From: Jens Axboe <axboe@suse.de>
To: Pavel Machek <pavel@suse.cz>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: ionice kills vanilla 2.6.0-test9 was [Re: [PATCH] cfq + io priorities (fwd)]
Date: Fri, 21 Nov 2003 21:14:08 +0100 [thread overview]
Message-ID: <20031121201408.GF6616@suse.de> (raw)
In-Reply-To: <20031121153900.GA193@elf.ucw.cz>
On Fri, Nov 21 2003, Pavel Machek wrote:
> Hi!
>
> > > I'm attaching the simple ionice tool. It's used as follows:
> >
> > Here's one that works, sorry about that. To compile:
> >
> > # gcc -Wall -D__X86 -o ionice ionice.c
> >
> > or other define for PPC or X86_64.
>
> Well, did that, run it on vanilla kernel, and it kills the
> machine. Can someone reproduce it?
I saw that on ppc too, btw, didn't trace it yet. But there definitely is
a problem with calling syscalls that don't exist.
> [What is needed to start using cfq? Is your patch, this utility and
> elevator=cfq enough?]
Yes, that is it. Your result may vary though, I have a newer cfq that's
almost ready for release that fixes varies performance problems.
--
Jens Axboe
next prev parent reply other threads:[~2003-11-21 20:14 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20031113124510.GZ643@openzaurus.ucw.cz>
2003-11-21 15:39 ` ionice kills vanilla 2.6.0-test9 was [Re: [PATCH] cfq + io priorities (fwd)] Pavel Machek
2003-11-21 20:14 ` Jens Axboe [this message]
2003-11-24 3:44 ` Benjamin Herrenschmidt
2003-11-21 22:45 ` Linus Torvalds
2003-11-21 23:05 ` Linus Torvalds
2003-11-21 23:33 ` Linus Torvalds
2003-11-22 11:04 ` Jamie Lokier
2003-11-22 4:42 ` Alan Modra
2003-11-26 20:06 ` Nick Clifton
2003-11-26 20:23 ` Jakub Jelinek
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