:35 -0700 (PDT)
David Rientjes <rientjes@xxxxxxxxxx> wrote:

> The oom killer tasklist dump, enabled with the oom_dump_tasks sysctl, is
> very helpful information in diagnosing why a user's task has been killed.
> It emits useful information such as each eligible thread's memory usage
> that can determine why the system is oom, so it should be enabled by
> default.

Unclear.  On a large system the poor thing will now spend half an hour
squirting junk out the diagnostic port.  Probably interspersed with the
occasional whine from the softlockup detector.  And for many
applications, spending a long time stuck in the kernel printing
diagnostics is equivalent to an outage.

I guess people can turn it off again if this happens, but they'll get
justifiably grumpy at us.  I wonder if this change is too
developer-friendly and insufficiently operator-friendly.

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