Messages in this thread | | | Subject | Re: [PATCH 3/6] locking/rwsem: Set lock ownership ASAP | From | Davidlohr Bueso <> | Date | Tue, 27 Jan 2015 11:18:24 -0800 |
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On Tue, 2015-01-27 at 18:10 +0100, Peter Zijlstra wrote: > This is the thing I suggested > lkml.kernel.org/r/20150108103708.GE29390@twins.programming.kicks-ass.net > there right?
Yeah.
> Do you have numbers for how much this gained?
This is more of a correctness patch, nothing really tangible for performance -- although I did note a 5% tp increase as that particular workload, as pounds on the osq so we have to wait for the node->next pointer. Otherwise, the window between when we set the lock is taken and owner is set is very small.
Thanks, Davidlohr
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