cpu-profiling.md

CPU Profiling Guide

Profiling on host

Share an easy-to-use profiler and flamegraph tool: https://github.com/koute/not-perf.git

Record samples:

nperf record -p `pidof compute-node` -o perf.data

Generate flamegraph:

nperf flamegraph --merge-threads perf.data > perf.svg

Profiling remote compute nodes

You can profile remote compute nodes from a local machine by simply type the following command.

./risedev ctl profile cpu --sleep [seconds]

All compute nodes will be profile for a given seconds time and generated flame graph will be transferred to your local machine .risingwave/profiling/.

Note: To profile compute nodes remotely, please make sure all remote nodes have a public IP address accessible from your local machine (where you are running risedev).