Opened 14 years ago

Closed 13 years ago

#7872 closed defect (fixed)

heavy load caused by: "VBoxManage guestcontrol execute --wait-for exit ..."

Reported by: Paolo Virtual Owned by:
Component: VM control Version: VirtualBox 3.2.12
Keywords: Cc:
Guest type: Linux Host type: Windows


when waiting for a blocking program in the guest called by

"VBoxManage guestcontrol execute --wait-for exit ..."

there is a significant increase in CPU load on the host. This is caused by both processes VBoxSVC as well as VirtualBox, although the program in the guest does not cause any load within the guest. This behavior was observed, on Windows 7 and Linux hosts, with VirtualBox Versions 3.2.10, 3.2.12 as well as Beta 4.0.

Attachments (1)

Load_in_Linux_gast.png (11.8 KB ) - added by Paolo Virtual 13 years ago.

Download all attachments as: .zip

Change History (11)

comment:1 by Paolo Virtual, 13 years ago

The bug is still persistent in Versions 4.0 and 4.02 as well as SVN-revision r35773.

comment:2 by Frank Mehnert, 13 years ago

Resolution: duplicate
Status: newclosed

Duplicate of #8235.

by Paolo Virtual, 13 years ago

Attachment: Load_in_Linux_gast.png added

comment:3 by Paolo Virtual, 13 years ago

Resolution: duplicate
Status: closedreopened

Unfortunately the load is still there, caused by VBoxService within the guest (see attachment).

comment:4 by Frank Mehnert, 13 years ago

Which additions version is that?

in reply to:  4 comment:5 by Paolo Virtual, 13 years ago

Replying to frank:

Which additions version is that?

We tried with the guest additions of Versions 4.0, 4.02 and meanwhile also SVN-revision r35820. To make it clear, the 'wait-for-exit' issues from #8235 are fixed, but the heavy load is still there.

comment:6 by Frank Mehnert, 13 years ago

r35831 should improve the behavior. This changeset will be included in the next maintenance release. The cause of the CPU load is busy waiting of VBoxManage for the termination of the guest process. Changing this would require an API change, therefore a change is not possible in short term.

comment:7 by Frank Mehnert, 13 years ago

4.0.4 contains a partial fix.

comment:8 by Anton, 13 years ago

Execution guest programms without "waiting-for-exit" heavy loads CPU too. CPU is about 100% until the guest process off. The same process running in the virual machine manually does not load CPU more than 10%.

This bug is reproduced by CLI utility VBoxManage and by API load IGuest.executeProcess().

This bug does not still fixed by 4.0.4 virtualbox version.

comment:9 by andy_9_9_9_9, 13 years ago

In my case, version 3.2.10 still works. However. I just upgraded my system to squeeze. And somehow sequeeze does not work with 3.2.10 anymore (due to some NMI_WATCHDOG not found anymore). So now I am really stuck.

comment:10 by Frank Mehnert, 13 years ago

Resolution: fixed
Status: reopenedclosed

Should be fixed in VBox 4.0.6.

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