Changes

{{Tip box|if you subsequently update SME Server '''Guest''' to use a newer kernel, you may need to change your kernel boot line to reflect the update.}}

{{Tip box|if you subsequently update SME Server '''Guest''' to use a newer kernel, you may need to change your kernel boot line to reflect the update.}}

Timing related options are important within Virtual Guests and to the amount of 'pressure' it puts on the host and level/increasing CPU usage of the host and guest. By default SME Server uses the NTP deamon for 'timing' related matters, but by default is focussed on the above mentioned 1000HZ, hence the kernel option 'divider=10', thus reducing the timing cycles/context switching requests on the host.

Timing related options are important within Virtual Guests and to the amount of 'pressure' it puts on the host and level/increasing CPU usage of the host and guest. By default SME Server uses the NTP deamon for 'timing' related matters, but by default is focussed on the above mentioned 1000HZ, hence the kernel option 'divider=10', thus reducing the timing cycles/context switching requests on the host. See the above VMWare document mentioned (Way at the bottom).

SME Server has an undocumented feature related to the NTP deamon configuration. To activate the best NTP settings for a Virtual guest issue on the SME Server guest:

SME Server has an undocumented feature related to the NTP deamon configuration. To activate the best NTP settings for a Virtual guest issue on the SME Server guest:

  config setprop ntpd SupportLargeDrift enabled

  config setprop ntpd SupportLargeDrift enabled

This will adjust /etc/ntp.conf to 'better' settings for a virtual guest.

by setting the above value to 'disabled', the NTP service and configuration will revert back to SME Server defaults.

===Kernel Upgrade===

===Kernel Upgrade===