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

[Jens Axboe]

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.

[snip]

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

-- 
Jens Axboe

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/