Re: [Announce] [patch] Modular Scheduler Core and Completely Fair Scheduler [CFS]

From: Ingo Molnar
Date: Sat Apr 14 2007 - 06:56:43 EST



* Daniel Walker <dwalker@xxxxxxxxxx> wrote:

> One other thing, what happens in the case of slow, frequency changing,
> are/or inaccurate clocks .. Is the old sched_clock behavior still
> tolerated?

yeah, good question. Yesterday i did a quick testboot with that too, and
it seemed to behave pretty OK with the low-res [jiffies based]
sched_clock() too. Although in that case things are much more of an
approximation and rounding/arithmetics artifacts are possible. CFS works
best with a high-resolution cycle counter.

Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/