Date: Mon, 15 Sep 1997 00:01:43 -0700 From: Amancio Hasty <hasty@rah.star-gate.com> To: "Michael L. VanLoon -- HeadCandy.com" <michaelv@MindBender.serv.net> Cc: "John S. Dyson" <toor@dyson.iquest.net>, tm@blom.co.id, current@FreeBSD.ORG Subject: Re: FYI: Interesting IDE-Ultra/33 results Message-ID: <199709150701.AAA00660@rah.star-gate.com> In-Reply-To: Your message of "Sun, 14 Sep 1997 21:30:39 PDT." <199709150430.VAA04430@MindBender.serv.net>
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The other issue is error correction... Amancio >From The Desk Of "Michael L. VanLoon -- HeadCandy.com" : > > [...] > >For those who might try to blow off the transfer rate issue, > >remember that slow transfers can add to the latency of a I/O > >transfer request. The faster the transfer rate from the drive, the > >shorter the channel will be busy, and the quicker the total > >response time can be. As I commented on earlier though, my > [...] > > However, there's more than one way to minimize command overhead. > Which is why tagged-command-queuing is so important for SCSI > performance, allowing multiple commands to be queued with minimal > additional overhead. > > I'm not minimizing the results above -- they are impressive. However, > I don't think that particular command overhead test completely > accounts for all the subtleties of this issue. > > ----------------------------------------------------------------------------- > Michael L. VanLoon michaelv@MindBender.serv.net > Contract software development for Windows NT, Windows 95 and Unix. > Windows NT and Unix server development in C++ and C. > > --< Free your mind and your machine -- NetBSD free un*x >-- > NetBSD working ports: 386+PC, Mac 68k, Amiga, Atari 68k, HP300, Sun3, > Sun4/4c/4m, DEC MIPS, DEC Alpha, PC532, VAX, MVME68k, arm32... > NetBSD ports in progress: PICA, others... > -----------------------------------------------------------------------------
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