Date: Thu, 24 Oct 2002 10:36:29 -0500 From: "Jack L. Stone" <jackstone@sage-one.net> To: Walter <walterk1@earthlink.net>, "freebsd-questions@FreeBSD.org" <freebsd-questions@FreeBSD.ORG> Subject: Re: kernel optimization Message-ID: <3.0.5.32.20021024103629.00e357f8@mail.sage-one.net> In-Reply-To: <3DB80C07.9BDDFE63@earthlink.net> References: <3DB80AF6.4559ED25@earthlink.net>
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At 10:04 AM 10.24.2002 -0500, Walter wrote: >Never mind... I just found the explanation further down (from >the "machine i386" line in LINT. Sorry. > ># CPU OPTIONS > ># ># You must specify at least one CPU (the one you intend to run on); ># deleting the specification for CPUs you don't need to use may make ># parts of the system run faster. This is especially true removing ># I386_CPU. ># >cpu I386_CPU >cpu I486_CPU >cpu I586_CPU # aka Pentium(tm) >cpu I686_CPU # aka Pentium Pro(tm) > > >Walter wrote: > >> I haven't yet found notes on optimizing the kernel by >> telling the compiler I have a Pentium rather than just >> a 386-compatible processor. I presume these lines >> in the kernel configuration file deal with this: >> >> machine i386 >> cpu I386_CPU >> cpu I486_CPU >> cpu I586_CPU >> cpu I686_CPU >> >> Q: Do I comment out the "I386_CPU" and "I486_CPU" >> lines to optimize for a Pentium, (& if not, how do I,) and >> Q: Does it make a significant difference? You should run "dmesg" and see what it says at the top, like this "686-class CPU": CPU: AMD Athlon(TM) MP 1900+ (1600.07-MHz 686-class CPU) Make your kernel conf agree with that. Best regards, Jack L. Stone, Administrator SageOne Net http://www.sage-one.net jackstone@sage-one.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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