On Fri, Aug 26, 2016 at 04:55:34PM -0700, Adrian Chadd wrote:
> Hi,
>
> I use the kernel lock profiling debugging,
I am already have 100% utilise all CPU cores, I think this is drop
performance?
> but you can use dtrace to
> get an idea:
>
> dtrace -n 'lockstat:::adaptive-block { @[stack()] = sum(arg1); }'
How to interpret results (how to distinct lock contention from lock
cost/overhead (LOCK CMPXCGQ is very expensive))?
> (https://wiki.freebsd.org/DTrace/One-Liners)
>
>
>
> -adrian
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