From: Pekka Enberg <penberg@cs.helsinki.fi>
To: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>,
Christoph Lameter <cl@linux-foundation.org>,
netdev <netdev@vger.kernel.org>, Tejun Heo <tj@kernel.org>,
alex.shi@intel.com,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Ma, Ling" <ling.ma@intel.com>,
"Chen, Tim C" <tim.c.chen@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
mingo@elte.hu
Subject: Re: hackbench regression due to commit 9dfc6e68bfe6e
Date: Wed, 07 Apr 2010 13:47:37 +0300 [thread overview]
Message-ID: <4BBC62C9.80802@cs.helsinki.fi> (raw)
In-Reply-To: <1270607668.2078.259.camel@ymzhang.sh.intel.com>
Zhang, Yanmin kirjoitti:
> Kernel 2.6.34-rc3:
> # Samples: 13079611308 LLC-load-misses
> #
> # Overhead Command Shared Object Symbol
> # ........ ............... .................................................................... ......
> #
> 18.55% hackbench [kernel.kallsyms] [k] copy_user_generic_str
> ing
> 13.19% hackbench [kernel.kallsyms] [k] unix_stream_recvmsg
> 11.62% hackbench [kernel.kallsyms] [k] kfree
> 8.54% hackbench [kernel.kallsyms] [k] kmem_cache_free
> 7.88% hackbench [kernel.kallsyms] [k] __kmalloc_node_track_
> caller
> 6.54% hackbench [kernel.kallsyms] [k] kmem_cache_alloc_node
> 5.94% hackbench [kernel.kallsyms] [k] kfree_skb
> 3.48% hackbench [kernel.kallsyms] [k] __slab_free
> 2.15% hackbench [kernel.kallsyms] [k] _raw_spin_lock
> 1.83% hackbench [kernel.kallsyms] [k] schedule
> 1.82% hackbench [kernel.kallsyms] [k] get_partial_node
> 1.59% hackbench hackbench [.] receiver
> 1.37% hackbench libpthread-2.9.so [.] __read
Btw, you might want to try out "perf record -g" and "perf report
--callchain fractal,5" to get a better view of where we're spending
time. Perhaps you can spot the difference with that more easily.
next prev parent reply other threads:[~2010-04-07 10:47 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1269506457.4513.141.camel@alexs-hp.sh.intel.com>
[not found] ` <alpine.DEB.2.00.1003250942080.2670@router.home>
[not found] ` <1269570902.9614.92.camel@alexs-hp.sh.intel.com>
[not found] ` <1270114166.2078.107.camel@ymzhang.sh.intel.com>
[not found] ` <alpine.DEB.2.00.1004011050340.16531@router.home>
[not found] ` <1270195589.2078.116.camel@ymzhang.sh.intel.com>
[not found] ` <alpine.DEB.2.00.1004050853300.23149@router.home>
[not found] ` <i2z84144f021004051030k7ff5190cyc083aa12c552dfac@mail.gmail.com>
[not found] ` <4BBA8DF9.8010409@kernel.org>
[not found] ` <1270542497.2078.123.camel@ymzhang.sh.intel.com>
[not found] ` <alpine.DEB.2.00.1004061033330.18750@router.home>
[not found] ` <alpine.DEB.2.00.1004061552500.19151@router.home>
2010-04-06 22:10 ` hackbench regression due to commit 9dfc6e68bfe6e Eric Dumazet
2010-04-07 2:34 ` Zhang, Yanmin
2010-04-07 6:39 ` Eric Dumazet
2010-04-07 9:07 ` Zhang, Yanmin
2010-04-07 9:20 ` Eric Dumazet
2010-04-07 10:47 ` Pekka Enberg [this message]
2010-04-07 16:30 ` Christoph Lameter
2010-04-07 16:43 ` Christoph Lameter
2010-04-07 16:49 ` Pekka Enberg
2010-04-07 16:52 ` Pekka Enberg
2010-04-07 18:20 ` Christoph Lameter
2010-04-07 18:25 ` Pekka Enberg
2010-04-07 19:30 ` Christoph Lameter
2010-04-07 18:38 ` Eric Dumazet
2010-04-08 1:05 ` Zhang, Yanmin
2010-04-08 4:59 ` Eric Dumazet
2010-04-08 5:39 ` Eric Dumazet
2010-04-08 7:00 ` Eric Dumazet
2010-04-08 7:05 ` David Miller
2010-04-08 7:20 ` David Miller
2010-04-08 7:25 ` Eric Dumazet
2010-04-08 7:54 ` Zhang, Yanmin
2010-04-08 7:54 ` Eric Dumazet
2010-04-08 8:09 ` Eric Dumazet
2010-04-08 15:34 ` Christoph Lameter
2010-04-08 15:52 ` Eric Dumazet
2010-04-07 18:18 ` Christoph Lameter
2010-04-08 7:18 ` Zhang, Yanmin
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