On Wed, 4 Jun 2003 15:39:30 -0700, Jun Sun <jsun@mvista.com> wrote: >There are many benefits of having perfectly synchronized CPU >count registers on SMP machines. > >I wonder if this is something which have been done before, >and if this is feasible. IA64 has to do this, arch/ia64/kernel/smpboot.c:ia64_sync_itc. That function is only called at boot time, but there have been discussions about calling it regularly to resync the itc values, like NTP. Of course, it has no chance of working if you install cpus with different itc frequencies.
