jm + hdrhistogram   4

Developing a time-series "database" based on HdrHistogram
Histogram aggregation is definitely a sensible way to store this kind of data
storage  elasticsearch  metrics  hdrhistogram  histograms  tideways 
8 weeks ago by jm
Gil Tene on benchmarking
'I would strongly encourage you to avoid repeating the mistakes of testing methodologies that focus entirely on max achievable throughput and then report some (usually bogus) latency stats at those max throughout modes. The techempower numbers are a classic example of this in play, and while they do provide some basis for comparing a small aspect of behavior (what I call the "how fast can this thing drive off a cliff" comparison, or "pedal to the metal" testing), those results are not very useful for comparing load carrying capacities for anything that actually needs to maintain some form of responsiveness SLA or latency spectrum requirements.'

Some excellent advice here on how to measure and represent stack performance.

Also: 'DON'T use or report standard deviation for latency. Ever. Except if you mean it as a joke.'
performance  benchmarking  testing  speed  gil-tene  latency  measurement  hdrhistogram  load-testing  load 
april 2016 by jm
Monitoring Reactive Applications with Kamon
"quality monitoring tools for apps built in Akka, Spray and Play!". Uses Gil Tene's HDRHistogram and dropwizard Metrics under the hood.
metrics  dropwizard  hdrhistogram  gil-tene  kamon  akka  spray  play  reactive  statistics  java  scala  percentiles  latency 
may 2014 by jm

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