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Old 01-23-2011, 06:06 AM   #1
DavidLiu
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Why system clock runs faster than hardware clock?


My server is a VPS which is running with CentOS. I found a wield problem that the system clock always runs faster than the hardware clock. For example, I set system clock and hardware clock both on 20:00. After about half an hour, the system clock will be 20:34/5 which is wrong while the hardware clock remains correct(20:30).
 
Old 01-23-2011, 06:54 AM   #2
allend
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It appears that your hypervisor is generating more clock ticks than is necessary. I suggest running NTP in the virtual machine.
http://software.intel.com/en-us/blog...vm-time-drift/
 
Old 01-23-2011, 08:38 AM   #3
DavidLiu
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NTP is running, and the hardware clock is OK. Only system clock runs fast
 
  


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