Optimizing FreeBSD

Z.C.B. vvelox at vvelox.net
Sun Sep 4 22:25:48 PDT 2005

On Sun, 04 Sep 2005 18:19:12 -0500
jesse <marquezjesse at gmail.com> wrote:

> Hi all,
> Is there any performance gain when using Standard-PC HAL over
> ACPI-PC HAL? I'm running FreeBSD 5.4-STABLE on a abit KR7A(KT266A)
> motherboard. I currently have APIC disabled in the bios, ACPI
> disabled at boot and I feel like my system is snappier. Just
> wondering if there is any truth to this.

I've not noticed any difference with ACPI on or off. I just leave it
on so I have access to the features it provides.
Make sure hw.acpi.cpu.cx_lowest is set to C1.

In the area of APIC I remember finding some devices on my system not
properly detecting with out it, on my Nforce2 board. No clue about
that chipset.

I've never any speed differences though.

More information about the freebsd-questions mailing list