From owner-freebsd-questions Wed Aug 29 17:22:29 2001 Delivered-To: freebsd-questions@freebsd.org Received: from ns1.avatar.com (ns1.avatar.com [199.33.206.1]) by hub.freebsd.org (Postfix) with ESMTP id B6B1837B403 for ; Wed, 29 Aug 2001 17:22:24 -0700 (PDT) (envelope-from kory@avatar.com) Received: from tomcat (tomcat.avatar.com [199.33.206.20]) by ns1.avatar.com (8.12.0.Beta8/8.12.0.Beta8) with SMTP id f7U0JmUM002539; Wed, 29 Aug 2001 17:19:48 -0700 (PDT) From: "Kory Hamzeh" To: "Trevin Chow" , Subject: RE: Performance tuning results Date: Wed, 29 Aug 2001 17:22:00 -0700 Message-ID: <00c301c130e9$c96f1ca0$14ce21c7@avatar.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4522.1200 Importance: Normal Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG OK, I did some benchmarks and things did not come out like I thought they should. Maybe some input from more experience FBSD users might explain things. The Test System: 800 MHZ P3, 256MB Ram, 30GIG UDMA/100 EIDE Drive running 4.3 RELEASE. The Benchmark: I have a shell script that converts about 650 JPG files with an average size of 30K to JPG thumbnails with an average size of 8K. I rebooted the system before each test and entered the exact same commands. I used the "time" command and just recorded the total elapsed time. Results: IDE write caching off, softupdates off: 51.97 secs IDE Write caching on, softupdates off: 47.39 secs IDE Write caching off, softupdates on: 50.46 secs IDE Write caching on, softupdates on: 47.32 secs What's interesting is that IDE write caching helped more than the softupdates. Kory To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message