linux-kernel - [RELEASE] ltt-control 0.85, lighter page cache use

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Message-ID: <20100519220015.GA8028@Krystal>
Date:	Wed, 19 May 2010 18:00:15 -0400
From:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To:	ltt-dev@...ts.casi.polymtl.ca
Cc:	linux-kernel@...r.kernel.org
Subject: [RELEASE] ltt-control 0.85, lighter page cache use

Hi,

I just released ltt-control 0.85 which waits for previous subbuffers to be
written to disk (using sync_file_range()) and uses fadvise to tell the kernel
that pages won't be reaccessed. This lessens the tracer impact on the page
cache.

Thanks to Linus for hints on how to use fadvise and sync_file_range to do
this, c.f.:

http://marc.info/?l=linux-kernel&m=127430576309253&w=2

Mathieu

-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
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