From: Ingo Molnar <mingo@elte.hu>
To: Christoph Hellwig <hch@infradead.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Linus Torvalds <torvalds@osdl.org>, Andrew Morton <akpm@osdl.org>
Subject: Re: [PATCH] mm: remove global locks from mm/highmem.c
Date: Sun, 28 Jan 2007 19:19:09 +0100 [thread overview]
Message-ID: <20070128181909.GA12645@elte.hu> (raw)
In-Reply-To: <20070128155429.GA26855@infradead.org>
* Christoph Hellwig <hch@infradead.org> wrote:
> On Sun, Jan 28, 2007 at 04:48:06PM +0100, Ingo Molnar wrote:
> > i'm sorry, but do you realize that files_lock is a global lock,
> > triggered by /every single/ file close?
>
> Please check which thread you're in before you start such lengthy
> rants.
my reply applies to the other thread too, you made a similar comment
there too:
* Christoph Hellwig <hch@infradead.org> wrote:
> On Sun, Jan 28, 2007 at 12:51:18PM +0100, Peter Zijlstra wrote:
> > This patch-set breaks up the global file_list_lock which was found
> > to be a severe contention point under basically any filesystem
> > intensive workload.
>
> Benchmarks, please. Where exactly do you see contention for this?
Ingo
WARNING: multiple messages have this Message-ID (diff)
From: Ingo Molnar <mingo@elte.hu>
To: Christoph Hellwig <hch@infradead.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Linus Torvalds <torvalds@osdl.org>, Andrew Morton <akpm@osdl.org>
Subject: Re: [PATCH] mm: remove global locks from mm/highmem.c
Date: Sun, 28 Jan 2007 19:19:09 +0100 [thread overview]
Message-ID: <20070128181909.GA12645@elte.hu> (raw)
In-Reply-To: <20070128155429.GA26855@infradead.org>
* Christoph Hellwig <hch@infradead.org> wrote:
> On Sun, Jan 28, 2007 at 04:48:06PM +0100, Ingo Molnar wrote:
> > i'm sorry, but do you realize that files_lock is a global lock,
> > triggered by /every single/ file close?
>
> Please check which thread you're in before you start such lengthy
> rants.
my reply applies to the other thread too, you made a similar comment
there too:
* Christoph Hellwig <hch@infradead.org> wrote:
> On Sun, Jan 28, 2007 at 12:51:18PM +0100, Peter Zijlstra wrote:
> > This patch-set breaks up the global file_list_lock which was found
> > to be a severe contention point under basically any filesystem
> > intensive workload.
>
> Benchmarks, please. Where exactly do you see contention for this?
Ingo
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next prev parent reply other threads:[~2007-01-28 18:21 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-28 14:11 [PATCH] mm: remove global locks from mm/highmem.c Peter Zijlstra
2007-01-28 14:11 ` Peter Zijlstra
2007-01-28 14:49 ` Christoph Hellwig
2007-01-28 14:49 ` Christoph Hellwig
2007-01-28 15:17 ` Ingo Molnar
2007-01-28 15:17 ` Ingo Molnar
2007-01-28 15:28 ` Christoph Hellwig
2007-01-28 15:28 ` Christoph Hellwig
2007-01-28 15:48 ` Ingo Molnar
2007-01-28 15:48 ` Ingo Molnar
2007-01-28 15:54 ` Christoph Hellwig
2007-01-28 15:54 ` Christoph Hellwig
2007-01-28 18:19 ` Ingo Molnar [this message]
2007-01-28 18:19 ` Ingo Molnar
2007-01-28 22:29 ` Andrew Morton
2007-01-28 22:29 ` Andrew Morton
2007-01-29 2:52 ` Nick Piggin
2007-01-29 2:52 ` Nick Piggin
2007-01-29 9:44 ` Peter Zijlstra
2007-01-29 9:44 ` Peter Zijlstra
2007-01-30 1:31 ` Martin J. Bligh
2007-01-30 1:31 ` Martin J. Bligh
2007-01-30 1:41 ` Andrew Morton
2007-01-30 1:41 ` Andrew Morton
2007-01-30 1:49 ` Martin J. Bligh
2007-01-30 1:49 ` Martin J. Bligh
2007-01-30 2:15 ` Andrew Morton
2007-01-30 2:15 ` Andrew Morton
2007-01-31 0:44 ` David Chinner
2007-01-31 0:44 ` David Chinner
2007-01-31 1:11 ` Andrew Morton
2007-01-31 1:11 ` Andrew Morton
2007-01-31 3:22 ` David Chinner
2007-01-31 3:22 ` David Chinner
2007-02-02 12:05 ` Christoph Hellwig
2007-02-02 12:05 ` Christoph Hellwig
2007-02-02 19:24 ` Matt Mackall
2007-02-02 19:24 ` Matt Mackall
2007-02-02 23:16 ` David Chinner
2007-02-02 23:16 ` David Chinner
2007-02-02 23:14 ` David Chinner
2007-02-02 23:14 ` David Chinner
2007-01-29 19:08 ` Ingo Molnar
2007-01-29 19:08 ` Ingo Molnar
2007-01-29 19:19 ` Hugh Dickins
2007-01-29 19:19 ` Hugh Dickins
2007-01-29 19:53 ` Ingo Molnar
2007-01-29 19:53 ` Ingo Molnar
2007-01-29 20:06 ` Ingo Molnar
2007-01-29 20:06 ` Ingo Molnar
2007-01-30 2:02 ` Nick Piggin
2007-01-30 2:02 ` Nick Piggin
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