Performance Sampling Command

The performance sampling function can detect the time consumption of various parts of the Dubbo processing link. When a timeout occurs, ( usageTime / timeout > profilerWarnPercent * 100 ) records the time consumption of calls through logs.

This function is divided into simple profiler and detail profiler two modes, where simple profiler mode is enabled by default, and detail profiler mode is disabled by default. Compared with the simple profiler mode, the detail profiler collects more time-consuming processing of each filter, specific time-consuming protocols, etc. In the simple profiler mode, if you find that there is a long time-consuming situation inside the Dubbo framework, you can enable the detail profiler mode to better troubleshoot the problem.

Reference link: Request time-consuming sampling

enableSimpleProfiler command

Enable simple profiler mode, enabled by default

dubbo>enableSimpleProfiler
OK

dubbo>

disableSimpleProfiler command

Turn off the simple profiler mode, and the detail profiler will not be enabled after it is turned off

dubbo>disableSimpleProfiler
OK

dubbo>

enableDetailProfiler command

Enable the detail profiler mode, which is disabled by default, you need to enable the simple profiler mode to actually enable it

dubbo>enableDetailProfiler
OK. This will cause performance degradation, please be careful!

dubbo>

disableDetailProfiler command

Turn off detail profiler mode, it will not affect simple profiler

dubbo>disableDetailProfiler
OK

dubbo>

setProfilerWarnPercent command

Set the warning percentage for the timeout

Command: setProfilerWarnPercent {profilerWarnPercent}

profilerWarnPercent: The warning percentage of the timeout period, the value range is 0.0 ~ 1.0, and the default value is 0.75

dubbo>setProfilerWarnPercent 0.75
OK

dubbo>