jmap -heap 3051
Attaching to process ID 3051, please wait...
Error attaching to process: sun.jvm.hotspot.debugger.DebuggerException: Can't attach to the process
解决:执行下面的命令:
echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope
然后就可以用了
jmap -heap 3051
echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope