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From: | Peter Lieven |
Subject: | Re: [Qemu-devel] Disable PS/2 mouse |
Date: | Thu, 10 Jun 2010 12:35:01 +0200 |
User-agent: | Thunderbird 2.0.0.23 (X11/20090817) |
Gerd Hoffmann wrote:
On 06/10/2010 09:12 AM, Dor Laor wrote:On 06/09/2010 05:35 PM, Gerd Hoffmann wrote:Hi,with 0.12.4 it is still the case that a total idle vm takes about 6-8% of a 2.4GHz Xeon Core.I see that order of magitude too, no matter whenever usb is on or off. With older qemu and usbtablet it used to be up to 25%.Is it possible to dynamically control the refresh internally within qemu so VMs without a connected VNC client will have rare refreshes or no refresh at all? I hope it's not the OS who polls it.vnc/vga or usb tablet?For the vga it happens already, with no vnc client connected vnc zaps the refresh timer and stops calling vga_hw_update(), thus vga stops doing framebuffer dirty tracking too.For usb hid devices: No idea how they work and whenever we can put them into sleep somehow (with/without guest cooperation).
is it the emulated bus or the tablet device that is generating the load?
cheers, Gerd
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