Re: Latency tests with 2.6.12-rc1

Ingo Molnar
2005-03-31T08:03:18Z

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

> So there seems to be a bug in the latency tracer where the timer is
> not being reset on reschedule. [...]

update: i found a bug in the latency tracer that could explain some of
the artifacts you noticed, IRQs would reset the tracing timer under
certain circumstances. So sometimes traces would show up, sometimes they
wouldnt - and even if traces were generated, they often were truncated.
The bug is fixed in the -41-24 patch. If you were hit by this bug then
you'll likely see new and larger latencies reported.

Ingo