Date: Fri, 5 May 2000 12:54:23 -0400 From: jfreeze@qx.net To: questions@freebsd.org Subject: Optimizing Kernel for K6-2 Message-ID: <77365954152F.AAA717A@mail2.qx.net>
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Date: Fri, May 5 2000 12:56:10 GMT-0400 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit I am trying to optimize my kernel for my K6-2/450 processor. From looking at the lint kernel, I see three basic changes. These changes are listed below. My question is, "Am I doing the right thing by making these changes?". Thanks Jim # (1) comment out all but the I586 option # I've read that commenting out uneeded processors is good # but what does this really buy me? # CPU OPTIONS # #cpu "I386_CPU" #cpu "I486_CPU" cpu "I586_CPU" # aka Pentium(tm) #cpu "I686_CPU" # aka Pentium Pro(tm) # (2) Add the write alloc option. Does this speed things up? # CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD # K5/K6/K6-2 cpus. options "CPU_WT_ALLOC" # (3) Add the no memory hole option. Don't really know what this does # NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors # which indicates that the 15-16MB range is *definitely* not being # occupied by an ISA memory hole. options "NO_MEMORY_HOLE" To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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