'How to enable heap metrics for jfr via command line
I'm trying to run Java Flight Recorder using the jcmd binary located /Library/Java/JavaVirtualMachines/jdk1.8.0_121.jdk/Contents/Home/bin/jcmd (Mac OS X). Is there a command line option to enable heap metrics that corresponds to Heap Statistics option on the Start Flight Recording UI:
Solution 1:[1]
Running jcmd with settings=profile makes the recording include information about allocations. It doesn't exactly correspond to Heap Statistics as the other comment pointed out, but it lets you see allocation flame graphs in JMC which was what I was looking for coming here. See https://docs.oracle.com/javacomponents/jmc-5-5/jfr-command-reference/diagnostic-command-reference.htm#resourceid-15322-48C8362A
I had issues exporting templates as the other comment also suggested. If you want Heap Statistics, you can copy profile.jfc and enable it as explained in https://stackoverflow.com/a/55449770/12013214
Sources
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Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | WASDi |