Date: Mon, 28 Aug 2000 21:52:37 -0500 From: Tony Johnson <gjohnson@gs.verio.net> To: Mike Meyer <mwm@mired.org> Cc: kstewart@urx.com, Marc van Woerkom <marc.vanwoerkom@science-factory.com>, questions@FreeBSD.ORG Subject: Re: FreeBSD is being extremely slow.. Message-ID: <39AB2575.8E16B4C1@gs.verio.net> References: <14762.54705.346152.495600@guru.mired.org> <39AAE9EC.DFD5E4E@urx.com> <14763.2428.985901.162062@guru.mired.org>
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1.5x gain. 10% gain. Post your computers speed using one of the unix benchmark programs, overclock your box , then do the same benchmark program. I bet you will find that you did not get a 1.5X gain! Look at all the factors of computer speed that you have no control over. 1. Cabling standards 2. IDE and Scsi standards 3. Disk rotational speed 4. System/Video Ram speed 5. pci bus saturation. Yes STB has driver patches for thier 128 pci video cards because they hog up your pci bus. Overclocking your cpu would only make this problem worse because the pci bus bottle neck is now worse. Not only do you make your computer more unstable by overclocking it, but if you used one of the unix benchmark programs , I'd bet that you did not see 10% speed increase in your computer. You are also damaging your equipment. If you wish to throw away $$$ , could I give you my mailing address :-) Mike Meyer wrote: > > Kent Stewart writes: > > Mike Meyer wrote: > > > Marc van Woerkom writes: > > > > > I refuse to support overclocking, please fix your system and > > > > > then repost if you continue to have problems. > > > > A wise decision. > > > > I was once tempted to overclock a P166 to 180 or somethig MHz. > > > > There were several weird errors due to overclocking that did never > > > > show up under W95 but only under FreeBSD at that time. > > > What's really wierd is that overclockers seldom go to even as much as > > > 10% more CPU. For anything but very long-running cpu-bound tasks > > > that's not enough to be noticeable! > > That isn't true. You go from a FSB of 66 to 100 and clock for clock > > that is a 1.5x gain. > > I've never heard of anyone doing that one before(*). The ones I see > are more like the one here (166 -> 180), which is less than 9%. > > However, what I normally see are CPU speeds, which might be a > different ball of wax. If you go from 66 to 100 FSB with 4x cpu > multiplier and a 366MHz CPU, then the *CPU* clocked at 400MHz, which > is right at 10%. > > I'm not into this stuff. The damn things are flaky enough without > going out of my way to make them worse. > > <mike > > *) The exceptions are the guys doing liquid-cooled systems, and > getting 2 or 3x. On the other hand, they admit they're doing it for > hack value, and are spending more on the system than it would have > cost to buy a system running at the resulting speed. > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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