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Date:      Fri, 13 Feb 2009 13:27:20 -0600
From:      Josh Paetzel <josh@tcbug.org>
To:        Ivan Voras <ivoras@freebsd.org>
Cc:        freebsd-performance@freebsd.org, Antony Mawer <fbsd-performance@mawer.org>
Subject:   Re: FreeBSD 7.1 disk performance issue on ESXi 3.5
Message-ID:  <666B517C-6E30-465D-8BAD-B6266C4D3743@tcbug.org>
In-Reply-To: <9bbcef730902111102j5ef13491md4aa887de83e55f4@mail.gmail.com>
References:  <499165F3.6050803@sebster.com> <gms1i4$3vq$1@ger.gmane.org> <49918DA6.4020608@sebster.com> <49918E0A.1060500@sebster.com> <gms3sl$ctv$1@ger.gmane.org> <49927151.2030100@mawer.org> <9bbcef730902111102j5ef13491md4aa887de83e55f4@mail.gmail.com>

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On Feb 11, 2009, at 1:02 PM, Ivan Voras wrote:

<snip>
>
>
> As previously demonstrated by me and others, Linux usually has
> significantly better file system performance in the non-virtualized
> case, so the difference could be simply increased by the
> virtualization.


In my limited experience with VMWare linux seems to have near bare  
metal disk performance.  FreeBSD seems to incur a significant  
performance penalty.  For instance on my laptop, running OSX and  
VMWare Fusion, FreeBSd virtual machines can't saturate 100TX off the  
disk, raw dd manages about 7 Megs/sec, which is in line with what I  
get shovelling big files around.   Disk is a 7200 RPM SATA2.

Thanks,

Josh Paetzel




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