bjdump: /tmp/perf-$pid.map: File format not recognized ▒

[cyberspicecai]

Hi, Brendan

 thanks for your powerfull tool of flamegraph.

 I follow your guide of "Java Performance Analysis on Linux with Flame Graphs" at 2016.  I have one strange issue: /tmp/perf-$pid.map is not recognized.
How to reproduce:

1, use mvn package to compile the jmh-benchmark https://github.com/mkyong/jmh-benchmark.git
2, 2.1 numactl -C 3 -m 0 java -jar target/benchmarks.jar loopFor #run the test case. loopFor is one benchmark case.
or this method:
2.2 perf record -v -g -k 1 numactl -C 3 -m 0 java -agentpath:/usr/lib64/libperf-jvmti.so -jar target/benchmarks.jar loopFor
or your method: add this option of -XX:+PreserveFramePointer
2.3 perf record -v -g -C 3 numactl -C 3 -m 0 java -XX:+PreserveFramePointer -jar target/benchmarks.jar loopFor
3, perf and output the mapt of the threads which is from pgrep java
4, ./create-java-perf-map.sh 3490983 -F 99 #to output the java jit map.
5, perf report -i /tmp/pid-3490983.data will show the error.

thanks a lot .
Cyberspice