From owner-freebsd-current@FreeBSD.ORG  Wed Mar 10 20:42:31 2004
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 9E8D116A4CE
	for <freebsd-current@freebsd.org>;
	Wed, 10 Mar 2004 20:42:31 -0800 (PST)
Received: from mtaw4.prodigy.net (mtaw4.prodigy.net [64.164.98.52])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 8C2CC43D3F
	for <freebsd-current@freebsd.org>;
	Wed, 10 Mar 2004 20:42:31 -0800 (PST)
	(envelope-from kris@obsecurity.org)
Received: from obsecurity.dyndns.org
	(ed91af51fcf9fc78840cd70b416d51d2@adsl-67-119-53-203.dsl.lsan03.pacbell.net
	[67.119.53.203])
	by mtaw4.prodigy.net (8.12.10/8.12.10) with ESMTP id i2B4gTth012447;
	Wed, 10 Mar 2004 20:42:30 -0800 (PST)
Received: by obsecurity.dyndns.org (Postfix, from userid 1000)
	id 5F9F553AB2; Wed, 10 Mar 2004 20:42:29 -0800 (PST)
Date: Wed, 10 Mar 2004 20:42:29 -0800
From: Kris Kennaway <kris@obsecurity.org>
To: Conrad Sabatier <conrads@cox.net>
Message-ID: <20040311044229.GA11614@xor.obsecurity.org>
References: <XFMail.20040310213645.conrads@cox.net>
Mime-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
	protocol="application/pgp-signature"; boundary="BOKacYhQ+x31HxR3"
Content-Disposition: inline
In-Reply-To: <XFMail.20040310213645.conrads@cox.net>
User-Agent: Mutt/1.4.2.1i
cc: freebsd-current@freebsd.org
Subject: Re: I like SCHED_4BSD
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 11 Mar 2004 04:42:31 -0000


--BOKacYhQ+x31HxR3
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Wed, Mar 10, 2004 at 09:36:45PM -0600, Conrad Sabatier wrote:
> I just decided to revert to SCHED_4BSD for the time being.  Why?
>=20
> o Better interactivity -- No mouse jerkiness, no sluggish screen updates =
when
>   switching between virtual desktops, etc.
>=20
> o Better scheduling!  I'm serious here.  Watching top under SCHED_ULE, I'm
>   seeing 10, 15, 20 seconds go by where ALL processes are sleeping.=20
>   Processes seem to be spending inordinate amounts of time in the "kserel"
>   state.  This, of course, doesn't happen with SCHED_4BSD.

That this observation may well be bogus, because you're trying to
measure the scheduler using a tool that is itself run by the
scheduler, so the process stats you see may not be representative of
what is really happening on your system.

Kris
--BOKacYhQ+x31HxR3
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (FreeBSD)

iD8DBQFAT+41Wry0BWjoQKURAhC7AKCqZFWspckzBnTbkf2lMw5MV0IQBwCdG3Q9
CycgZHxMefhQyTxJvn9eHoA=
=NyGq
-----END PGP SIGNATURE-----

--BOKacYhQ+x31HxR3--