linux-kernel - Re: [ANNOUNCE] Full dynticks selftests 0.0.1

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Message-ID: <20130619153847.GA21522@somewhere.redhat.com>
Date:	Wed, 19 Jun 2013 17:38:50 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	Christoph Lameter <cl@...ux.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Li Zhong <zhong@...ux.vnet.ibm.com>,
	Borislav Petkov <bp@...en8.de>,
	Kevin Hilman <khilman@...aro.org>,
	Mats Liljegren <liljegren.mats2@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [ANNOUNCE] Full dynticks selftests 0.0.1

On Tue, Jun 18, 2013 at 11:17:33AM -0700, Paul E. McKenney wrote:
> On Tue, Jun 18, 2013 at 06:22:57PM +0200, Frederic Weisbecker wrote:
> > On Tue, Jun 18, 2013 at 08:15:20AM -0700, Paul E. McKenney wrote:
> > > On Tue, Jun 18, 2013 at 02:20:35PM +0000, Christoph Lameter wrote:
> > > > On Wed, 12 Jun 2013, Frederic Weisbecker wrote:
> > > > 
> > > > > Here it is, a very basic test that runs a userspace loop for ten seconds and dumps a trace
> > > > > of the tick, scheduler, workqueue, and other kind of kernel noise.
> > > > 
> > > > Excellent. Ticks are finally off here. Also has useful instructions on how
> > > > to figure out if something was wrong. The number of >1 microsecond
> > > > disturbances went down from 110 per second to 2.
> > > 
> > > Very cool!
> > > 
> > > Frederic, is the git tree mentioned in your email permanent?  If so, I
> > > will add it to the documentation.
> > 
> > Yep, it should be permanent.
> 
> How about the following?
> 
> 							Thanx, Paul
> 
> ------------------------------------------------------------------------
> 
> nohz_full: Add testing information to documentation
> 
> This commit adds information about testing nohz_full, and also emphasizes
> the fact that you need a multi-CPU system to get any benefit from nohz_full.
> 
> Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> Cc: Frederic Weisbecker <fweisbec@...il.com>

Nice!

Acked-by: Frederic Weisbecker <fweisbec@...il.com>
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