Comment 42 for bug 1761379

On bionic LGTM:

$ lsb_release -a | fgrep Codename
Codename: bionic
$ uname -a
Linux guest 4.15.0-53-generic #57-Ubuntu SMP Thu Jun 13 09:28:40 UTC 2019 ppc64le ppc64le ppc64le GNU/Linux
$ java -version
openjdk version "11.0.3" 2019-04-16
OpenJDK Runtime Environment (build 11.0.3+7-Ubuntu-1ubuntu218.04.1)
OpenJDK 64-Bit Server VM (build 11.0.3+7-Ubuntu-1ubuntu218.04.1, mixed mode)

$ sudo apt-get install -y linux-tools-$(uname -r)/bionic-proposed

cat << EOF > hello.java
class hello {
  static void printX() {
    System.out.printf("X");
  }

  public static void main(String[] args) {
  int i;
  for (i=0; i < 64000; i++)
    printX();
  }
}
EOF

$ javac hello.java
$ sudo perf record -k 1 -e instructions:u java -agentpath:/usr/lib/linux-tools-4.15.0-53/libperf-jvmti.so hello > /dev/null
java: jvmti: jitdump in /home/user/.debug/jit/java-jit-20190620.XXH3rSWT/jit-4232.dump
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.136 MB perf.data (3368 samples) ]
$ sudo perf inject -i ./perf.data -j -o ./perf.data.jitted
$ sudo perf report -f -i ./perf.data.jitted |& fgrep printX
     0.38% java jitted-4232-595.so [.] class hello.printX()