Hi! > > > This was in conjunction with a "Variable Scheduling Timeout" (VST) > > > patch, so the timer precision is still 1/HZ but the interrupt > > > rate is less ... if the next scheduled timeout is 1 second in > > > the future, the timer IRQ wouldn't fire until then. The S/390 > > > folk contributed some infrastructure a while back that makes > > > VST trivial. The basic deal is that CPU can stay in the idle > > > "loop" a lot longer. > > > > How does jiffies get updated when VST is in effect and no timeouts are > > scheduled for a while? > > Darn if I didn't just see a patch flow by on LKML to make > sure that, "jiffies" gets updated from the hardware real > time clock after resume ... "xtime" too. That's how; though > maybe that patch didn't address VST. :) > > Or failing that, "hwclock --systohc", an old workaround > I remember from APM days. Always seemed like a bug to > me that userspace ever saw such stuff. It *is* bug and I'm trying to make sure that it is fixed... Pavel -- People were complaining that M$ turns users into beta-testers... ...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!
