Date: Thu, 2 Sep 1999 19:15:25 -0400 From: Randall Hopper <aa8vb@ipass.net> To: multimedia@freebsd.org Subject: Best Kernel Settings -- AMD K6-III Message-ID: <19990902191525.A8119@ipass.net>
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I want to maximize my video speed (There. I tied it into -multimedia :-)
What is the recommended set of flags to use for an AMD K6-III on
3.2-RELEASE?
I've got this new AMD-K6-III 400 plugged into my T2P4, and I'm trying to
figure out how to maximize FreeBSD's use of it.
I noticed:
options CPU_WT_ALLOC
in LINT. Would I be wise to enable it (i.e. is it stable)?
How about NO_MEMORY_HOLE?
Also, do I need to do anything to enable Write Combining / MTRRs? I
believe my BIOS enables combining by default, but I'm not sure if that
carries over across FreeBSD's boot. I recall Amancio talking about how big
a win write combining is on a PPro. Is this support in the kernel or is an
LKM of some sort (like fastvid) needed?
Thanks,
Randall
----------------------------------------------------------------------
CPU: AMD-K6(tm) 3D+ Processor (399.81-MHz 586-class CPU)
Origin = "AuthenticAMD" Id = 0x591 Stepping=1
Features=0x8021bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,PGE,MMX>
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