From owner-freebsd-scsi  Sun Mar 21 14: 0: 5 1999
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Date: Sun, 21 Mar 1999 12:54:23 -0800 (PST)
From: Tom <tom@sdf.com>
To: Greg Lehey <grog@lemis.com>
Cc: Nick Hilliard <nick@iol.ie>, freebsd-scsi@FreeBSD.ORG
Subject: Re: dpt raid-5 performance
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On Sun, 21 Mar 1999, Greg Lehey wrote:

> > FreeBSD will likely never send IOs big enough for the strip size of
> > 512kb to ever be useful.
> 
> It does.  The largest I/O transfer is 64 kB.  You don't want to
> fragment requests, because that increases the I/O load on the array.

  At the cost of single-process performance.

Tom



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