From owner-freebsd-current Sun Jul 26 03:17:47 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id DAA05028 for freebsd-current-outgoing; Sun, 26 Jul 1998 03:17:47 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from news1.gtn.com (news1.gtn.com [192.109.159.3]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id DAA04982 for ; Sun, 26 Jul 1998 03:17:01 -0700 (PDT) (envelope-from andreas@klemm.gtn.com) Received: (from uucp@localhost) by news1.gtn.com (8.8.6/8.8.6) with UUCP id MAA16090; Sun, 26 Jul 1998 12:15:07 +0200 (MET DST) Received: (from andreas@localhost) by klemm.gtn.com (8.8.8/8.8.8) id LAA06566; Sun, 26 Jul 1998 11:24:01 +0200 (CEST) (envelope-from andreas) Message-ID: <19980726112401.A5570@klemm.gtn.com> Date: Sun, 26 Jul 1998 11:24:01 +0200 From: Andreas Klemm To: dg@root.com, Brian Feldman Cc: freebsd-current@FreeBSD.ORG Subject: Re: New LINT options: what is VM coloring? References: <199807260010.RAA27997@implode.root.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.93.1i In-Reply-To: <199807260010.RAA27997@implode.root.com>; from David Greenman on Sat, Jul 25, 1998 at 05:10:54PM -0700 X-Disclaimer: A free society is one where it is safe to be unpopular X-Operating-System: FreeBSD 3.0-CURRENT SMP Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sat, Jul 25, 1998 at 05:10:54PM -0700, David Greenman wrote: > Page coloring is the process of allocating pages that have physical > alignment that provides optimal utilization of the memory cache. This can > be a big win for direct-mapped caches (e.g. most Pentium L2 caches), but > loses effectiveness with set-associative caches (e.g. Pentium Pro, which > has a set size of 4). Do you think it would be better to turn PQ off using: options PQ_NOOPT # No coloring -- Andreas Klemm http://www.FreeBSD.ORG/~andreas What gives you 90% more speed, for example, in kernel compilation ? http://www.FreeBSD.ORG/~fsmp/SMP/akgraph-a/graph1.html "NT = Not Today" (Maggie Biggs) ``powered by FreeBSD SMP'' To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message