Jan Kiszka schreef:

Gilles Chanteperdrix wrote:

Jan Kiszka wrote:

Johan Visser wrote:

VMware runs, but gives heavy CPU load ( about 38 % ) instead of 6-8 % on
a real system.

That's expected if your CPU actually lacks hardware virtualization.

An idle guest used to consume almost nothing on a vmware host. Only
MS-DOS needed a special TSR to have its idle mode not consume 100%. On
the other hand, the last time I used vmware was 5 years ago...


I meant the scale is expected: If basically the same system runs with
some non-zero load on real hw, the load that this machine inside a
code-translating hypervisor like vmware causes to its host will be
noticeably larger. But even the idle load can be noteworthy if I/O
emulation causes a lot of host activities, even with HVM.

Jan

Tested QEMU as well, boots and runs completely.
it seems to be more jumpy in CPU load and has about 10% more load then VMware , after a short time ( minutes ) our application crashes because of a userspace watchdog we have implemented. this detects a lack of taskswitches in userspace.
( i use a dualcore 2x2.0Ghz centrino CPU. A real celeron @ 400MHz gives me12% CPU load in real-time :)
Also the idle task gives max CPU load at first. but after some user-interface actions (mouse clicks ) this reduces to 0%.
I will have to investigate more, but have a lack of time now.
cheers

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