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Hello, i try to install the guestadditions under cent-os 2.6.18-194.26.1.el5. After the installation i want to edit the parameter for VBoxService. But when i look at the parameter with "VBoxManage guestproperty enumerate" for VBoxService they are dont exist. Then i make the propertys with ""VBoxManage guestproperty set perfrpm "/VirtualBox/GuestAdd/VBoxService/timesync-interval" 1000 under the host. But the settings will be ignored when i restart the VBoxservice . So i started the VBoxService under debugmode "/usr/sbin/VBoxService -f -vvv --enable-timesync --timesync-interval 1000". I see that the service includes the time from the host and the guest, and detects a time difference but when he synced it have no effect on the guestclock. What am I doing wrong?

Yours sincerely

Matthias Wilmes

Hi,

... "/usr/sbin/VBoxService -f -vvv --enable-timesync --timesync-interval 1000". I see that the service includes the time from the host and the guest, and detects a time difference but when he synced it have no effect on the guestclock. What am I doing wrong?

hmm... what are you doing at all, what do you want to get?

if you have problems with time sync on RHEL and clone guests then add the divider=10 kernel parm in /boot/grub/grub.conf

Just figuring this out also:
You must use "/VirtualBox/GuestAdd/VBoxService/--timesync-interval" in guestproperty set VboxManage command, so "--" ... dont omit such hyphens, surprisingly