From: Bruce Harada <bruce@ask.ne.jp>
To: "paradox3" <paradox3@maine.rr.com>
Cc: linux-kernel@vger.kernel.org, linux-smp@vger.kernel.org
Subject: Re: Poor SCSI drive performance on SMP machine, 2.2.16
Date: Sun, 28 Jan 2001 17:40:16 +0900 [thread overview]
Message-ID: <20010128174016.3fba71ad.bruce@ask.ne.jp> (raw)
In-Reply-To: <003f01c088fb$a35c06e0$b001a8c0@caesar>
In-Reply-To: <003f01c088fb$a35c06e0$b001a8c0@caesar>
Hi.
Do you get messages like the ones below in /var/log/messages?
sym53c875-0-<0,0>: QUEUE FULL! 8 busy, 7 disconnected CCBs
sym53c875-0-<0,0>: tagged command queue depth set to 7
In fact, do you get any messages in your log files that look like they
might be related?
--
Bruce Harada
bruce@ask.ne.jp
On Sun, 28 Jan 2001 02:26:32 -0500
"paradox3" <paradox3@maine.rr.com> wrote:
> I have an SMP machine (dual PII 400s) running 2.2.16 with one 10,000 RPM
> IBM
> 10 GB SCSI drive
> (AIC 7890 on motherboard, using aic7xxx.o), and four various IDE drives.
> The
> SCSI drive
> performs the worst. In tests of writing 100 MB and sync'ing, one of my
> IDE
> drives takes 31 seconds. The SCSI drive (while doing nothing else) took
> 2 minutes, 10 seconds. This is extremely noticable in file transfers
> that
> completely
> monopolize the SCSI drive, and are much slower than when involving the
> IDE
> drives.
> After a large data operation on the SCSI drive, the system will hang for
> several minutes.
> Anyone know what could be causing this? Thanks.
>
> Attached are some data to help.
>
>
> Thanks,
> Para-dox (paradox3@maine.rr.com)
>
>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/
next prev parent reply other threads:[~2001-01-28 8:40 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-28 7:26 paradox3
2001-01-28 7:48 ` Andre Hedrick
2001-01-28 8:40 ` Bruce Harada [this message]
2001-01-28 17:44 ` paradox3
2001-01-28 23:50 ` Johan Kullstam
2001-01-28 19:31 ` Bruce Harada
2001-01-28 19:52 ` paradox3
2001-01-28 19:56 ` paradox3
2001-01-28 11:12 ` Gérard Roudier
2001-01-28 22:57 paradox3
[not found] <F65Jqj0CYixMwInhdAH00002ef1@hotmail.com>
2001-01-29 5:02 ` paradox3
2001-01-29 12:58 ` Johan Kullstam
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=20010128174016.3fba71ad.bruce@ask.ne.jp \
--to=bruce@ask.ne.jp \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-smp@vger.kernel.org \
--cc=paradox3@maine.rr.com \
/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®