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From: Frederic Weisbecker <fweisbec@gmail.com>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: LKML <linux-kernel@vger.kernel.org>, Stable <stable@kernel.org>,
	Ingo Molnar <mingo@elte.hu>,
	Arnaldo Carvalho de Melo <acme@redhat.com>,
	Paul Mackerras <paulus@samba.org>,
	Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH] perf: Rebase max unprivileged mlock threshold on top of page size
Date: Wed, 30 Mar 2011 16:53:28 +0200	[thread overview]
Message-ID: <20110330145324.GB2204@nowhere> (raw)
In-Reply-To: <1301496028.4859.183.camel@twins>

On Wed, Mar 30, 2011 at 04:40:28PM +0200, Peter Zijlstra wrote:
> On Wed, 2011-03-30 at 16:04 +0200, Frederic Weisbecker wrote:
> > +int sysctl_perf_event_mlock __read_mostly = (129 * PAGE_SIZE) / 1024; /* 'free' kb per user */
> 
> I'm fairly sure you don't want to do this either: 
>   512 + (PAGE_SIZE / 1024)
> should do I think, there's no reason to further inflate things for large
> page platforms.

Right, that also requires to fix tools that use a default number of pages instead
of computing nr_pages on top of page size and a default kb size.

Will respin by fixing both sides.

Thanks.

  reply	other threads:[~2011-03-30 14:53 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-23 18:29 [PATCH] perf: Better fit max unprivileged mlock pages for tools needs Frederic Weisbecker
2011-03-23 18:38 ` Arnaldo Carvalho de Melo
2011-03-23 21:19 ` [tip:perf/urgent] " tip-bot for Frederic Weisbecker
2011-03-25 10:32 ` [PATCH] " Peter Zijlstra
2011-03-25 14:50   ` Frederic Weisbecker
2011-03-25 15:05     ` Peter Zijlstra
2011-03-30 14:04       ` [PATCH] perf: Rebase max unprivileged mlock threshold on top of page size Frederic Weisbecker
2011-03-30 14:40         ` Peter Zijlstra
2011-03-30 14:53           ` Frederic Weisbecker [this message]
2011-03-31  1:33           ` [PATCH 1/2 v2] " Frederic Weisbecker
2011-03-31 12:41             ` [tip:perf/urgent] " tip-bot for Frederic Weisbecker
2011-03-31  1:35           ` [PATCH 2/2] perf: Mmap 512 kiB by default Frederic Weisbecker
2011-03-31  8:09             ` Peter Zijlstra
2011-03-31 12:33               ` Frederic Weisbecker
2011-03-31 12:41             ` [tip:perf/urgent] perf: mmap " tip-bot for Frederic Weisbecker

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