From owner-freebsd-questions Thu Mar 16 9:55:54 2000 Delivered-To: freebsd-questions@freebsd.org Received: from mc-qout4.whowhere.com (mc-qout4.whowhere.com [209.185.123.18]) by hub.freebsd.org (Postfix) with SMTP id 6C5E737B723 for ; Thu, 16 Mar 2000 09:55:52 -0800 (PST) (envelope-from rsnow@my-deja.com) Received: from Unknown/Local ([?.?.?.?]) by my-deja.com; Thu Mar 16 09:55:19 2000 To: freebsd-questions@freebsd.org Date: Thu, 16 Mar 2000 09:55:19 -0800 From: "Rob Snow" Message-ID: Mime-Version: 1.0 X-Sent-Mail: on X-Expiredinmiddle: true X-Mailer: MailCity Service Subject: Promise Ultra 66 and 4.0-RELEASE X-Sender-Ip: 216.62.233.218 Organization: My Deja Email (http://www.my-deja.com:80) Content-Type: text/plain; charset=us-ascii Content-Language: en Content-Length: 934 Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I have just moved and am setting up a new home fileserver, an Epox MVP3G super7 board with a AMD K6-2 350 and a pair of Maxtor 30G 7200rpm 9ms 2MB cache drives on a Promise Ultra66 dual channel controller, each drive on it's own channel. My initial test with bonnie (before vinum) showed block writes at 23MB/sec, didn't get the cpu util. Now that I have them striped together I am only seeing 25MB/sec sequential write with over 90% CPU utilization. I have a feeling that I have a problem with UDMA 66 as I feel I should get higher performance and lower CPU utilization. I have rebuilt the kernel with the ATA_DMA option (or some such, got it from LINT). Please advise on suggestions P.S. I've just moved and changed ISP's, please copy this address until I get sorted and have re-subscribed to the lists. Thanks, Rob Snow --== Sent via Deja.com http://www.deja.com/ ==-- Share what you know. Learn what you don't. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message