Dan Luu • 1/24/2016

Sampling v. tracing

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This article argues that while sampling profilers are popular and low-overhead, they are ineffective for debugging tail latency issues common in distributed systems like Google search. It explains how tail latency impacts revenue and introduces Google's performance tracing framework, which captures every event, as a superior tool for diagnosing these complex performance problems.

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#performance #profiling #latency
Sampling v. tracing

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