From: Jakob Oestergaard <jakob@unthought.net>
To: Jens Axboe <jens.axboe@oracle.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Arjan van de Ven <arjan@infradead.org>,
"Phetteplace, Thad (GE Healthcare,
consultant)" <Thad.Phetteplace@ge.com>,
linux-kernel@vger.kernel.org
Subject: Re: Bandwidth Allocations under CFQ I/O Scheduler
Date: Wed, 18 Oct 2006 15:39:33 +0200 [thread overview]
Message-ID: <20061018133933.GA23492@unthought.net> (raw)
In-Reply-To: <20061018130456.GJ24452@kernel.dk>
On Wed, Oct 18, 2006 at 03:04:57PM +0200, Jens Axboe wrote:
...
> > So you could say you want your database to consume no more than 50%
> > of disk and have your mp3 player get a minimum of 10%. Of course,
> > that doesn't say anything about what the time slices are, or what
> > latencies you can expect (1s out of every 10, or 100ms out of every
> > 1000?).
>
> As I wrote previously, both a percentage and bandwidth along with
> desired latency make sense.
The fundamental problem I see, is, that while you can easily measure and
limit the bandwidth, you cannot really make bandwidth guarantees.
All the rest sounds great in my ears :)
--
/ jakob
next prev parent reply other threads:[~2006-10-18 13:39 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-16 20:46 Bandwidth Allocations under CFQ I/O Scheduler Phetteplace, Thad (GE Healthcare, consultant)
2006-10-17 1:24 ` Arjan van de Ven
2006-10-17 13:23 ` Jens Axboe
2006-10-17 14:37 ` Ric Wheeler
2006-10-17 14:47 ` Jens Axboe
2006-10-17 14:46 ` Phetteplace, Thad (GE Healthcare, consultant)
2006-10-18 8:00 ` Jakob Oestergaard
2006-10-18 9:40 ` Arjan van de Ven
2006-10-18 11:30 ` Jakob Oestergaard
2006-10-18 11:49 ` Jens Axboe
2006-10-18 12:23 ` Jakob Oestergaard
2006-10-18 12:42 ` Alan Cox
2006-10-18 12:44 ` Jens Axboe
2006-10-18 12:55 ` Nick Piggin
2006-10-18 13:04 ` Jens Axboe
2006-10-18 13:39 ` Jakob Oestergaard [this message]
2006-10-18 13:51 ` Paulo Marques
2006-10-19 12:22 ` Jens Axboe
2006-10-18 13:37 ` Jakob Oestergaard
2006-10-18 12:44 ` Jakob Oestergaard
2006-10-18 12:42 ` Jens Axboe
2006-10-18 13:35 ` Jakob Oestergaard
2006-10-18 9:51 ` Jens Axboe
2006-10-18 11:00 ` Helge Hafting
2006-10-18 11:14 ` Jens Axboe
2006-10-18 11:23 ` Ric Wheeler
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=20061018133933.GA23492@unthought.net \
--to=jakob@unthought.net \
--cc=Thad.Phetteplace@ge.com \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=arjan@infradead.org \
--cc=jens.axboe@oracle.com \
--cc=linux-kernel@vger.kernel.org \
--cc=nickpiggin@yahoo.com.au \
/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.