The Linux kernel does that. The 'jiffies' counter's initial value rolls over 5 minutes after boot: http://lxr.free-electrons.com/source/include/linux/jiffies.h

The Linux kernel does that. The 'jiffies' counter's initial value rolls over 5 minutes after boot: http://lxr.free-electrons.com/source/include/linux/jiffies.h#L163 http://lxr.free-electrons.com/source/include/linux/jiffies.h...