From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
Han Pingtian <phan@redhat.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Ingo Molnar <mingo@elte.hu>,
Stephane Eranian <eranian@google.com>, Stable <stable@kernel.org>
Subject: Re: [PATCH] perf: Better fit max unprivileged mlock pages for tools needs
Date: Fri, 25 Mar 2011 16:05:12 +0100 [thread overview]
Message-ID: <1301065512.2250.223.camel@laptop> (raw)
In-Reply-To: <AANLkTinB2EAh=mpqh-y4=5xKPdyJWwUWFVMk=WAx1QBp@mail.gmail.com>
On Fri, 2011-03-25 at 15:50 +0100, Frederic Weisbecker wrote:
> 2011/3/25 Peter Zijlstra <a.p.zijlstra@chello.nl>:
> > On Wed, 2011-03-23 at 19:29 +0100, Frederic Weisbecker wrote:
> >
> >> -int sysctl_perf_event_mlock __read_mostly = 512; /* 'free' kb per user */
> >> +/* Minimum for 128 pages + 1 for the user control page */
> >> +int sysctl_perf_event_mlock __read_mostly = 516; /* 'free' kb per user */
> >
> > This assumes PAGE_SIZE = 4k..
>
> Yeah, should I rebase the value on top of PAGE_SIZE?
Possibly yeah, I guess that when the base page size if 64k you really
can't do anything about wasting the whole first page, comes with the
territory.
next prev parent reply other threads:[~2011-03-25 15:03 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 [this message]
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
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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