Date: Thu, 21 Sep 2000 07:08:37 -0700 From: Stephen Byan <Stephen.Byan@quantum.com> To: "'Marius Bendiksen'" <mbendiks@eunet.no>, Stephen Byan <Stephen.Byan@quantum.com> Cc: "'Soren Schmidt'" <sos@freebsd.dk>, fs@FreeBSD.ORG, sos@FreeBSD.ORG, freeBSD-scsi@FreeBSD.ORG Subject: RE: disable write caching with softupdates? Message-ID: <8133266FE373D11190CD00805FA768BF055BD1D6@shrcmsg1.tdh.qntm.com>
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Marius Bendiksen [mailto:mbendiks@eunet.no] wrote: > > Contrast this 10% performance hit versus what you get when > you disable > > caching entirely. > > I think you will see that on some drives, this may have a greater > performance impact than not caching at all. Perhaps Søren will be kind enough to run the experiment? I'd be interested in analyzing cases in ATA drives where flushing delivers worse performance than disabling cache. Regards, -Steve To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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