Opened 15 years ago
Closed 14 years ago
#6846 closed defect (worksforme)
One guest hangs when host is running multiple guests
| Reported by: | Alex Angas | Owned by: | |
|---|---|---|---|
| Component: | VMM | Version: | VirtualBox 3.2.0 |
| Keywords: | Cc: | ||
| Guest type: | Windows | Host type: | Windows |
Description
I've been regularly having a problem when running two guests at once where one of them will hang. I can see the screen fine but can't click on anything.
If I save state and then restore, the screen looks corrupt (mainly black with white/coloured lines). Sending the shutdown signal does nothing.
I can power off the dead guest and the other will keep running fine.
- VirtualBox 3.2.0 r61806
- Host: Windows 7 64-bit
- Guests: Windows 2008 32-bit
Attachments (4)
Change History (12)
by , 15 years ago
comment:1 by , 15 years ago
Attached is a process dump VirtualBox_100601_151240.7z and log VBox.2.log taken of the hung guest. CPU for the hung VirtualBox.exe was also at maximum. The problem seems to occur when one of the guests does not have focus for a number of minutes. The one that doesn't have focus hangs.
comment:3 by , 15 years ago
This shouldn't happen of course. But one remark: As your host has 2 processor cores it is not that wise to run two guests with 2 CPUs assigned to each guest. Keep in mind that there is some virtualization overhead. Oh, and perhaps assign a bit less memory to the guest as the host needs some memory for caching disk as well.
As a first test you could start both VMs with one guest CPU and see if you still observe hangs.
comment:4 by , 15 years ago
Thanks for that advice!
I changed one of the guests to just have 1 CPU and left the other at 2. Unfortunately there were still problems although to be honest I can't remember which VM hung.
I then set them both to use 1 CPU and have had no further issues. Since this seems like a good workaround the priority on this bug could probably be reduced.
comment:5 by , 15 years ago
Perhaps I spoke too soon. This may be unrelated to running multiple guests. I just had a single guest running set to use 1 CPU and that hung. I've tried to attach a dump file but it is 580K and over the allowed limit. I have attached the log. Please let me know where to send the dump.
comment:6 by , 15 years ago
Still relevant with VBox 3.2.10? Note that your host has only 2 CPU cores so it does not make much sense to run two guests in parallel with both having 2 virtual CPUs assigned.
comment:7 by , 15 years ago
I don't know. I've been running the guests with 1 virtual CPU since your suggestion. That workaround is fine for me.
comment:8 by , 14 years ago
| Resolution: | → worksforme |
|---|---|
| Status: | new → closed |
Log file from after dead guest was powered off