Re: [Qemu-devel] Performance issues with -usb

[malc]

On Sat, 29 Jul 2006, Leonardo E. Reiter wrote:

> Brad,
>
> I think the 0x20 (32ms) value might be fine for something like VNC
> display, but on a local display the mouse response is noticeably slow
> (for me at least.)  I tried using 0x0a (10), same as the plain USB
> mouse, but the idle CPU utilization was still around 10%.  What is
> really odd is that this was not a problem in older versions of QEMU,
> unless I'm reading data incorrectly.  Do you know what else might have
> changed?  I will look as well and see if I can apply some logic to this.
> I suspect it's probably something with the new clock mechanism, but it
> still doesn't make a lot of sense to me.

Sometime after usbtablet hit the CVS i tried it out and the first thing i
noticed was the cpu load. On june 12 i tried to figure out if one of the
patch authors (Anthony Liguori) is aware of the situation. So it's not
related to gettimeofday switchover.

--
mailto:address@hidden