Re: [PATCH 00/12] perf lock: New subcommand "perf lock", for analyzinglock statistics

From: Hitoshi Mitake
Date: Sat Jan 30 2010 - 07:00:23 EST

(2010å01æ29æ 23:34), Jens Axboe wrote:
On Fri, Jan 22 2010, Hitoshi Mitake wrote:
Adding new subcommand "perf lock" to perf.

I made this patch series on
latest perf/core of tip (ef12a141306c90336a3a10d40213ecd98624d274),
so please apply this series to perf/core.

I wanted to give this a go today, since I think it's pretty nifty and a
lot better than using /proc/lock_stat. But it basically spirals the
system into death [1]. How big a system did you test this on?

[1] Got this: [ 117.097918] hrtimer: interrupt took 35093901 ns

I tested this on Core i7 965 + 3GB DRAM machine.
Test program is mainly "perf bench sched messaging".

Could you tell me the detail of your test situation?


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