Jeremy Fitzhardinge wrote:
Laurent Vivier wrote:
functionnalities:
- allow to measure time spent by a CPU in a virtual CPU.
- allow to display in /proc/state this value by CPU
- allow to display in /proc/<pid>/state this value by process
- allow KVM to use these 3 previous functionnalities
So, currently time spent in a kvm guest is accumulated as qemu-kvm
usertime, right? Given that qemu knows when its running in qemu vs
guest context, couldn't it provide the breakdown between user and guest
time (ditto lguest)?
qemu doesn't (and shouldn't) do accounting; that's best done by
interrupt driven code.
The patches do account for guest time in a separate counter; guest time
is added to both user time and the new counter. This allows an old
'top' to see guest time (accounted as user time), and a new 'top' to
separate guest time and user time by performing the appropriate
mathematical operation.
--
error compiling committee.c: too many arguments to function
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