Date: Mon, 9 Jun 1997 23:21:59 -0700 (PDT) From: Tom <tom@uniserve.com> To: "Michael L. VanLoon -- HeadCandy.com" <michaelv@MindBender.serv.net> Cc: Satoshi Asami <asami@cs.berkeley.edu>, burton@bsampley.vip.best.com, current@FreeBSD.ORG Subject: Re: overclocking Message-ID: <Pine.BSF.3.96.970609230318.21828A-100000@shell.uniserve.com> In-Reply-To: <199706100458.VAA14947@MindBender.serv.net>
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On Mon, 9 Jun 1997, Michael L. VanLoon -- HeadCandy.com wrote: > >However, I suggest you invest some money on SCSI drives before you > >even try overclocking. (Get the 8ms/7,200rpm variants too -- > >10ms/5,400rpm won't do much better.) The bottleneck of your machine > >during compilation should be the disks, not the CPU. > > Satoshi! Shame on you... > > Haven't you learned anything from our friend Joe Greco?? > > You're betting off buying two 2GB 5400RPM drives and striping them > with ccd, than buying one 4GB 7200RPM drive. You *will* get better > performance in almost all benchmarks, and most real-world use. > > I'm surprised, especially after Jordan's recent conversion to this > religion, trumpets blaring loudly and all. > > Trust me. Stripe your drives. It's worth it. A couple of issues: - The best quality drives are 7200rpm only - Striping two 7200rpm drives is even better than striping two 5400rpm drives - Putting /usr/src and /usr/obj on separate drives is probably better than stripping, because you know that accesses will happen in parallel. But again, this is optimization specific to world building, not general-use systems. - Striping is not going to improve seek performance As far as Joe Greco goes, he has been huge proponent of using large numbers of 5400rpm, but that's his opinion. I prefer fewer, but faster drives. I don't believe Joe has ever tried building a system with mostly 7200rpm drives. Anyways, I get a newsfeed from Joe, and provide some charity feeds to some ISPs... Anyways, I won't get anything but 7200rpm drives these days, but I also need all the performance I can get. > ----------------------------------------------------------------------------- > Michael L. VanLoon michaelv@MindBender.serv.net > --< 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... > ----------------------------------------------------------------------------- > Tom
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