From: Andrea Arcangeli <andrea@suse.de>
To: Nick Piggin <piggin@cyberone.com.au>
Cc: Andrew Morton <akpm@digeo.com>, linux-kernel@vger.kernel.org
Subject: Re: iosched: impact of streaming read on read-many-files
Date: Fri, 21 Feb 2003 12:23:47 +0100 [thread overview]
Message-ID: <20030221112347.GR31480@x30.school.suse.de> (raw)
In-Reply-To: <3E560584.1040406@cyberone.com.au>
On Fri, Feb 21, 2003 at 09:55:00PM +1100, Nick Piggin wrote:
> There is actually a point when you have a number of other IO streams
> going on where your decreased throughput means *maximum* latency goes
> up because robin doesn't go round fast enough. I guess desktop loads
this is why it would be nice to set a prctl in the task structure that
defines the latency sensitive tasks, so you could leave enabled the CFQ
always and only xmms and mplayer would take advantage of it (unless you
run then with --skip-frame-is-ok). CFQ in function of pid is the simpler
closer transparent approximation of that.
Andrea
next prev parent reply other threads:[~2003-02-21 11:13 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-21 5:23 IO scheduler benchmarking Andrew Morton
2003-02-21 5:23 ` iosched: parallel streaming reads Andrew Morton
2003-02-21 5:24 ` iosched: effect of streaming write on interactivity Andrew Morton
2003-02-21 5:25 ` iosched: effect of streaming read " Andrew Morton
2003-02-21 5:25 ` iosched: time to copy many small files Andrew Morton
2003-02-21 5:26 ` iosched: concurrent reads of " Andrew Morton
2003-02-21 5:27 ` iosched: impact of streaming write on streaming read Andrew Morton
2003-02-21 5:27 ` iosched: impact of streaming write on read-many-files Andrew Morton
2003-02-21 5:27 ` iosched: impact of streaming read " Andrew Morton
2003-02-21 10:40 ` Andrea Arcangeli
2003-02-21 10:55 ` Nick Piggin
2003-02-21 11:23 ` Andrea Arcangeli [this message]
2003-02-21 21:11 ` Andrew Morton
2003-02-23 15:16 ` Andrea Arcangeli
2003-02-25 12:02 ` Pavel Machek
2003-02-21 5:28 ` iosched: effect of streaming read on streaming write Andrew Morton
2003-02-21 6:51 ` IO scheduler benchmarking David Lang
2003-02-21 8:16 ` Andrew Morton
2003-02-21 10:31 ` Andrea Arcangeli
2003-02-21 10:51 ` William Lee Irwin III
2003-02-21 11:08 ` Andrea Arcangeli
2003-02-21 11:17 ` Nick Piggin
2003-02-21 11:41 ` Andrea Arcangeli
2003-02-21 21:25 ` Andrew Morton
2003-02-23 15:09 ` Andrea Arcangeli
2003-02-21 11:34 ` William Lee Irwin III
2003-02-21 12:38 ` Andrea Arcangeli
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