Date: Sat, 5 May 2001 17:53:20 -0600 (Mountain Daylight Time) From: Charlie Watts <cewatts@frontier.net> To: Jan Mikkelsen <janm@transactionware.com> Cc: Doug Russell <drussell@saturn-tech.com>, Matt Dillon <dillon@earth.backplane.com>, freebsd-stable <freebsd-stable@FreeBSD.ORG> Subject: Re: soft update should be default Message-ID: <Pine.WNT.4.33.0105051751530.1188-100000@eggplant.frontier.net> In-Reply-To: <00b601c0d5bd$42ba1340$0901a8c0@haym.transactionsite.com>
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On Sun, 6 May 2001, Jan Mikkelsen wrote: > Good write speed is possible without using write cache by using tagged > command queueing. Have you measured tagged command queueing vs. write cache > for write speed on your SCSI drives? I get about the same (~23MB/sec) on an > IBM DLTA-307030 Ultra ATA drive (tags/no WC vs. no tags/WC). With neither > option, it is terrible, of course. I see the same behaviour on one of those disks, too. But - aren't IBM's DTLA-series disks the only IDE drives that support TCQ? [ It's a -very- SCSI-feeling feature, in my mind. ] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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