bug or config? Win7 VM freezes for ~20s while host CPU=100+%
Posted: 6. Jul 2011, 02:12
I run VB PUEL 4.0.10 on 64-bit Opensuse 11.4 host.
I installed Windows7 Home Premium 64-bit in a guest.
Everything in the Guest works. Every once in awhile -- not reproducible on demand, but happens frequently -- the VM Guest just pauses. Everything stops. Progress bars stop moving, perf monitors stop scrolling, downloads stop xfer, etc.
Then after ~ 20-30 seconds, everything starts back up again, and continues normally.
There's no errors I've found in any log I've checked, either on host or guest. The one telltale is that, during the period of these pauses, "top" running in shell at the linux host shows VirtualBox's CPU% --> >~ 104%. After those 20-30 secs, when the pause 'releases', CPU utilization goes back down to ~ 10-15%, where it hovers normally.
Here's my VM's config:
vboxmanage showvminfo WIN7
Reading online, I've fiddled with #CPUs, amount of RAM, etc etc -- nothing seems to affect this behavior.
I've added "divider=10" to my grub kernel config. Again, no effect.
Also, setting "kernel.perf_event_paranoid = 2" in sysctl has no effect.
Any ideas as to what's causing these pauses, and how to fix it?
I installed Windows7 Home Premium 64-bit in a guest.
Everything in the Guest works. Every once in awhile -- not reproducible on demand, but happens frequently -- the VM Guest just pauses. Everything stops. Progress bars stop moving, perf monitors stop scrolling, downloads stop xfer, etc.
Then after ~ 20-30 seconds, everything starts back up again, and continues normally.
There's no errors I've found in any log I've checked, either on host or guest. The one telltale is that, during the period of these pauses, "top" running in shell at the linux host shows VirtualBox's CPU% --> >~ 104%. After those 20-30 secs, when the pause 'releases', CPU utilization goes back down to ~ 10-15%, where it hovers normally.
Here's my VM's config:
vboxmanage showvminfo WIN7
Code: Select all
Name: WIN7
Guest OS: Windows 7 (64 bit)
UUID: f814907d-07af-f321-7aa8-b492e27a6581
Config file: /home/dchdesk/VBOX/WIN7/WIN7.vbox
Snapshot folder: /home/dchdesk/VBOX/WIN7/Snapshots
Log folder: /home/dchdesk/VBOX/WIN7/Logs
Hardware UUID: f814907d-07af-f321-7aa8-b492e27a6581
Memory size: 2048MB
Page Fusion: off
VRAM size: 128MB
HPET: off
Chipset: ich9
Firmware: BIOS
Number of CPUs: 1
Synthetic Cpu: off
CPUID overrides: None
Boot menu mode: message and menu
Boot Device (1): Floppy
Boot Device (2): DVD
Boot Device (3): HardDisk
Boot Device (4): Not Assigned
ACPI: on
IOAPIC: on
PAE: on
Time offset: 0 ms
RTC: local time
Hardw. virt.ext: on
Hardw. virt.ext exclusive: on
Nested Paging: on
Large Pages: off
VT-x VPID: on
State: running (since 2011-07-05T23:22:55.636000000)
Monitor count: 1
3D Acceleration: on
2D Video Acceleration: on
Teleporter Enabled: off
Teleporter Port: 0
Teleporter Address:
Teleporter Password:
Storage Controller Name (0): IDE Controller
Storage Controller Type (0): PIIX4
Storage Controller Instance Number (0): 0
Storage Controller Max Port Count (0): 2
Storage Controller Port Count (0): 2
Storage Controller Bootable (0): on
Storage Controller Name (1): SATA Controller
Storage Controller Type (1): IntelAhci
Storage Controller Instance Number (1): 0
Storage Controller Max Port Count (1): 30
Storage Controller Port Count (1): 2
Storage Controller Bootable (1): on
IDE Controller (1, 0): Empty
SATA Controller (0, 0): /home/dchdesk/VBOX/WIN7/Win7_C.vmdk (UUID: 5fe6db6b-a274-2c49-c993-f3e90497269c)
SATA Controller (1, 0): /home/dchdesk/VBOX/WIN7/Win7_D.vmdk (UUID: 8aac1862-4a83-4fa4-86ac-240859ba404c)
NIC 1: disabled
NIC 2: MAC: 080027CF49A5, Attachment: Host-only Interface 'vboxnet0', Cable connected: on, Trace: off (file: none), Type: virtio, Reported speed: 0 Mbps, Boot priority: 0
NIC 3: MAC: 080027FD6B9A, Attachment: Bridged Interface 'eth1', Cable connected: on, Trace: off (file: none), Type: 82540EM, Reported speed: 0 Mbps, Boot priority: 0
NIC 4: disabled
NIC 5: disabled
NIC 6: disabled
NIC 7: disabled
NIC 8: disabled
Pointing Device: PS/2 Mouse
Keyboard Device: PS/2 Keyboard
UART 1: disabled
UART 2: disabled
Audio: enabled (Driver: ALSA, Controller: HDA)
Clipboard Mode: Bidirectional
Video mode: 1920x924x32
VRDE: disabled
USB: enabled
USB Device Filters:
<none>
Available remote USB devices:
<none>
Currently Attached USB Devices:
<none>
Shared folders: <none>
VRDE Connection: not active
Clients so far: 0
Guest:
OS type: Windows7_64
Additions run level: 2
Configured memory balloon size: 0 MB
I've added "divider=10" to my grub kernel config. Again, no effect.
Also, setting "kernel.perf_event_paranoid = 2" in sysctl has no effect.
Any ideas as to what's causing these pauses, and how to fix it?
