linux-kernel - Re: Limits of the 965 chipset & 3 PCI-e cards/southbridge? ~774MiB/s peak for read, ~650MiB/s peak for write?

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Message-ID: <13c501c8c3ee$c6a31318$330ef40a@exchange.rackspace.com>
Date:	Sun, 1 Jun 2008 8:52:00 -0500
From:	"David Lethe" <david@...tools.com>
To:	"Justin Piszcz" <jpiszcz@...idpixels.com>,
	<linux-kernel@...r.kernel.org>, <linux-raid@...r.kernel.org>,
	<xfs@....sgi.com>
Subject: Re: Limits of the 965 chipset & 3 PCI-e cards/southbridge? ~774MiB/s peak for read, ~650MiB/s peak for write?



-----Original Message-----

From:  "Justin Piszcz" <jpiszcz@...idpixels.com>
Subj:  Re: Limits of the 965 chipset & 3 PCI-e cards/southbridge? ~774MiB/s peak for read, ~650MiB/s peak for write?
Date:  Sun Jun 1, 2008 6:02 am
Size:  793 bytes
To:  "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>; "linux-raid@...r.kernel.org" <linux-raid@...r.kernel.org>; "xfs@....sgi.com" <xfs@....sgi.com>

 
On Sun, 1 Jun 2008, Justin Piszcz wrote: 
 
> I have 12 enterprise-class seagate 1TiB disks on a 965 desktop board and it  
> appears I have hit the limit, if I were able to get the maximum speed of all  
> drives, ~70MiB/avg * 12 = 840MiB/s but it seems to stop aound 774 MiB/s  
> (currently running badblocks on all drives).. 
 
Small correction, they are 7200.11 Seagate Desktop Drives (ST31000340AS),  
not enterprise drives: 
 
http://www.seagate.com/ww/v/index.jsp?vgnextoid=0732f141e7f43110VgnVCM100000f5ee0a0aRCRD 
http://www.newegg.com/Product/Product.aspx?Item=N82E16822148274 
 
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