nightswatch

/prof web endpoint for java async-profiler

compile

mvn clean install

run

export ASYNC_PROFILER_HOME=/path/to/async-profiler/release

To start the server (default port is 9898), run nightswatch script

./nightswatch

usage

• To collect CPU profile for a specific PID

curl "http://localhost:9898/prof?pid=12920"

• To collect CPU profile for a specific PID and output in tree format (html)

curl "http://localhost:9898/prof?output=tree&pid=12920"

• To collect heap allocation profile for a specific PID (replace the PID below with appropriate process) for 30s default duration. Following command returns FlameGraph output in svg format

curl "http://localhost:9898/prof?event=alloc&pid=12920"

• To collect lock contention profile for a specific PID (replace the PID below with appropriate process) for 10s

curl "http://localhost:9898/prof?event=lock&pid=12920&duration=10"