{{tag>[kvm ntp centos]}}

=====KVM Guest time management=====
[[https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization_Host_Configuration_and_Guest_Installation_Guide/chap-Virtualization_Host_Configuration_and_Guest_Installation_Guide-KVM_guest_timing_management.html|KVM Guest time management]]


Host has TSC capability
  cat /proc/cpuinfo | grep constant_tsc
  
The Network Time Protocol (NTP) daemon should be running on the host and the guest virtual machines.

Check current clock source
  cat /sys/devices/system/clocksource/clocksource0/current_clocksource 
  
Host = tsc

Guest = kvm_clock