From owner-cvs-all Thu May 23 19: 0:55 2002 Delivered-To: cvs-all@freebsd.org Received: from patrocles.silby.com (d130.as7.nwbl0.wi.voyager.net [169.207.130.68]) by hub.freebsd.org (Postfix) with ESMTP id 2C10537B400; Thu, 23 May 2002 19:00:50 -0700 (PDT) Received: from patrocles.silby.com (localhost [127.0.0.1]) by patrocles.silby.com (8.12.3/8.12.3) with ESMTP id g4O21jWW019147; Thu, 23 May 2002 21:01:45 -0500 (CDT) (envelope-from silby@silby.com) Received: from localhost (silby@localhost) by patrocles.silby.com (8.12.3/8.12.3/Submit) with ESMTP id g4O21hxv019144; Thu, 23 May 2002 21:01:44 -0500 (CDT) X-Authentication-Warning: patrocles.silby.com: silby owned process doing -bs Date: Thu, 23 May 2002 21:01:41 -0500 (CDT) From: Mike Silbersack To: Alan Cox Cc: cvs-committers@FreeBSD.org, Subject: Re: cvs commit: src/sys/vm vm_map.c vm_map.h In-Reply-To: <200205240133.g4O1XP047545@freefall.freebsd.org> Message-ID: <20020523205929.R18281-100000@patrocles.silby.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Thu, 23 May 2002, Alan Cox wrote: > alc 2002/05/23 18:33:25 PDT > > Modified files: > sys/vm vm_map.c vm_map.h > Log: > with a large number of entries. For example, the execution time > for replaying an access log from www.cs.rice.edu against the thttpd > web server was reduced by 23.5% due to the large number of files > simultaneously mmap()ed by this server. (The machine in question has > enough memory to cache most of this workload.) Wow! Have you done any benchmarks with other apps? > Nothing comes for free: At present, I see a 0.2% slowdown on "buildworld" > due to the overhead of maintaining the splay tree. I believe that > some or all of this can be eliminated through optimizations > to the code. I think a 0.2% slowdown is quite acceptable, given the speedups shown under load. Keep up the good work! Mike "Silby" Silbersack To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message