Messages in this thread | | | Subject | Re: [PATCH] kprobes for s390 architecture | From | Martin Schwidefsky <> | Date | Tue, 11 Jul 2006 16:13:18 +0200 |
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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.
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