Re: [PATCH] futex: add FUTEX_SET_WAIT operation

Hitoshi Mitake
2009-11-18T01:49:49Z

From: Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH] futex: add FUTEX_SET_WAIT operation
Date: Tue, 17 Nov 2009 18:24:56 +0100

>
> * Peter Zijlstra <peterz@infradead.org> wrote:
>
> > On Tue, 2009-11-17 at 09:18 +0100, Ingo Molnar wrote:
> > >
> > > Would you be interested in adding it as a 'perf bench futex' testcase?
> > > That way kernel developers could monitor futex performance in the future
> > > as well.
> > >
> > > See 'perf bench' in the latest perf events tree:
> > >
> > > http://people.redhat.com/mingo/tip.git/README
> > >
> > > Do 'cd tools/perf; make -j install' to install perf.
> >
> > Darren has recently been putting a lot of effort in making a futex test
> > suite:
> >
> > http://git.kernel.org/?p=linux/kernel/git/dvhart/futextest.git
> >
> > Its not yet complete, but hopefully it will soon be :-)
>
> Looks nice! Any futex performance measurements within it could be added
> to perf bench - with standardized options and output, etc.

It is interesting for me, too.
Can I add your test programs to perf bench, Michel and Darren?
Of course, I'll do every odd job if you permit.

Hitoshi