Date: Tue, 20 Dec 2005 14:32:30 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: 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
Message-ID: <20051220133230.GC24408@elte.hu>
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* Steven Rostedt <rostedt@goodmis.org> wrote:

> 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.

ok, i've added this back in - but we really need a cleaner port of SLAB 
...

	Ingo
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