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From: | Gerd Hoffmann |
Subject: | Re: [Qemu-devel] Disable PS/2 mouse |
Date: | Thu, 10 Jun 2010 09:32:59 +0200 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100505 Fedora/3.0.4-2.el6 Thunderbird/3.0.4 |
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).
cheers, Gerd
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