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

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

             reply	other threads:[~2010-05-19 22:00 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-19 22:00 Mathieu Desnoyers [this message]
2010-05-20  2:11 ` [RELEASE] ltt-control 0.86, better streaming fadvise Mathieu Desnoyers

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