Why CPU has been at 25%?

[chinacjt]

after I Install 4.3.10 ,the host CPU has been at 25% . Whether I enabled SSE4.1? Version does not have this problem before eg:4.3.8

[frank]

Do I understand you correct that your VM starts normal but while your VM is running and the guest is idle, you see a significant host CPU load? Which guest and which host is that?

[chinacjt]

hosts:windows 8.1
guest:windows server 2003 R2
CPU:E8335
memory:DDR2 800
MB:P45

[chinacjt]

Do I understand you correct that your VM starts normal but while your VM is running and the guest is idle, you see a significant host CPU load? Which guest and which host is that?

hosts:windows 8.1
guest:windows server 2003 R2

logs:

[Perryg]

We don't like to follow off site links.
Post the log file here as an attachment. We only need one and you can compress it if it is too big to post direct.

[chinacjt]

We don't like to follow off site links.
Post the log file here as an attachment. We only need one and you can compress it if it is too big to post direct.

OK，I upload logs

[Perryg]

Code: Select all

00:00:01.173081 Guest OS type: 'Windows2003'
00:00:01.175152 fHMForced=true - SMP
00:00:01.175162 fHMForced=true - 64-bit guest

First thing I would do is change the version of the guest to 64 bit. With the newer releases the version has to match the install. Windows2003_64.

[chinacjt]

Code: Select all

00:00:01.173081 Guest OS type: 'Windows2003'
00:00:01.175152 fHMForced=true - SMP
00:00:01.175162 fHMForced=true - 64-bit guest

First thing I would do is change the version of the guest to 64 bit. With the newer releases the version has to match the install. Windows2003_64.

but the os of guest is 32bit ,why I must change the os type?

when i change the os type to 64bit , the CPU rate also is 25% up.

[Perryg]

but the os of guest is 32bit ,why I must change the os type?

You didn't say it was 32-bit and all indications in the log were 64-bit. That being said if you are going to run a 32-mode guest with SMP you need to be sure that longmode is enabled in the guest. You can see this by running VBoxManage showvminfo <name|uuid>

Other than that you need to see what is actually using the processor on the host when the guest is idle. Is it the guest or the VBoxSVC? Also remember that a Windows guest may seem to be in idle but actually could be indexing or other things while the guest is idle.

[chinacjt]

Code: Select all

00:00:01.173081 Guest OS type: 'Windows2003'
00:00:01.175152 fHMForced=true - SMP
00:00:01.175162 fHMForced=true - 64-bit guest

First thing I would do is change the version of the guest to 64 bit. With the newer releases the version has to match the install. Windows2003_64.

when I start guest of 64bit ,the CPU Rate is nomal.
guest of 32bit isnot nomal?

[chinacjt]

but the os of guest is 32bit ,why I must change the os type?

You didn't say it was 32-bit and all indications in the log were 64-bit. That being said if you are going to run a 32-mode guest with SMP you need to be sure that longmode is enabled in the guest. You can see this by running VBoxManage showvminfo <name|uuid>

Other than that you need to see what is actually using the processor on the host when the guest is idle. Is it the guest or the VBoxSVC? Also remember that a Windows guest may seem to be in idle but actually could be indexing or other things while the guest is idle.

E:\Program Files\Oracle\VirtualBox>VBoxManage showvminfo U872
Name: U872
Groups: /
Guest OS: Windows 2003 (32 bit)
UUID: 169f5471-b1c0-481d-b0c4-bde26b382987
Config file: F:\vm\U872\U872.vbox
Snapshot folder: F:\vm\U872\Snapshots
Log folder: F:\vm\U872\Logs
Hardware UUID: 169f5471-b1c0-481d-b0c4-bde26b382987
Memory size: 1492MB
Page Fusion: off
VRAM size: 128MB
CPU exec cap: 100%
HPET: off
Chipset: ich9
Firmware: BIOS
Number of CPUs: 2
PAE: on
Long Mode: off
Synthetic CPU: off
CPUID overrides: None
Boot menu mode: message and menu
Boot Device (1): HardDisk
vt-x:on

[chinacjt]

when I reinstall 4.3.8 ,the problem disappears

[Perryg]

You need to post a ticket at bugtracker since this is a regression.

[chinacjt]

You need to post a ticket at bugtracker since this is a regression.

the logs(4.3. are upload now，please check it .thks

the logs(4.3.10) has been uploaded above.

[chinacjt]

Someone can solve it?