From: "Felipe Alfaro Solana" <felipe_alfaro@linuxmail.org>
To: akpm@digeo.com, "Felipe Alfaro Solana" <felipe_alfaro@linuxmail.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: anticipatory scheduling questions
Date: Sat, 01 Mar 2003 00:12:20 +0100 [thread overview]
Message-ID: <20030228231220.19048.qmail@linuxmail.org> (raw)
----- Original Message -----
From: Andrew Morton <akpm@digeo.com>
Date: Fri, 28 Feb 2003 11:14:18 -0800
To: "Felipe Alfaro Solana" <felipe_alfaro@linuxmail.org>
Subject: Re: anticipatory scheduling questions
> "Felipe Alfaro Solana" <felipe_alfaro@linuxmail.org> wrote:
> > I have done so: Evolution is a complex application with many interdependencies and is
> > not very prone to launch diagnostic messages to the console. Anyways, I haven't seen
> > any diagnostic message in the console. I still think there is something in the AS I/O scheduler
> > that is not working at full read throughput. Of course I'm no expert.
>
> It certainly does appear that way. But you observed the same runtime
> with the deadline scheduler. Or was that a typo?
>
> > > 2.4.20-2.54 -> 9s
> > > 2.5.63-mm1 w/Deadline -> 34s
> > > 2.5.63-mm1 w/AS -> 33s
It wasn't a typo... In fact, both deadline and AS give roughly the same timings (one second up or down). But I
still don't understand why 2.5 is performing so much worse than 2.4. Could a "vmstat" or "iostat" dump be
interesting?
--
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next reply other threads:[~2003-02-28 23:02 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-28 23:12 Felipe Alfaro Solana [this message]
2003-02-28 23:16 ` anticipatory scheduling questions Andrew Morton
-- strict thread matches above, loose matches on Subject: below --
2003-03-02 21:50 Felipe Alfaro Solana
2003-03-02 11:40 Felipe Alfaro Solana
2003-03-02 20:43 ` Andrew Morton
2003-03-01 14:48 Felipe Alfaro Solana
[not found] <fa.g5ol5kg.cgoq0g@ifi.uio.no>
[not found] ` <fa.hp882fv.1u0orj9@ifi.uio.no>
2003-03-01 12:48 ` Ed Tomlinson
2003-03-01 10:25 Felipe Alfaro Solana
2003-03-01 10:40 ` Andrew Morton
2003-03-01 11:51 ` David Lang
2003-03-01 17:15 ` Alan Cox
2003-02-28 14:38 Felipe Alfaro Solana
2003-02-28 19:14 ` Andrew Morton
2003-02-28 12:18 Felipe Alfaro Solana
2003-02-28 12:44 ` Andrew Morton
2003-02-27 22:24 Felipe Alfaro Solana
2003-02-27 23:26 ` Andrew Morton
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