Mark Kettenis [[email protected]] wrote: > > Date: Wed, 15 Aug 2012 11:02:43 -0400 > > From: Ted Unangst <[email protected]> > > > > The acpihpet timer is, in my testing, lots better than the acpitimer. > > Faster to read and more precise. They should not have the same quality > > value. Double acpihpet. > > Since both acpitimer(4) and acpihpet(4) are based on an abstract > specification that AFAIK doesn't say anything about the actual > underlying hardware I'm totally unconvinced unless you can show this > to be true on a wide variety of hardware. >
HPET on some processors is emulated in software via BIOS. Ring -1 or whatever. I believe one of either the AMD Elan SC420 or the AMD Geode LX fits in this category.
