Re: [PATCH] kprobes for s390 architecture

Martin Schwidefsky
2006-07-11T14:13:21Z

On Tue, 2006-07-11 at 09:54 -0400, Mike Grundy wrote:
> I did a little measuring. On average stop_machine_run() adds 8.7 msec of
> overhead on a 4-way config. Of that %57 was sub-msec overhead. For the times
> where overhead was measurable, the average was 20.2 msec, lowest at 10msec
> highest at 100msec. That's on a z800 under vm and I have no idea how many real
> cpus the machine has :-)

So adding 100 probes will roughly take 1 second. Not too bad, I expected it
to take longer.

--
blue skies,
Martin.

Martin Schwidefsky
Linux for zSeries Development & Services
IBM Deutschland Entwicklung GmbH

"Reality continues to ruin my life." - Calvin.