Arm device system time unexpectedly change!
I have a Gumstix overo Arm device which runs linux kernel 2.6.34. I'm running a software program which relies on system time, so it is quite time critical. In the initialization process of this program it change the system time using the "date" command. But I happened to notice that after about 20 minutes updating the time, system time suddenly change by 2 minutes. I have configured the system timezone as UTC. After starting this time update process, each time I notice that there's this sudden time drift. I'm in deep trouble since my program heavily depend on system time. I would be so thankful for advice.