On Do, 2015-06-04 at 15:24 +0200, Laszlo Ersek wrote: > On 06/04/15 08:16, Tian Feng wrote: > > Update the value of those async polling interval macros from 50ms to 1ms. > > Out of pure curiosity, how does this manifest in CPU consumption? > > USB 1 and 2 are CPU hungry when virtualized. > > USB 3 / XHCI is more amicable and (as far as I know) the answer for the > "my virtual USB devices consume too much CPU even when idle" problem. I > wonder if increasing the XHCI polling rate 50-fold will impact VMs > visibly. (Admittedly, a VM spends a fraction of its lifetime executing > OVMF, hence "pure curiosity" on my part.)
Probably not enough to make the user notice, but I'm pretty sure this is measurable with any host adapter, assuming there is a device hooked up which needs polling (kbd or mouse for example). cheers, Gerd ------------------------------------------------------------------------------ _______________________________________________ edk2-devel mailing list edk2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/edk2-devel
