On Mon, 2013-09-30 at 20:14 +0200, Peter Zijlstra wrote: > 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.
I've tested with Waiman's qrwlock patches on top of Ingo's patches. It does not affect the throughput for exim and I still get about +11.7% throughput change (same as with Ingo's patch only). Tim -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
