Messages in this thread | | | Date | Fri, 15 Jun 2012 10:06:33 +1000 | From | Dave Chinner <> | Subject | Re: [PATCH v2] writeback: avoid race when update bandwidth |
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On Thu, Jun 14, 2012 at 10:00:06PM +0800, Fengguang Wu wrote: > On Thu, Jun 14, 2012 at 12:05:59PM +1000, Dave Chinner wrote: > > On Wed, Jun 13, 2012 at 08:14:34PM +0800, Fengguang Wu wrote: > I wonder if anyone has a simple script for sorting lock_stat output > based on that (and perhaps other selectable) criterion? It should be > possible to write on myself, but still.. ;-) > > Default lock_stat output is sorted by absolute number of contentions.
No that I know of. The default is pretty sane, because a highly contended lock that is causing performance problems will always show up near the top. If it's not in the top 10, then it's usually not worth worrying about until you've dealt with the those above it....
Cheers,
Dave. -- Dave Chinner david@fromorbit.com
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