From: "K.R. Foley" <kr@cybsft.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org,
Gunter Ohrner <G.Ohrner@post.rwth-aachen.de>,
john stultz <johnstul@us.ibm.com>
Subject: Re: 2.6.15-rc5-rt2 slowness
Date: Sun, 18 Dec 2005 10:05:25 -0600 [thread overview]
Message-ID: <43A588C5.4020907@cybsft.com> (raw)
In-Reply-To: <1134860251.13138.193.camel@localhost.localdomain>
Steven Rostedt wrote:
> Ingo,
>
> I ported your old changes of 2.6.14-rt22 of mm/slab.c to 2.6.15-rc5-rt2
> and tried it out. I believe that this confirms that the SLOB _is_ the
> problem in the slowness. Booting with this slab patch, gives the old
> speeds that we use to have.
>
> Now, is the solution to bring the SLOB up to par with the SLAB, or to
> make the SLAB as close to possible to the mainline (why remove NUMA?)
> and keep it for PREEMPT_RT?
>
> Below is the port of the slab changes if anyone else would like to see
> if this speeds things up for them.
>
> -- Steve
>
This drastically improves performance on my slower uniprocessor system.
2.6.15-rc5-rt2 still doesn't boot on my dual 933 box, with or without
this patch. I will try to dig into that a bit more today.
--
kr
next prev parent reply other threads:[~2005-12-18 16:08 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-16 11:30 2.6.15-rc5-rt2 slowness 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
2005-12-17 3:33 ` Steven Rostedt
2005-12-17 22:57 ` Steven Rostedt
2005-12-18 16:05 ` K.R. Foley [this message]
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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