linux-kernel - Re: [PATCH 0/3] perf-bench: introduce futex microbenchmarks

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Date:	Mon, 16 Dec 2013 06:44:58 -0800
From:	Davidlohr Bueso <davidlohr@...com>
To:	Ingo Molnar <mingo@...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 0/3] perf-bench: introduce futex microbenchmarks

On Mon, 2013-12-16 at 11:08 +0100, Ingo Molnar wrote:
> * Davidlohr Bueso <davidlohr@...com> wrote:
> 
> > This patchset adds three programs that stress and measure different 
> > futex operations: (i) uaddr hashing, (ii) wakeups and (iii) 
> > requeuing/waiting.
> > 
> > More details and usage examples in each individual patch, along with 
> > parameter descriptions in the code.
> > 
> > While the previous effort (https://lkml.org/lkml/2012/5/17/207) to 
> > add futex benchmarks to perf-bench failed, I strongly believe that 
> > perf is an ideal place for these kinds of programs. This patchset is 
> > different from Hitoshi's because it does not try to take over 
> > Darren's futextest suite, and only deals with finer grained aspects 
> > of the kernel's implementation, and thus mostly useful for kernel 
> > hacking. Furthermore, by being part of the kernel tree, it can get 
> > more attention and naturally evolve with time.
> 
> Looks pretty useful!
> 
> Could the two approaches be merged?

Unless Darren doesn't want to, I don't see why not. I can resurrect
Hitoshi's original patch if/after this series is applied.

Thanks,
Davidlohr

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