Subject: Re: HEADS UP: timecounters (branch simonb-timecounters) merged into
To: Frank Kardel <>
From: Perry E. Metzger <>
List: current-users
Date: 06/09/2006 16:20:09
Frank Kardel <> writes:
> What would be gain if we would solve the frequency issue for TSC?
> I think very little.
> Why ?
> Systems switching cpu frequency often are usually not interested in sub
> microsecond time stamps.

That's not true. I really would like to be able to use cycle counters
for time on my laptop for a number of reasons, including to be able to
deal with multimedia applications better and better timestamps for
profiling purposes.

> Given the above limitations and effects a lower frequency counters like
> the ACPI timer is just as good for those power saving environments.

How good is the ACPI timer?