From: Andi Kleen <andi@firstfloor.org>
To: "Wilcox, Matthew R" <matthew.r.wilcox@intel.com>
Cc: "Styner, Douglas W" <douglas.w.styner@intel.com>,
Andi Kleen <andi@firstfloor.org>,
Andrew Morton <akpm@linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Tripathi, Sharad C" <sharad.c.tripathi@intel.com>,
"arjan@linux.intel.com" <arjan@linux.intel.com>,
"Kleen, Andi" <andi.kleen@intel.com>,
"Siddha, Suresh B" <suresh.b.siddha@intel.com>,
"Ma, Chinang" <chinang.ma@intel.com>,
"Wang, Peter Xihong" <peter.xihong.wang@intel.com>,
"Nueckel, Hubert" <hubert.nueckel@intel.com>,
"Recalde, Luis F" <luis.f.recalde@intel.com>,
"Nelson, Doug" <doug.nelson@intel.com>,
"Cheng, Wu-sun" <wu-sun.cheng@intel.com>,
"Prickett, Terry O" <terry.o.prickett@intel.com>,
"Shunmuganathan,
Rajalakshmi" <rajalakshmi.shunmuganathan@intel.com>,
"Garg, Anil K" <anil.k.garg@intel.com>,
"Chilukuri, Harita" <harita.chilukuri@intel.com>,
"chris.mason@oracle.com" <chris.mason@oracle.com>
Subject: Re: Mainline kernel OLTP performance update
Date: Wed, 29 Apr 2009 18:19:18 +0200 [thread overview]
Message-ID: <20090429161918.GI23223@one.firstfloor.org> (raw)
In-Reply-To: <CAC4B8726E86A142B27A9E9A2F2F1247AB6943CB@rrsmsx505.amr.corp.intel.com>
On Wed, Apr 29, 2009 at 10:06:44AM -0600, Wilcox, Matthew R wrote:
> Is it possible that's simply 'oprofile has a 4% overhead'?
We would expect that overhead to be spread between kernel and
database then, not only database. Maybe it's partly, but it's
probably not the complete answer.
Also at least the user space/context part of oprofile is profiled by
oprofile too, just not the nmi handler, so if these parts are
expensive it should be visible.
That the lowering of the period made a difference was interesting.
It might be that oprofile is just getting more and more inaccurate.
-Andi
next prev parent reply other threads:[~2009-04-29 16:15 UTC|newest]
Thread overview: 129+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-28 17:08 Mainline kernel OLTP performance update Styner, Douglas W
2009-04-29 7:29 ` Andrew Morton
2009-04-29 8:28 ` Andi Kleen
2009-04-29 16:00 ` Styner, Douglas W
2009-04-29 16:06 ` Wilcox, Matthew R
2009-04-29 16:19 ` Andi Kleen [this message]
2009-04-29 15:48 ` Styner, Douglas W
2009-04-29 16:07 ` Andrew Morton
2009-04-29 16:25 ` Peter Zijlstra
2009-04-29 17:46 ` Chris Mason
2009-04-29 18:06 ` Pallipadi, Venkatesh
2009-04-29 18:25 ` Styner, Douglas W
2009-04-29 17:52 ` Styner, Douglas W
-- strict thread matches above, loose matches on Subject: below --
2010-01-25 18:26 Ma, Chinang
2009-05-04 15:54 Styner, Douglas W
2009-05-06 6:29 ` Anirban Chakraborty
2009-05-06 15:53 ` Wilcox, Matthew R
2009-05-06 18:05 ` Styner, Douglas W
2009-05-06 18:12 ` Wilcox, Matthew R
2009-05-06 18:24 ` Anirban Chakraborty
2009-05-06 19:25 ` Wilcox, Matthew R
2009-05-06 18:19 ` Styner, Douglas W
2009-04-28 17:22 Styner, Douglas W
2009-04-23 16:49 Styner, Douglas W
2009-04-27 7:02 ` Andi Kleen
2009-04-28 16:57 ` Chuck Ebbert
2009-04-28 17:15 ` James Bottomley
2009-04-28 17:17 ` Styner, Douglas W
2009-01-13 21:10 Ma, Chinang
2009-01-13 22:44 ` Wilcox, Matthew R
2009-01-15 0:35 ` Andrew Morton
2009-01-15 1:21 ` Matthew Wilcox
2009-01-15 2:04 ` Andrew Morton
2009-01-15 2:27 ` Steven Rostedt
2009-01-15 7:11 ` Ma, Chinang
2009-01-15 7:11 ` Ma, Chinang
2009-01-19 18:04 ` Chris Mason
2009-01-19 18:04 ` Chris Mason
2009-01-19 18:37 ` Steven Rostedt
2009-01-19 18:55 ` Chris Mason
2009-01-19 18:55 ` Chris Mason
2009-01-19 19:07 ` Steven Rostedt
2009-01-19 19:07 ` Steven Rostedt
2009-01-19 23:40 ` Ingo Molnar
2009-01-19 23:40 ` Ingo Molnar
2009-01-19 18:37 ` Steven Rostedt
2009-01-15 2:39 ` Andi Kleen
2009-01-15 2:47 ` Matthew Wilcox
2009-01-15 3:36 ` Andi Kleen
2009-01-20 13:27 ` Jens Axboe
[not found] ` <588992150B702C48B3312184F1B810AD03A497632C@azsmsx501.amr.corp.intel.com>
2009-01-22 11:29 ` Jens Axboe
[not found] ` <588992150B702C48B3312184F1B810AD03A4F59632@azsmsx501.amr.corp.intel.com>
2009-01-27 8:28 ` Jens Axboe
2009-01-15 7:24 ` Nick Piggin
2009-01-15 9:46 ` Pekka Enberg
2009-01-15 13:52 ` Matthew Wilcox
2009-01-15 14:42 ` Pekka Enberg
2009-01-16 10:16 ` Pekka Enberg
2009-01-16 10:21 ` Nick Piggin
2009-01-16 10:31 ` Pekka Enberg
2009-01-16 10:42 ` Nick Piggin
2009-01-16 10:55 ` Pekka Enberg
2009-01-19 7:13 ` Nick Piggin
2009-01-19 8:05 ` Pekka Enberg
2009-01-19 8:33 ` Nick Piggin
2009-01-19 8:42 ` Nick Piggin
2009-01-19 8:47 ` Pekka Enberg
2009-01-19 8:57 ` Nick Piggin
2009-01-19 9:48 ` Pekka Enberg
2009-01-19 10:03 ` Nick Piggin
2009-01-16 20:59 ` Christoph Lameter
2009-01-16 0:27 ` Andrew Morton
2009-01-16 4:03 ` Nick Piggin
2009-01-16 4:12 ` Andrew Morton
2009-01-16 6:46 ` Nick Piggin
2009-01-16 6:55 ` Matthew Wilcox
2009-01-16 7:06 ` Nick Piggin
2009-01-16 7:53 ` Zhang, Yanmin
2009-01-16 10:20 ` Andi Kleen
2009-01-20 5:16 ` Zhang, Yanmin
2009-01-21 23:58 ` Christoph Lameter
2009-01-22 8:36 ` Zhang, Yanmin
2009-01-22 9:15 ` Pekka Enberg
2009-01-22 9:15 ` Pekka Enberg
2009-01-22 9:28 ` Zhang, Yanmin
2009-01-22 9:47 ` Pekka Enberg
2009-01-23 3:02 ` Zhang, Yanmin
2009-01-23 3:02 ` Zhang, Yanmin
2009-01-23 6:52 ` Pekka Enberg
2009-01-23 6:52 ` Pekka Enberg
2009-01-23 8:06 ` Pekka Enberg
2009-01-23 8:30 ` Zhang, Yanmin
2009-01-23 8:40 ` Pekka Enberg
2009-01-23 9:46 ` Pekka Enberg
2009-01-23 15:22 ` Christoph Lameter
2009-01-23 15:31 ` Pekka Enberg
2009-01-23 15:55 ` Christoph Lameter
2009-01-23 16:01 ` Pekka Enberg
2009-01-24 2:55 ` Zhang, Yanmin
2009-01-24 7:36 ` Pekka Enberg
2009-02-12 5:22 ` Zhang, Yanmin
2009-02-12 5:47 ` Zhang, Yanmin
2009-02-12 5:47 ` Zhang, Yanmin
2009-02-12 15:25 ` Christoph Lameter
2009-02-12 16:07 ` Pekka Enberg
2009-02-12 16:03 ` Pekka Enberg
2009-01-26 17:36 ` Christoph Lameter
2009-02-01 2:52 ` Zhang, Yanmin
2009-01-23 8:33 ` Nick Piggin
2009-01-23 9:02 ` Zhang, Yanmin
2009-01-16 7:00 ` Andrew Morton
2009-01-16 7:25 ` Nick Piggin
2009-01-16 8:59 ` Nick Piggin
2009-01-16 18:11 ` Rick Jones
2009-01-19 7:43 ` Nick Piggin
2009-01-19 22:19 ` Rick Jones
2009-01-15 14:12 ` James Bottomley
2009-01-15 17:44 ` Andrew Morton
2009-01-15 18:00 ` Matthew Wilcox
2009-01-15 18:14 ` Steven Rostedt
2009-01-15 18:44 ` Gregory Haskins
2009-01-15 18:46 ` Wilcox, Matthew R
2009-01-15 18:46 ` Wilcox, Matthew R
2009-01-15 19:44 ` Ma, Chinang
2009-01-16 18:14 ` Gregory Haskins
2009-01-16 19:09 ` Steven Rostedt
2009-01-20 12:45 ` Gregory Haskins
2009-01-15 19:28 ` Ma, Chinang
2009-01-15 16:48 ` Ma, Chinang
2009-01-12 18:30 Ma, Chinang
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=20090429161918.GI23223@one.firstfloor.org \
--to=andi@firstfloor.org \
--cc=akpm@linux-foundation.org \
--cc=andi.kleen@intel.com \
--cc=anil.k.garg@intel.com \
--cc=arjan@linux.intel.com \
--cc=chinang.ma@intel.com \
--cc=chris.mason@oracle.com \
--cc=doug.nelson@intel.com \
--cc=douglas.w.styner@intel.com \
--cc=harita.chilukuri@intel.com \
--cc=hubert.nueckel@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=luis.f.recalde@intel.com \
--cc=matthew.r.wilcox@intel.com \
--cc=peter.xihong.wang@intel.com \
--cc=rajalakshmi.shunmuganathan@intel.com \
--cc=sharad.c.tripathi@intel.com \
--cc=suresh.b.siddha@intel.com \
--cc=terry.o.prickett@intel.com \
--cc=wu-sun.cheng@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.