Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030350AbWI1XS1 (ORCPT ); Thu, 28 Sep 2006 19:18:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030226AbWI1XS0 (ORCPT ); Thu, 28 Sep 2006 19:18:26 -0400 Received: from out1.smtp.messagingengine.com ([66.111.4.25]:8425 "EHLO out1.smtp.messagingengine.com") by vger.kernel.org with ESMTP id S1750826AbWI1XSZ (ORCPT ); Thu, 28 Sep 2006 19:18:25 -0400 X-Sasl-enc: NUqhLUWM2khHWy2a3JvT5Ctme8KEbMjyGgMo9PVRHKmC 1159485506 Message-ID: <451C58AC.5060601@imap.cc> Date: Fri, 29 Sep 2006 01:20:12 +0200 From: Tilman Schmidt Organization: me - organized?? User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; de-AT; rv:1.8.0.6) Gecko/20060729 SeaMonkey/1.0.4 Mnenhy/0.7.4.666 MIME-Version: 1.0 To: Andi Kleen CC: Andrew Morton , linux-kernel@vger.kernel.org, Ingo Molnar , jbeulich@novell.com Subject: Re: [2.6.18-rc7-mm1] slow boot References: <4516B966.3010909@imap.cc> <20060924145337.ae152efd.akpm@osdl.org> <451BFFA9.4030000@imap.cc> <200609281912.01858.ak@suse.de> In-Reply-To: <200609281912.01858.ak@suse.de> X-Enigmail-Version: 0.94.1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigA1C256E1DBCD461B4D574C61" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2238 Lines: 70 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigA1C256E1DBCD461B4D574C61 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: quoted-printable Am 28.09.2006 19:12 schrieb Andi Kleen: > On Thursday 28 September 2006 19:00, Tilman Schmidt wrote: >=20 > missing context here, but ... Forwarded by separate mail. >> x86_64-mm-i386-stacktrace-unwinder.patch [...] >> Backing out just this patch from 2.6.18-mm1 (and resolving conflicts >> manually the obvious way) gets the boot time back to normal (ie. as >> fast as 2.6.18 mainline) on my >> Linux gx110 2.6.18-mm1-noinitrd #2 PREEMPT Thu Sep 28 18:48:32 CEST 20= 06 i686 i686 i386 GNU/Linux >> machine. >=20 > Hmm, i assume you have lockdep on. Indeed. > The new backtracer is of course slower > than the old one and it will slow down lockdep which takes a lot of bac= ktraces.=20 > But it shouldn't be a significant slowdown. Unfortunately, it is. Boot time roughly doubles from 39 to 76 secs. > Can you perhaps boot with profile=3D1 and then send readprofile output = after > boot? I'm afraid I'll need instructions for that. I assume "profile=3D1" is to be appended to the kernel command line; but how do I retrieve that readprofile output you are asking for? Thanks Tilman --=20 Tilman Schmidt E-Mail: tilman@imap.cc Bonn, Germany Diese Nachricht besteht zu 100% aus wiederverwerteten Bits. Ungeoeffnet mindestens haltbar bis: (siehe Rueckseite) --------------enigA1C256E1DBCD461B4D574C61 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3rc1 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFHFisMdB4Whm86/kRAr7eAJ9bhaC6yST1Cj9VStOqbTLY1f1ESACdHAnT qM8f5XwIcRZzGRX6nDaH9bg= =dwg3 -----END PGP SIGNATURE----- --------------enigA1C256E1DBCD461B4D574C61-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/