Date: Wed, 04 Mar 1998 17:37:49 -0800 From: Mike Smith <mike@smith.net.au> To: shimon@simon-shapiro.org Cc: Remy NONNENMACHER <remy@synx.com>, hackers@FreeBSD.org, Terry Lambert <tlambert@primenet.com> Subject: Re: Disk write caches Message-ID: <199803050137.RAA23401@dingo.cdrom.com> In-Reply-To: Your message of "Wed, 04 Mar 1998 17:35:56 PST." <XFMail.980304173556.shimon@simon-shapiro.org>
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> > Not sure IMHO. Typical wait time before write starts is 20 to 50 ms or > > half the internal disk buffers. Far less than sync daemon. > > Get a caching controller, they start at $250.00 for IDE ones. I measure > 2us or less for a cache hit to such controller. Do you know of any that do DMA? That'd be something *very* much worth supporting. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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