From owner-freebsd-hackers Mon Jun 26 9:58:17 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from majordomo2.umd.edu (majordomo2.umd.edu [128.8.10.7]) by hub.freebsd.org (Postfix) with ESMTP id AB0BE37BBA9 for ; Mon, 26 Jun 2000 09:58:09 -0700 (PDT) (envelope-from culverk@wam.umd.edu) Received: from rac5.wam.umd.edu (root@rac5.wam.umd.edu [128.8.10.145]) by majordomo2.umd.edu (8.9.3/8.9.3) with ESMTP id MAA27907; Mon, 26 Jun 2000 12:58:06 -0400 (EDT) Received: from rac5.wam.umd.edu (sendmail@localhost [127.0.0.1]) by rac5.wam.umd.edu (8.9.3/8.9.3) with SMTP id MAA11606; Mon, 26 Jun 2000 12:58:07 -0400 (EDT) Received: from localhost (culverk@localhost) by rac5.wam.umd.edu (8.9.3/8.9.3) with ESMTP id MAA11602; Mon, 26 Jun 2000 12:58:07 -0400 (EDT) X-Authentication-Warning: rac5.wam.umd.edu: culverk owned process doing -bs Date: Mon, 26 Jun 2000 12:58:07 -0400 (EDT) From: Kenneth Wayne Culver To: Arun Sharma Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: VM coloring description in NOTES In-Reply-To: <20000626095345.A7344@sharmas.dhs.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Alright, well that makes sense.. I guess it speeds things up some too? (I had it enabled for a while, but didn't notice a difference). ================================================================= | Kenneth Culver | FreeBSD: The best NT upgrade | | Unix Systems Administrator | ICQ #: 24767726 | | and student at The | AIM: muythaibxr | | The University of Maryland, | Website: (Under Construction) | | College Park. | http://www.wam.umd.edu/~culverk/| ================================================================= On Mon, 26 Jun 2000, Arun Sharma wrote: > On Mon, Jun 26, 2000 at 12:50:41PM -0400, Kenneth Wayne Culver wrote: > > Just curious because I have no experience in this area... but what exactly > > does cache coloring get us... I've never actually gotten a really straight > > answer on this... Thanks > > Read Curt Schimmel's book UNIX systems for modern architectures for an > answer. > > Basically, it ensures that if P1 and P2 are two pages that are allocated > successively (temporal locality), then the first cache line in P1 and > the first cache line in P2 do not compete with each other for the L2 cache. > > -Arun > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message