From: Mike Galbraith <efault@gmx.de>
To: Manfred Spraul <manfred@colorfullife.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Rik van Riel <riel@redhat.com>,
Davidlohr Bueso <davidlohr.bueso@hp.com>,
hhuang@redhat.com, Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH 0/6] ipc/sem.c: performance improvements, FIFO
Date: Tue, 18 Jun 2013 09:14:12 +0200 [thread overview]
Message-ID: <1371539652.6091.91.camel@marge.simpson.net> (raw)
In-Reply-To: <1371538123.6091.87.camel@marge.simpson.net>
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
next prev parent reply other threads:[~2013-06-18 7:14 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-10 17:16 [PATCH 0/6] ipc/sem.c: performance improvements, FIFO Manfred Spraul
2013-06-10 17:16 ` [PATCH 1/6] ipc/util.c, ipc_rcu_alloc: cacheline align allocation Manfred Spraul
2013-06-10 17:16 ` [PATCH 2/6] ipc/sem.c: cacheline align the semaphore structures Manfred Spraul
2013-06-10 17:16 ` [PATCH 3/6] ipc/sem: seperate wait-for-zero and alter tasks into seperate queues Manfred Spraul
2013-06-10 17:16 ` [PATCH 4/6] ipc/sem.c: Always use only one queue for alter operations Manfred Spraul
2013-06-10 17:16 ` [PATCH 5/6] ipc/sem.c: Replace shared sem_otime with per-semaphore value Manfred Spraul
2013-06-10 17:16 ` [PATCH 6/6] ipc/sem.c: Rename try_atomic_semop() to perform_atomic_semop(), docu update Manfred Spraul
2013-06-14 15:38 ` [PATCH 0/6] ipc/sem.c: performance improvements, FIFO Manfred Spraul
2013-06-14 19:05 ` Mike Galbraith
2013-06-15 5:27 ` Manfred Spraul
2013-06-15 5:48 ` Mike Galbraith
2013-06-15 7:30 ` Mike Galbraith
2013-06-15 8:36 ` Mike Galbraith
2013-06-15 11:10 ` Manfred Spraul
2013-06-15 11:37 ` Mike Galbraith
2013-06-18 6:48 ` Mike Galbraith
2013-06-18 7:14 ` Mike Galbraith [this message]
2013-06-19 12:57 ` Mike Galbraith
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