kern/139653: READ_BIG sluggish ata CD/DVD performance on HP
cowens at greatbaysoftware.com
Fri Nov 6 14:10:02 UTC 2009
The following reply was made to PR kern/139653; it has been noted by GNATS.
From: Charles Owens <cowens at greatbaysoftware.com>
To: John Baldwin <jhb at freebsd.org>
Cc: bug-followup at freebsd.org
Subject: Re: kern/139653: READ_BIG sluggish ata CD/DVD performance on HP DL360
Date: Fri, 06 Nov 2009 09:06:21 -0500
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John Baldwin wrote:
> One thing to note is that the boot loader just uses BIOS calls to load the
> kernel off of the CD, so if that is taking a long time that implies that the
> delay is in the BIOS or perhaps in the hardware at that stage. Given that,
> it may be that the CD drive in this machine is slow due to some
> controller/hardware issue. That doesn't explain the READ_BIG errors (though
> perhaps they could be related, but there isn't anything that indicates to
> prove or disprove that that I can see).
That makes sense. The biggest issue for us, though, is the post-boot
sluggishness (since that slows down the entire OS install).
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