6 Jul
2008
6 Jul
'08
9:25 p.m.
Back on Sunday 06 July 2008, schoappied was like:
should I have this enabled? I seems weird to set it to No_HZ if further
on Hz is set to 1000 ... or do i misunderstand this item?
Tickless System (Dynamic Ticks) (NO_HZ)
This option enables a tickless system: timer interrupts will
only trigger on an as-needed basis both when the system is
busy and when the system is idle.
It's sort of like using a callback rather than polling to deal with
interrupts. (not literally, but the analogy works)
It's great for laptops because it helps preserve battery power. It _sounds_
like it might be a cool option for real time, but I've tried it and it caused
all kinds of problems with real time performance. (It also totally hosed
compiz)
-Reuben