From: Jakob Oestergaard <jakob@unthought.net>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Jens Axboe <jens.axboe@oracle.com>,
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 15:37:41 +0200 [thread overview]
Message-ID: <20061018133740.GZ23492@unthought.net> (raw)
In-Reply-To: <4536245B.8070906@yahoo.com.au>
On Wed, Oct 18, 2006 at 10:55:55PM +1000, Nick Piggin 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?).
>
> It is still far from perfect, but at least it accounts for seeks vs
> throughput reasonably well, and in a device independent manner.
Yup - it makes sense.
It would make very good sense (to me at least) if you can say "give me
at least 100msec every 1sec", as was already suggested. That would take
care of the latency problem too.
--
/ jakob
next prev parent reply other threads:[~2006-10-18 13:37 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
2006-10-18 13:51 ` Paulo Marques
2006-10-19 12:22 ` Jens Axboe
2006-10-18 13:37 ` Jakob Oestergaard [this message]
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
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