java profiling not resolving user space symbols #516
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We’ve improved the eBPF-based profiler for Java applications. To take full advantage of it, make sure the JVM is started with the -XX:+PreserveFramePointer option: https://docs.coroot.com/profiling/ebpf-based-profiling#java |
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From which coroot version this eBPF based java profiler is available. |
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Hi,
Trying to integrate java profiling in coroot. I dont see it available yet so started the POC.
Running a java prog (opening and closing file in a loop), perf_event tool and ubuntu bcc (bpfcc) in a same container. Java symbols are generated using perf_event tool and placed at
/tmp/perf-${PID}.mapfile. Now using command/sbin/profile-bpfcc -adf -p $PID 30while trying to generate the profile data, we can see the kernel space symbols are coming in profile file but all user space symbols are missingb'__x64_sys_write_[k]' b'do_syscall_64_[k]' b'entry_SYSCALL_64_after_hwframe_[k]' -- [unknown] [unknown] [unknown]Used different options in the
profile-bpfcccommand but no luck. Can anybody please help.Beta Was this translation helpful? Give feedback.
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