Date: Mon, 28 Aug 2000 22:34:06 -0500 From: "Josh Paetzel" <jpaetzel@hutchtel.net> To: <gjohnson@gs.verio.net>, "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: <017701c0116d$fb390760$97440ace@mark8> References: <14762.54705.346152.495600@guru.mired.org> <39AAE9EC.DFD5E4E@urx.com> <14763.2428.985901.162062@guru.mired.org> <39AB2575.8E16B4C1@gs.verio.net>
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----- Original Message ----- 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> Sent: Monday, August 28, 2000 9:52 PM Subject: Re: FreeBSD is being extremely slow.. > 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. > > Heh....my experiences have been totally different than most of yours. I am a merciless overclocker of systems. Right now I am running a p3-700 @ 933 just because I can. It didn't even occur to me that doing such a small overclock as the original poster was doing could effect system stability.....but then my motherboard has the proper dividers for the pci bus. (the systems that I was using those LNE100TX's weren't overclocked, btw.) More fuel to the fire, Josh > > 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 > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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