From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261270AbVHCVSs (ORCPT ); Wed, 3 Aug 2005 17:18:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261409AbVHCVSq (ORCPT ); Wed, 3 Aug 2005 17:18:46 -0400 Received: from mail10.syd.optusnet.com.au ([211.29.132.191]:28333 "EHLO mail10.syd.optusnet.com.au") by vger.kernel.org with ESMTP id S261270AbVHCVS0 (ORCPT ); Wed, 3 Aug 2005 17:18:26 -0400 From: Con Kolivas To: Jim MacBaine Subject: Re: [PATCH] i386 No-Idle-Hz aka Dynamic-Ticks 3 Date: Thu, 4 Aug 2005 07:16:21 +1000 User-Agent: KMail/1.8.2 Cc: linux-kernel@vger.kernel.org, ck@vds.kolivas.org, tony@atomide.com, tuukka.tikkanen@elektrobit.com References: <200508031559.24704.kernel@kolivas.org> <3afbacad05080312201d388f8e@mail.gmail.com> In-Reply-To: <3afbacad05080312201d388f8e@mail.gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart7645559.zjMdlOdnWq"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200508040716.24346.kernel@kolivas.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --nextPart7645559.zjMdlOdnWq Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Thu, 4 Aug 2005 05:20, Jim MacBaine wrote: > On 8/3/05, Con Kolivas wrote: > > This is the dynamic ticks patch for i386 as written by Tony Lindgen > > and Tuukka Tikkanen . > > Patch for 2.6.13-rc5 > > > > There were a couple of things that I wanted to change so here is an > > updated version. This code should have stabilised enough for general > > testing now. > > Runs very well here on a (noname) laptop, even with apic timer, the > desktop does not "feel" different from static 1000HZ.=20 I did find performance dropped off substantially in interbench but usually= =20 below the human perceptible range. Real time performance dropped off=20 substantially, but is back to mainline performance when disabled (ie config= =20 on but disabled at runtime/boottime). > But dtck=20 > reproducibly breaks software-suspend2; the kernel will simply stall on > resume. Also stalls with dyntick=3Dnoapic. As soon as I set > CONFIG_NO_IDLE_HZ =3D n, resume works again. What happens when you disable it at runtime before suspending? echo 0 > /sys/devices/system/dyn_tick/dyn_tick0/enable Cheers, Con --nextPart7645559.zjMdlOdnWq Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQBC8TQoZUg7+tp6mRURAqlTAJ4zlUXVNA6LgipsHeeQIMluWfl7WgCfVBep XdYpF2kGL7kytNcTQr25gpk= =0ZKh -----END PGP SIGNATURE----- --nextPart7645559.zjMdlOdnWq--