On 10/20/2009 04:48 PM, Tomasz Chmielewski wrote:
Avi Kivity wrote:
On 10/20/2009 10:19 PM, Tomasz Chmielewski wrote:
I meant, how many qemu threads are there, and how much cpu does
each take?
There is only one qemu thread for the 4-cpu guest.
Not possible. Even a single-cpu guest has two threads.
"ps auxH" shuld show me all threads? I started it multiple times, and
it shown 1 thread for the 4-CPU guest
(with no CPU intensive tasks running - could this be a reason?).
No. kvm implies 2+ threads.
What does 'ls /proc/$(pgrep qemu)/task' show?
Running several CPU-intensive processes on this guest uses only one
CPU on the host.
Both "ps auxH" and /proc confirm that this guest has 4-5 threads when
I run several CPU-intensive apps.
Only one thread for this guest uses 100% CPU time; other threads use ~0%.
If I don't run any CPU-intensive tasks on this guests, it only runs
one thread (unless I misinterpret something here).
Some 1-CPU guests have only one thread though?
Are you sure they're using kvm? Try 'info kvm' in the monitor. tcg
will only use on thread (more will be spawned for I/O, but will
eventually die).
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