Date: Mon, 03 Feb 2003 10:09:25 +1100 From: David Burren <david@burren.cx> To: bv@wjv.com Cc: stable@freebsd.org Subject: Re: at33 vs others? Message-ID: <51253.1044227365@burren.cx> In-Reply-To: Message from Bill Vermillion <bv@wjv.com> of "Sun, 02 Feb 2003 17:24:37 CDT." <20030202222437.GA83950@wjv.com>
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> I just updated an iNTEL 1100R rack mount from an ATA33 [don't > recall the drive] to a Promise 100/133 controller and a Maxtor > 120GB 7200 RPM ATA133 I saw significant increase. Yes ATA133 can be faster as it removes one bottleneck, but the drive will be making a big difference too. The 7200 RPM of the Maxtor will be boosting the transfer rate, and the larger buffer, (possibly) different buffer management in the firmware, and (presumably) lower seek times of the disk will all be contributing. The position of the filesystem partition on the drive and the fresh filesystem will also affect the result. Your numbers are not a true indication of the advantages of ATA133. Try connecting the drive with an ATA33 cable to drop the bus speed back and do your test again. That would be a better comparison. But then you might not care that much. Your system is significantly faster than it was, and that's probably the bottom line for most people. :-) __ David B To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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