linux-kernel - Re: [RT LATENCY] 249 microsecond latency caused by slub's unfreeze

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Message-ID: <1364228039.6345.183.camel@gandalf.local.home>
Date:	Mon, 25 Mar 2013 12:13:59 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Christoph Lameter <cl@...ux.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	RT <linux-rt-users@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Clark Williams <clark@...hat.com>
Subject: Re: [RT LATENCY] 249 microsecond latency caused by slub's
 unfreeze_partials() code.

On Mon, 2013-03-25 at 11:57 -0400, Steven Rostedt wrote:

> > 
> > You can eliminate the whole thing by setting
> > 
> > /sys/kernel/slab/<whatever/cpu_partial
> > 
> > to zero.
> 
> Thanks! I'll give this a try.
> 

BTW, what impact does setting all cpu_partial files to zero have on the
system?

-- Steve


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