Date: Tue, 1 Oct 1996 16:26:50 -1001 From: richard@pegasus.com (Richard Foulk) To: freebsd-hardware@FreeBSD.org Subject: Re: H/W recommendation Message-ID: <199610020227.QAA22441@pegasus.com> In-Reply-To: BRETT_GLASS@infoworld.com "Re: H/W recommendation" (Oct 1, 7:15pm)
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} > As can be seen the best parts to be using are the 100, 133, 166 and 200, } > with the exception that at a mulitplier of 3 the CPU starves for memory. } } Depends on the cache, and whether you get a Pentium or a Pentium Pro. A } Pentium Pro with a built-in 512 KB level 2 cache usually won't starve, even } on UNIX boxes. (To put things in perspective, a typical FreeBSD kernel, } with unnecessary drivers removed, is about that size.) But the bargain } basement version of the Pentium Pro, with the 256 KB cache, will drag in } the same configuration. Unfortunately, far too many clone vendors just } HAPPEN not to mention in their ads that they're including the cheaper CPU. } } I'd like to see a megabyte cache on board. } This isn't quite the way cache works. A board with 512K of cache won't hold 512K of code, even if that were necessary -- most of the code in the kernel or any other large program seldom gets run. But the cache isn't just a mirror of memory, probably half the cache is available for code storage (depends on how it's implemented.) More importantly, diminishing returns sets in real quick after 256K, (actually before.)
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