Hello,
there seems to be performance issue in i8042 task, probably introduced by
revision 1712. I noticed significantly increased CPU utilization of i8042
while moving a mouse:
user kern
rev1710 vbox 32% 42%
rev1710 qemu 12% 9%
rev1717 vbox 90% 97%
rev1717 qemu 15% 30%
This makes compositor mouse pointer practically unusable in VirtualBox. I was
able to reproduce the problem on both ia32 and amd64 builds. It can be
reproduced even in EGA build, where there is actually no mouse pointer. If it
is of any significance, I am using VirtualBox 4.2.4 and qemu/non-KVM 0.13.0,
both running in Win7 x64 host.
Is anybody able to reproduce it, perhaps on different host?
Petr
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