Messages in this thread | | | Date | Mon, 30 Sep 2013 20:14:11 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH, v2] anon_vmas: Convert the rwsem to an rwlock_t |
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On Mon, Sep 30, 2013 at 10:10:27AM -0700, Tim Chen wrote: > Here's the exim workload data: > > rwsem improvment: > Waimain's patch: +2.0% > Alex+Tim's patchset: +4.8% > Waiman+Alex+Tim: +5.3% > > convert rwsem to rwlock_t for root anon_vma lock > Ingo's patch +11.7% >
What happens if you stuff Waiman's qrwlock patches on top of that? admittedly and oft mentioned in this thread, our current rwlock_t is somewhat suboptimal under a number of conditions.
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