ACPI-fast default timecounter, but HPET 83% faster

Joerg Sonnenberger joerg at britannica.bec.de
Mon Apr 27 13:46:31 UTC 2009


On Mon, Apr 27, 2009 at 01:50:31AM +0200, Pieter de Goeje wrote:
> While fiddling with the sysctl kern.timecounter.hardware, I found out
> that on my system HPET is significantly faster than ACPI-fast.

I did some extensive testing on a variety of AMD and Intel boards and
never found a system where HPET is slower than ACPI-fast.

In addition, HPET provides a higher resolution.

Joerg


More information about the freebsd-hackers mailing list