linux-kernel - Re: how to empty buffers/cache?

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Message-ID: <20080510001124.6bc3a5c6@Varda>
Date:	Sat, 10 May 2008 00:11:24 +0200
From:	Alejandro Riveira Fernández 
	<ariveira@...il.com>
To:	Soeren Sonnenburg <kernel@....de>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: how to empty buffers/cache?

El Fri, 09 May 2008 21:49:47 +0000
Soeren Sonnenburg <kernel@....de> escribió:

> Dear all,
> 
> I am trying to perform some benchmarks that involve reading the same big
> file a couple of times from disk. However I would want to make sure that
> the file is not buffered/cached by the kernel when I read the file a
> second/third/etc time.
> 
> Is there a way (except rebooting/unmounting the disk) to clear the
> buffers?

 echo 3  > /proc/sys/vm/drop_caches IIRC

> 
> Thanks,
> Soeren
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