From: "Justin T. Gibbs" <gibbs@scsiguy.com>
To: e-double@iname.com
Cc: linux-kernel@vger.kernel.org, eweinstein@cya.com
Subject: Re: AIC7XXX oddities
Date: Tue, 10 Apr 2001 06:32:40 -0600 [thread overview]
Message-ID: <200104101232.f3ACWes28977@aslan.scsiguy.com> (raw)
In-Reply-To: Your message of "Mon, 09 Apr 2001 23:14:29 EDT." <0104092314299F.00428@weba8.iname.net>
>An invocation of hdparm -Tt /dev/sda (id 5) does this:
>
>(scsi1:A:1): 5.000MB/s transfers (5.000MHz, offset 15)
>(scsi1:A:6): 20.000MB/s transfers (20.000MHz, offset 15)
>(scsi0:A:5): 3.300MB/s transfers
The situation might be clearer if you run with aic7xxx=verbose.
My guess is that the target detected a CRC error a transaction
and negotiated async as an indication that the initiator should
perform domain validation on this bus segment again. Unfortunatly,
the driver doesn't yet support domain validation, so you end up
being stuck at 3.3MB/s. I would suggest looking for problems with
your cabling or termination on that controller.
--
Justin
prev parent reply other threads:[~2001-04-10 12:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-10 3:14 e-double
2001-04-10 12:32 ` Justin T. Gibbs [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=200104101232.f3ACWes28977@aslan.scsiguy.com \
--to=gibbs@scsiguy.com \
--cc=e-double@iname.com \
--cc=eweinstein@cya.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®