linux-kernel - Re: [PATCH -tip] v9 scalable classic RCU implementation

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Message-ID: <20081203001811.GF6703@one.firstfloor.org>
Date:	Wed, 3 Dec 2008 01:18:12 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org,
	cl@...ux-foundation.org, mingo@...e.hu, akpm@...ux-foundation.org,
	manfred@...orfullife.com, dipankar@...ibm.com,
	josht@...ux.vnet.ibm.com, schamp@....com, niv@...ibm.com,
	dvhltc@...ibm.com, ego@...ibm.com, laijs@...fujitsu.com,
	rostedt@...dmis.org, peterz@...radead.org, penberg@...helsinki.fi,
	tglx@...utronix.de
Subject: Re: [PATCH -tip] v9 scalable classic RCU implementation

On Tue, Dec 02, 2008 at 03:51:45PM -0800, Paul E. McKenney wrote:
> On Wed, Dec 03, 2008 at 12:31:44AM +0100, Andi Kleen wrote:
> > > o	I now test with a more brutal random-selection online/offline
> > > 	script (attached).  Probably more brutal than it needs to be
> > > 	on the people reading it as well, but so it goes.
> > 
> > Does that cover both dynticks on and off? afaik the dynticks off problem
> > I ran into on a 16 thread box and we discussed some time ago is still there.
> 
> The failures I see with this patch I also see with mainline.  Are you
> seeing something with this patch that does not happen with mainline?

No, that is in mainline too. Sorry to be misleading. Do you see the
same problems in your testing?

-Andi

-- 
ak@...ux.intel.com
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