src/vmEntry.cpp#L107 seems problematicly getting the wrong property java.vm.version

[heoq]

It seems that the correct property should be java.vm.specification.version now?

https://github.com/async-profiler/async-profiler/blob/master/src/vmEntry.cpp#L107

java.vm.compressedOopsMode	Zero based
java.vm.specification.vendor	Oracle Corporation
java.vm.specification.name	Java Virtual Machine Specification
java.vm.vendor	Eclipse Adoptium
java.vm.specification.version	21
java.vm.name	OpenJDK 64-Bit Server VM
java.vm.info	mixed mode, sharing
java.vm.version	21+35-LTS

[apangin]

java.vm.version is the intended property. What's wrong with that?

[heoq]

@apangin Thanks for the quick response! On the version I mentioned above, running

profiler.sh --alloc 500k --live -d 60 <pid> -f test_live.collapsed

gave the error:

[ERROR] 'live' option is supported on OpenJDK 11+

[heoq]

I checked with a snippet that

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[])
{
    printf("%d\n", atoi("21+35-LTS"));
    return 0;
}

does return 21. Maybe there is some other reason that I cannot profile live objects on Openjdk21

[apangin]

What profiler version do you use?
profiler.sh suggests it's not the latest version, because there is no more profiler.sh in async-profiler 3.0.

Also, check grep asyncProfiler /proc/PID/maps if it contains multiple profiler versions already loaded into the process.

[heoq]

Yeah with with async profiler 3.0 in a clean enviroment I get the live alloc profile now. Maybe earlier I messed up some older version installed from the yum repo. Thank you for the help!