On Thu, 30 Apr 2009 08:46:41 -0400 John Baldwin <[email protected]> wrote:
> On Sunday 26 April 2009 10:27:42 pm Garrett Cooper wrote: > > Why's the default ACPI-fast? For power-saving functionality or > > because of the `quality' factor? What is the criteria that > > determines the `quality' of a clock as what's being reported above > > (I know what determines the quality of a clock visually from a > > oscilloscope =])? > > I suspect that the quality of the HPET driver is lower simply because > no one had measured it previously and HPET is newer and less "proven". > http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/acpica/acpi_hpet.c shows some of the history behind the decision. Apparently it used to be slower but it was hoped it would get faster as systems supported it better. I guess that's happening now. -- Bruce Cran _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "[email protected]"
