Understanding Request Latency with Profiling

This post discusses the challenges faced when investigating high response times in Java applications and introduces Datadog's Java wallclock profiler as a solution. The profiler helps improve request latency without making any code changes or even viewing the code. It covers topics such as transitioning from metrics to profiles, using async-profiler, implementing wallclock profiling, investigating latency, and considering cost implications. By using this profiler, developers can gain a complete picture of CPU time and understand latency better, leading to improved application performance.