Overhead of collecting performance stats and publishing in JMX

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Dec 17, 2011, 4:23:53 PM12/17/11

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Hello,

I'm considering using this metrics package and I'm wondering if you have any idea or thoughts around the overhead of gathering performance stats.

I'm looking to gather information about performance of certain methods and publish those stats in JMX.

Thanks,
Otis

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Dec 17, 2011, 4:46:08 PM12/17/11

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At Yammer we use Metrics extensively and haven't noticed any performance drawbacks, even in areas sensitive to performance.

A single thread on my laptop can update a TimerMetric (which is composed of a histogram and a meter) roughly 4 million times a second.

Histograms (especially the ExponentiallyDecayingSample-backed ones) are the hot spot there.