Java application in docker container and cpu data in pyroscope

Grafana Pyroscope
1

Hello,

I have a spring boot application that I want to run in a docker container and profile with pyroscope.
My Dockerfile is like this:

FROM eclipse-temurin:21.0.3_9-jre

RUN mkdir logs

ENV PYROSCOPE_APPLICATION_NAME=cart-api
ENV PYROSCOPE_PROFILING_INTERVAL=10ms
ENV PYROSCOPE_PROFILER_EVENT=cpu
ENV PYROSCOPE_PROFILER_LOCK=10ms
ENV PYROSCOPE_PROFILER_ALLOC=512k
ENV PYROSCOPE_UPLOAD_INTERVAL=15s
ENV PYROSCOPE_LOG_LEVEL=debug
ENV PYROSCOPE_SERVER_ADDRESS=http://pyroscope:4040

ADD pyroscope.jar /pyroscope.jar
ADD cart-api-0.0.1-SNAPSHOT.jar /app.jar

EXPOSE 8080
EXPOSE 8282

CMD java -javaagent:pyroscope.jar -jar -Dspring.profiles.active=hml /app.jar

My docker-compose is like this:

 app:
    build: app
    volumes:
      - ${LOGS_DIR}:/logs
    networks:
      - cart
    ports:
      - "8080:8080"
      - "8082:8082"
    depends_on:
      - tempo
    privileged: true

In the logs I can see messages like the following

2024-05-03 10:18:00.990 [DEBUG] Upload attempt 1 to http://pyroscope:4040/ingest?name=cart-api&units=samples&aggregationType=sum&from=1714731471&until=1714731480&spyName=javaspy&sampleRate=100&format=jfr. 2024-05-03T10:17:51.202126548Z 2024-05-03T10:18:00.925858080Z JFR: 1454545, labels: 0

which makes me believe that data is being sent to tempo. But when I look into pyroscope, the application seems to have only memory related information

image

Shouldn’t it have also the cpu related information? Is my configuration wrong?

2

I use PYROSCOPE_PROFILER_EVENT=itimer and that works for me, maybe try that