Re: [patch] Real-Time Preemption, -RT-2.6.12-rc1-V0.7.41-10

Ingo Molnar
2005-03-27T08:58:35Z

* Lee Revell <rlrevell@joe-job.com> wrote:

> Running for several days with PREEMPT_DESKTOP, on the Athlon XP the
> worst latency I am seeing is ~150 usecs! But on the C3 its about 4ms:

could you run a bit with tracing disabled (in the .config) on the C3?
(but wakeup timing still enabled) It may very well be tracing overhead
that makes those latencies that high. Also, we'd thus have some hard
data on how much overhead tracing is in such a situation, on that CPU.

Ingo