From: Mike Galbraith <efault@gmx.de>
To: Darren Hart <dvhart@linux.intel.com>
Cc: Davidlohr Bueso <davidlohr@hp.com>,
linux-kernel@vger.kernel.org, mingo@kernel.org,
peterz@infradead.org, tglx@linutronix.de, jeffm@suse.com,
torvalds@linux-foundation.org, scott.norton@hp.com,
tom.vaden@hp.com, aswin@hp.com, Waiman.Long@hp.com,
jason.low2@hp.com
Subject: Re: [PATCH 0/5] futex: Wakeup optimizations
Date: Sat, 23 Nov 2013 07:35:03 +0100 [thread overview]
Message-ID: <1385188503.5296.17.camel@marge.simpson.net> (raw)
In-Reply-To: <1385186145.29354.175.camel@dvhart-mobl4.amr.corp.intel.com>
On Fri, 2013-11-22 at 21:55 -0800, Darren Hart wrote:
> On Fri, 2013-11-22 at 16:56 -0800, Davidlohr Bueso wrote:
> > This patchset has also been tested on smaller systems for a variety of
> > benchmarks, including java workloads, kernel builds and custom bang-the-hell-out-of
> > hb locks programs. So far, no functional or performance regressions have been seen.
> > Furthermore, no issues were found when running the different tests in the futextest
> > suite: http://git.kernel.org/cgit/linux/kernel/git/dvhart/futextest.git/
>
> Excellent. Would you be able to contribute any of these (C only please)
> to the stress test group?
FWIW, I plugged this series into an rt kernel (extra raciness) and beat
it up a bit on a 64 core box too. Nothing fell out, nor did futextest
numbers change outside variance (poor box has 8 whole gig ram, single
numa node, so kinda crippled/wimpy, and not good box for benchmarking).
What concerned me most about the series was 5/5.. looks like a great
idea to me, but the original thread did not have a happy ending.
-Mike
next prev parent reply other threads:[~2013-11-23 6:35 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-23 0:56 [PATCH 0/5] futex: Wakeup optimizations Davidlohr Bueso
2013-11-23 0:56 ` [PATCH 1/5] futex: Misc cleanups Davidlohr Bueso
2013-11-23 6:52 ` Darren Hart
2013-11-23 0:56 ` [PATCH 2/5] futex: Check for pi futex_q only once Davidlohr Bueso
2013-11-23 6:33 ` Darren Hart
2013-11-24 5:19 ` Davidlohr Bueso
2013-11-23 0:56 ` [PATCH 3/5] futex: Larger hash table Davidlohr Bueso
2013-11-23 6:52 ` Darren Hart
2013-11-23 0:56 ` [PATCH 4/5] futex: Avoid taking hb lock if nothing to wakeup Davidlohr Bueso
2013-11-23 1:25 ` Linus Torvalds
2013-11-23 3:03 ` Jason Low
2013-11-23 3:19 ` Davidlohr Bueso
2013-11-23 7:23 ` Darren Hart
2013-11-23 13:16 ` Thomas Gleixner
2013-11-24 3:46 ` Linus Torvalds
2013-11-24 5:15 ` Davidlohr Bueso
2013-11-25 12:01 ` Thomas Gleixner
2013-11-25 16:23 ` Thomas Gleixner
2013-11-25 16:36 ` Peter Zijlstra
2013-11-25 17:32 ` Thomas Gleixner
2013-11-25 17:38 ` Peter Zijlstra
2013-11-25 18:55 ` Davidlohr Bueso
2013-11-25 19:52 ` Thomas Gleixner
2013-11-25 19:47 ` Thomas Gleixner
2013-11-25 20:03 ` Darren Hart
2013-11-25 20:26 ` Thomas Gleixner
2013-11-26 13:53 ` Thomas Gleixner
2013-11-23 4:05 ` Waiman Long
2013-11-23 5:40 ` Darren Hart
2013-11-23 5:42 ` Hart, Darren
2013-11-23 7:20 ` Darren Hart
2013-11-23 0:56 ` [PATCH 5/5] sched,futex: Provide delayed wakeup list Davidlohr Bueso
2013-11-23 11:48 ` Peter Zijlstra
2013-11-23 12:01 ` Peter Zijlstra
2013-11-24 5:25 ` Davidlohr Bueso
2013-11-23 5:55 ` [PATCH 0/5] futex: Wakeup optimizations Darren Hart
2013-11-23 6:35 ` Mike Galbraith [this message]
2013-11-23 6:38 ` Davidlohr Bueso
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