On 11/16/2010 01:22 PM, Andreas Färber wrote:
Am 15.11.2010 um 22:53 schrieb François Revol:
I'm still having a hard time getting sound to work reliably in Haiku
guests regardless the output or emulated card. OTH it works perfectly
in VirtualBox with almost no cpu overhead. If anyone has a clue...
It might be related to the use of RDTSC as primary time source, still
it's the same in vbox.
Did you check the time drift command line options? Iirc Gleb needed
some hacks for timer-related issues on Windows.
Time drift correction is only applicable to the RTC and PIT and deals
with catching up the periodic timers.
The issue with the TSC as a time source is that it skips around during
CPU migration. The easiest way to work around this is to simply pin
your guest to a single physical CPU (assuming you're using KVM).
With TCG, it depends, but you can actually end up accessing the host TSC
in which case, your SOL because the code in QEMU that uses the host TSC
assumes a UP host which aren't all that common anymore :-)
Regards,
Anthony Liguori
(does [KVM] even work on OSX ?)
No.
Andreas
