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From: Dipankar Sarma <dipankar@in.ibm.com>
To: William Lee Irwin III <wli@holomorphy.com>,
	Andrew Morton <akpm@digeo.com>,
	lkml <linux-kernel@vger.kernel.org>,
	"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: 2.5.38-mm3
Date: Thu, 26 Sep 2002 18:35:58 +0530	[thread overview]
Message-ID: <20020926183558.D18906@in.ibm.com> (raw)
In-Reply-To: <20020926124244.GO3530@holomorphy.com>; from wli@holomorphy.com on Thu, Sep 26, 2002 at 05:42:44AM -0700

On Thu, Sep 26, 2002 at 05:42:44AM -0700, William Lee Irwin III wrote:
> This is only aggravated by cacheline bouncing on SMP. The reductions
> of system cpu time will doubtless be beneficial for all.

On SMP, I would have thought that only sharing the fd table
while cloning tasks (CLONE_FILES) affects performance by bouncing the rwlock
cache line. Are there a lot of common workloads where this happens ?

Anyway the files_struct_rcu patch for 2.5.38 is up at
http://sourceforge.net/project/showfiles.php?group_id=8875&release_id=112473

Thanks
-- 
Dipankar Sarma  <dipankar@in.ibm.com> http://lse.sourceforge.net
Linux Technology Center, IBM Software Lab, Bangalore, India.

  reply	other threads:[~2002-09-26 12:55 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-09-26  7:57 2.5.38-mm3 Andrew Morton
2002-09-26 12:24 ` 2.5.38-mm3 Dipankar Sarma
2002-09-26 12:29   ` 2.5.38-mm3 William Lee Irwin III
2002-09-26 12:40     ` 2.5.38-mm3 Dipankar Sarma
2002-09-26 12:42       ` 2.5.38-mm3 William Lee Irwin III
2002-09-26 13:05         ` Dipankar Sarma [this message]
2002-09-26 13:17           ` 2.5.38-mm3 William Lee Irwin III
2002-09-26 13:29         ` 2.5.38-mm3 Zwane Mwaikambo
2002-09-26 13:39           ` 2.5.38-mm3 William Lee Irwin III
2002-09-26 13:46             ` 2.5.38-mm3 Zwane Mwaikambo
2002-09-27  8:27             ` 2.5.38-mm3 Dipankar Sarma
2002-09-27  9:20               ` 2.5.38-mm3 William Lee Irwin III
2002-09-27  9:58                 ` 2.5.38-mm3 Dipankar Sarma
2002-09-27 15:04                   ` 2.5.38-mm3 Martin J. Bligh
2002-09-27 17:14                     ` 2.5.38-mm3 Dipankar Sarma
2002-09-27 22:54                       ` 2.5.38-mm3 William Lee Irwin III
2002-09-28  5:41                         ` 2.5.38-mm3 Dipankar Sarma
2002-09-28  4:35                   ` 2.5.38-mm3 Zwane Mwaikambo
2002-09-28  4:36                     ` 2.5.38-mm3 William Lee Irwin III
2002-09-28  4:54                       ` 2.5.38-mm3 Zwane Mwaikambo
2002-09-28  5:29                         ` 2.5.38-mm3 Dipankar Sarma
2002-09-28  4:30                 ` 2.5.38-mm3 Zwane Mwaikambo

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