From: Andi Kleen <andi@firstfloor.org>
To: "Styner, Douglas W" <douglas.w.styner@intel.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
linux-driver@qlogic.com, linux-scsi@vger.kernel.org
Subject: Re: Mainline kernel OLTP performance update
Date: Mon, 27 Apr 2009 09:02:40 +0200 [thread overview]
Message-ID: <87ljpmk29b.fsf@basil.nowhere.org> (raw)
In-Reply-To: <D7C42C27E6CB1E4D8CBDF2F81EA92A260345836A3A@azsmsx501.amr.corp.intel.com> (Douglas W. Styner's message of "Thu, 23 Apr 2009 09:49:57 -0700")
"Styner, Douglas W" <douglas.w.styner@intel.com> writes:
>
> ======oprofile 0.9.3 CPU_CLK_UNHALTED for top 30 functions
> Cycles% 2.6.24.2 Cycles% 2.6.30-rc2
> 74.8578 <database> 67.6966 <database>
The dip in database cycles is indeed worrying.
> 1.0500 qla24xx_start_scsi 1.1724 qla24xx_start_scsi
> 0.8089 schedule 1.0578 qla24xx_intr_handler
> 0.5864 kmem_cache_alloc 0.8259 __schedule
> 0.4989 __blockdev_direct_IO 0.7451 kmem_cache_alloc
> 0.4357 __sigsetjmp 0.4872 __blockdev_direct_IO
> 0.4152 copy_user_generic_string 0.4390 task_rq_lock
> 0.3953 qla24xx_intr_handler 0.4338 __sigsetjmp
And also why the qla24xx_intr_handler became ~2.5x as expensive.
Cc linux-scsi and qla24xx maintainers.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2009-04-27 7:02 UTC|newest]
Thread overview: 137+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-23 16:49 Mainline kernel OLTP performance update Styner, Douglas W
2009-04-27 7:02 ` Andi Kleen [this message]
2009-04-27 18:38 ` Discrepancies between Oprofile and vmstat Styner, Douglas W
2009-04-27 18:49 ` Andi Kleen
2009-04-27 18:53 ` Discrepancies between Oprofile and vmstat II Andi Kleen
2009-04-27 18:51 ` Styner, Douglas W
2009-04-27 22:15 ` Styner, Douglas W
2009-04-27 22:22 ` Andi Kleen
2009-04-27 22:35 ` Styner, Douglas W
2009-04-28 5:26 ` Eric Dumazet
2009-04-28 16:57 ` Mainline kernel OLTP performance update Chuck Ebbert
2009-04-28 17:15 ` James Bottomley
2009-04-28 17:17 ` 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
2009-04-28 17:08 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
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
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
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