Re: how to measure scheduler latency on powerpc? realfeel doesn't work due to /dev/rtc issues

Chris Friesen (cfriesen@nortelnetworks.com)
Fri, 09 May 2003 02:14:13 -0400

William Lee Irwin III wrote:

> Try the timebase instead.

The timestamp is not hard to get. The problem is getting a medium-frequency
(2KHz or so) hardware interrupt to drive the test.

On intel, you can do this by programming /dev/rtc. This does not work in powerpc.

Chris

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