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From: Marcelo Tosatti <mtosatti@redhat.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>,
	Luiz Capitulino <lcapitulino@redhat.com>,
	Vikas Shivappa <vikas.shivappa@intel.com>,
	Tejun Heo <tj@kernel.org>, Yu Fenghua <fenghua.yu@intel.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH RFC] ioctl based CAT interface
Date: Mon, 16 Nov 2015 17:52:19 -0200	[thread overview]
Message-ID: <20151116195219.GA317@amt.cnet> (raw)
In-Reply-To: <alpine.DEB.2.11.1511161541080.3761@nanos>

On Mon, Nov 16, 2015 at 03:42:08PM +0100, Thomas Gleixner wrote:
> On Mon, 16 Nov 2015, Marcelo Tosatti wrote:
> > You need a task to be part of two cgroups at one time, 
> > to support the following configuration:
> > 
> > Task-A: 70% of cache reserved exclusively (reservation-0).
> >         20% of cache reserved (reservation-1).
> > 
> > Task-B: 20% of cache reserved (reservation-1).
> 
> Why would such a configuration be desired?
> 
> Thanks,
> 
> 	tglx

The HW supports cache sharing, its a HW feature.

Makes sense to share reserved cache between threads of an application
that for example share a library.


  reply	other threads:[~2015-11-16 21:22 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-13 16:39 [PATCH RFC] ioctl based CAT interface Marcelo Tosatti
2015-11-13 16:51 ` Peter Zijlstra
2015-11-13 17:27   ` Marcelo Tosatti
2015-11-13 17:43     ` Marcelo Tosatti
2015-11-16  8:59       ` Peter Zijlstra
2015-11-16 13:03         ` Marcelo Tosatti
2015-11-16 14:42           ` Thomas Gleixner
2015-11-16 19:52             ` Marcelo Tosatti [this message]
2015-11-16 15:01           ` Peter Zijlstra
2015-11-16 19:54             ` Marcelo Tosatti
2015-11-16 21:22             ` Marcelo Tosatti
2015-11-13 19:04     ` Luiz Capitulino
2015-11-13 20:22       ` Marcelo Tosatti
2015-11-16  9:03       ` Peter Zijlstra
2015-11-13 17:33   ` Marcelo Tosatti
2015-11-16  9:07     ` Peter Zijlstra
2015-11-16 14:37       ` Marcelo Tosatti
2015-11-16 15:37         ` Peter Zijlstra
2015-11-16 16:18       ` Luiz Capitulino
2015-11-16 16:26         ` Peter Zijlstra
2015-11-16 16:48           ` Luiz Capitulino
2015-11-16 16:39       ` Marcelo Tosatti
2015-11-17  1:01         ` Marcelo Tosatti
2015-11-13 18:01   ` Marcelo Tosatti
2015-11-16  9:09     ` Peter Zijlstra
2015-11-13 19:08 ` Luiz Capitulino
2015-12-03 21:58 ` Pavel Machek

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