linux-kernel - Re: [PATCH 2/3] perf-bench: add futex-wake microbenchmark

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Message-ID: <1387205130.2797.4.camel@buesod1.americas.hpqcorp.net>
Date:	Mon, 16 Dec 2013 06:45:30 -0800
From:	Davidlohr Bueso <davidlohr@...com>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	linux-kernel@...r.kernel.org, acme@...stprotocols.net,
	mingo@...hat.com, dvhart@...ux.intel.com, peterz@...radead.org,
	tglx@...utronix.de, jason.low2@...com, Waiman.Long@...com,
	scott.norton@...com, aswin@...com
Subject: Re: [PATCH 2/3] perf-bench: add futex-wake microbenchmark

On Mon, 2013-12-16 at 14:25 +0900, Namhyung Kim wrote:
> Hi Davidlohr,
> 
> On Sat, 14 Dec 2013 20:31:56 -0800, Davidlohr Bueso wrote:
> > Block a bunch of threads on a futex and wake them up, N at a time.
> >
> > This program is particularly useful to measure the latency of nthread wakeups
> > in non-error situations:  all waiters are queued and all wake calls wakeup
> > one or more tasks. An example run:
> >
> > $ perf bench futex -t 512 -r 100
> 
> Did you mean 'perf bench futex wake'?

Yes I did.

Thanks,
Davidlohr

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