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From: Steven Rostedt <rostedt@goodmis.org>
To: john stultz <johnstul@us.ibm.com>
Cc: G.Ohrner@post.rwth-aachen.de,
	Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
	linux-kernel@vger.kernel.org
Subject: Re: 2.6.15-rc5-rt2 slowness
Date: Fri, 16 Dec 2005 22:51:42 -0500	[thread overview]
Message-ID: <1134791502.13138.164.camel@localhost.localdomain> (raw)
In-Reply-To: <1134773902.27117.14.camel@cog.beaverton.ibm.com>

On Fri, 2005-12-16 at 14:58 -0800, john stultz wrote:
> On Fri, 2005-12-16 at 07:32 -0500, Steven Rostedt wrote:
> > I'll look into your oops later (or maybe Ingo has some time), but I've
> > also notice the slowness of 2.6.15-rc5-rt2, and I'm investigating it
> > now.
> 
> Hey Steven,
> 	Do check that the slowness you're seeing isn't related to the
> CONFIG_PARANIOD_GENERIC_TIME option being enabled. It is expected that
> the extra checks made by that config option would slow things down a
> bit.
> 

Hi John,

Thanks for the suggestion, but I've been running my tests with that
turned off.  Actually, I've turned off pretty much all debugging, and
added my own logdev device.  As mentioned in my previous email, that I
CC you on, I found the culprit.

Seems, the SLOB is not as fast as the SLAB. I'll look more into this
tomorrow. (My wife is taking by daughter out of town for gymnastics, so
I get to stay home and work :-/ )

-- Steve



  parent reply	other threads:[~2005-12-17  3:51 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-12-16 11:30 Gunter Ohrner
2005-12-16 11:42 ` Gunter Ohrner
2005-12-16 12:04   ` Gunter Ohrner
2005-12-16 12:34   ` Steven Rostedt
2005-12-16 12:32 ` Steven Rostedt
2005-12-16 22:58   ` john stultz
2005-12-17  0:22     ` Gunter Ohrner
2005-12-17  3:51     ` Steven Rostedt [this message]
2005-12-17  3:33 ` Steven Rostedt
2005-12-17 22:57   ` Steven Rostedt
2005-12-18 16:05     ` K.R. Foley
2005-12-20 13:32     ` Ingo Molnar
2005-12-20 13:38       ` Steven Rostedt
2005-12-20 13:57         ` Ingo Molnar
2005-12-20 14:04           ` Steven Rostedt
2005-12-20 14:33             ` Steven Rostedt
2005-12-20 15:07               ` Ingo Molnar
2005-12-20 15:16                 ` Steven Rostedt
2005-12-20 15:44             ` [PATCH RT 00/02] SLOB optimizations Steven Rostedt
2005-12-20 15:56               ` Steven Rostedt
2005-12-20 15:58                 ` Ingo Molnar
2005-12-20 16:13               ` Ingo Molnar
2005-12-20 16:29                 ` Steven Rostedt
2005-12-20 16:39                   ` Steven Rostedt
2005-12-20 18:19               ` Matt Mackall
2005-12-20 19:15                 ` Steven Rostedt
2005-12-20 19:43                   ` Matt Mackall
2005-12-20 20:06                     ` Steven Rostedt
2005-12-20 20:15                   ` Pekka Enberg
2005-12-20 21:42                     ` Steven Rostedt
2005-12-20 21:52                       ` Christoph Lameter
2005-12-20 22:11                         ` Steven Rostedt
2005-12-21  6:36                           ` Ingo Molnar
2005-12-21 12:50                             ` Steven Rostedt
2005-12-21  6:56                       ` Ingo Molnar
2005-12-21  7:16                         ` Pekka J Enberg
2005-12-21  7:50                           ` Ingo Molnar
2005-12-21 13:13                           ` Steven Rostedt
2005-12-21 15:34                             ` [PATCH] SLAB - have index_of bug at compile time Steven Rostedt
2005-12-21  7:20                         ` [PATCH RT 00/02] SLOB optimizations Eric Dumazet
2005-12-21  7:43                           ` Ingo Molnar
2005-12-21  8:02                             ` Eric Dumazet
2005-12-22 18:02                               ` Zwane Mwaikambo
2005-12-22 21:11                               ` Ingo Molnar
2005-12-22 21:39                                 ` Eric Dumazet
2005-12-22 21:44                                 ` George Anzinger
2005-12-22 22:00                                   ` Eric Dumazet
2005-12-22 22:08                                 ` Eric Dumazet
2005-12-23 19:22                                   ` Zwane Mwaikambo
2005-12-21 13:02                         ` Steven Rostedt
2005-12-21  2:30                   ` Nick Piggin
2005-12-21  2:41                     ` Steven Rostedt
2005-12-20 15:44             ` [PATCH RT 01/02] SLOB - remove bigblock list Steven Rostedt
2005-12-20 15:44             ` [PATCH RT 02/02] SLOB - break SLOB up by caches Steven Rostedt
2005-12-20 14:07           ` 2.6.15-rc5-rt2 slowness Steven Rostedt
2005-12-20 15:26           ` K.R. Foley

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