Re: [PATCH 1/2] perf bench futex: Support parallel waker threads

From: Arnaldo Carvalho de Melo
Date: Fri May 08 2015 - 15:24:40 EST

Em Fri, May 08, 2015 at 11:37:59AM -0700, Davidlohr Bueso escreveu:
> The futex-wake benchmark only measures wakeups done within
> a single process. While this has value in its own, it does
> not really generate any hb->lock contention. A new benchmark
> 'wake-parallel' is added, by extending the futex-wake code
> such that we can measure parallel waker threads. The program
> output shows the avg per-thread latency in order to complete
> its share of wakeups:
> Run summary [PID 13474]: blocking on 512 threads (at [private] futex 0xa88668), 8 threads waking up 64 at a time.

Thanks, applied both to perf/core.

- Arnaldo
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