From: Jens Axboe <axboe@suse.de>
To: Daniel Phillips <phillips@arcor.de>
Cc: David Anderson <david-anderson2003@mail.com>,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: I/O Request [Elevator; Clustering; Scatter-Gather]
Date: Tue, 4 Mar 2003 15:20:41 +0100 [thread overview]
Message-ID: <20030304142041.GA660@suse.de> (raw)
In-Reply-To: <20030304141948.264C63BF9D@mx01.nexgo.de>
On Tue, Mar 04 2003, Daniel Phillips wrote:
> On Tuesday 04 March 2003 14:50, Jens Axboe wrote:
> > > Do Clustering of request and scatter-gather mean the same ?? Confused
> > > to the core... Kindly help me ...
> >
> > No, the elevator clustering refers to clustering request that are
> > contigious on disk. Scatter-gather may cluster sg entries that are
> > contigious in memory.
>
> Hi Jens,
>
> I think you meant to write *non*contiguous in memory (but contiguous on the
> device).
No I didn't. Well actually both may happen, depending on your hardware.
What I wrote covers basic x86 hardware.
--
Jens Axboe
next prev parent reply other threads:[~2003-03-04 14:20 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-04 13:32 I/O Request [Elevator; Clustering; Scatter-Gather] David Anderson
2003-03-04 13:50 ` Jens Axboe
2003-03-04 21:10 ` Daniel Phillips
2003-03-04 14:20 ` Jens Axboe [this message]
2003-03-04 17:47 ` Bryan Henderson
2003-03-04 18:04 ` Luben Tuikov
2003-03-04 14:14 ` Scott Merritt
-- strict thread matches above, loose matches on Subject: below --
2003-03-04 14:11 David Anderson
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=20030304142041.GA660@suse.de \
--to=axboe@suse.de \
--cc=david-anderson2003@mail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=phillips@arcor.de \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.