VirtualBox

Ticket #9099 (closed defect: fixed)

Opened 3 years ago

Last modified 2 years ago

4 cores Guest Cpu saturation while host cpu load around 37%

Reported by: Gianks Owned by:
Priority: major Component: guest smp
Version: VirtualBox 4.0.8 Keywords: CPU, LIMITED
Cc: Guest type: Windows
Host type: Linux

Description

While the guest operating system reports 4 * 100% CPU usage in task manager, top over my linux host reports VirtualBox using just 150% of my total processor. looking at single cores no one reaches 100%.

I've read about poor multiprocessor guests performances in the manual but i don't understand if this behavior may be included or has to be considered "normal".

My Host:

OP: Dell e6410 - Debian Testing x32 with kernel 2.6.38-2-686-bigmem
CPU: Intel i5 M520, 2.4GHz
MEMORY: 8GB

Guest:

OP: Windows 7 x32
ASSIGNED CPU: 4
ASSIGNED MEMORY: 3072 MB
HDD: dynamic, 80Gb (now used 11,8GB)

Change History

comment:1 Changed 3 years ago by Gianks

Assigning just 2 CPU to the guest, top shows VirtualBox Cpu usage around 180%. The overall guest performaces seems to be better with 2 cpu instead of 4.

comment:2 Changed 2 years ago by frank

Still relevant with VBox 4.1.6? If so, please attach a VBox.log file of a 4.1.6 VM session.

comment:3 Changed 2 years ago by frank

  • Status changed from new to closed
  • Resolution set to fixed

No response, closing.

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