linux-kernel - Re: [PATCH 0/6] ipc/sem.c: performance improvements, FIFO

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Message-ID: <1371539652.6091.91.camel@marge.simpson.net>
Date:	Tue, 18 Jun 2013 09:14:12 +0200
From:	Mike Galbraith <efault@....de>
To:	Manfred Spraul <manfred@...orfullife.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>,
	Davidlohr Bueso <davidlohr.bueso@...com>, hhuang@...hat.com,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 0/6] ipc/sem.c: performance improvements, FIFO

On Tue, 2013-06-18 at 08:48 +0200, Mike Galbraith wrote: 
> On Sat, 2013-06-15 at 13:10 +0200, Manfred Spraul wrote: 

P.S.

> > My current guess:
> > sem_lock() somehow ends up in lock_array.

Tracing shows that happens precisely one time, at end of benchmark.

-Mike

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