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: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-25 8:40 hackbench regression due to commit 9dfc6e68bfe6e Alex Shi
2010-03-25 14:49 ` Christoph Lameter
2010-03-26 2:35 ` Alex Shi
2010-04-01 9:29 ` Zhang, Yanmin
2010-04-01 15:53 ` Christoph Lameter
2010-04-02 8:06 ` Zhang, Yanmin
2010-04-05 13:54 ` Christoph Lameter
2010-04-05 17:30 ` Pekka Enberg
2010-04-06 1:27 ` Tejun Heo
2010-04-06 8:28 ` Zhang, Yanmin
2010-04-06 15:41 ` Christoph Lameter
2010-04-06 20:55 ` Christoph Lameter
2010-04-06 22:10 ` 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 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
2010-04-07 2:20 ` Zhang, Yanmin
2010-04-07 0:58 ` Zhang, Yanmin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4BBC62C9.80802@cs.helsinki.fi \
--to=penberg@cs.helsinki.fi \
--cc=akpm@linux-foundation.org \
--cc=alex.shi@intel.com \
--cc=cl@linux-foundation.org \
--cc=eric.dumazet@gmail.com \
--cc=ling.ma@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=netdev@vger.kernel.org \
--cc=tim.c.chen@intel.com \
--cc=tj@kernel.org \
--cc=yanmin_zhang@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.