On Wed, Dec 05, 2007 at 09:57:24PM +0300, Sergei Shtylyov wrote: > It works: > 41 total events, 5.109 events/sec That's the expected behaviour, good. One of the remaining problems on some platforms with tickless kernels is that not all clocksource / clockevent driver combinations are playing nicely with each other. You can switch the clocksource driver manually at runtime. First let's see what clocksource we have: # cd /sys/devices/system/clocksource/clocksource0/ # cat available_clocksource MIPS pit jiffies # cat current_clocksource MIPS MIPS is the CP0 count register. pit is the i8259 and jiffies simply counts interrupts like in the old days so has problems with lost timer interrupts and generally not such a great idea for tickless. You should be able to switch between all these drivers by something like: # echo jiffies > current_clocksource Time: jiffies clocksource has been installed. # Try switching between all the available clocksources a few times to see if that's working right also. Ralf
