linux-kernel - Re: SATA-performance: Linux vs. FreeBSD

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Date:	Tue, 13 Feb 2007 11:09:46 -0800
From:	Jeff Carr <basilarchia@...il.com>
To:	"Martin A. Fink" <fink@....mpg.de>
CC:	linux-kernel@...r.kernel.org
Subject: Re: SATA-performance: Linux vs. FreeBSD

On 02/12/07 08:37, Martin A. Fink wrote:

> :~> strace -c -T -o trace.out dd if=/dev/zero of=test.txt bs=10MB count=200
> 
> 200+0 Datensätze ein
> 200+0 Datensätze aus
> 2000000000 bytes (2,0 GB) copied, 52,8632 seconds, 37,8 MB/s

You might want to check the raw write & read speed to the device
without a filesystem. Also, your previous email didn't include xfs.
xfs has very good sustained write performance.

dd if=/dev/zero of=/dev/sdX bs=10MB count=200
dd of=/dev/null if=/dev/sdX bs=10MB count=200
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