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Get Method Sampling from Java Flight Recorder Dump and convert to FlameGraph compatible format.

Results 8 jfr-flame-graph issues
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I needed to convert some jfr files to flamegraphs so I went ahead and fixed this. fixes #14

The JFR call stack is in a bottom-up style while this flame graph is top-down. When we observe flame graph it's not straightforward for us to compare the 2 charts....

getting `No Java Mission Control found` error

With java 9 jrockit jars changed name. This making incompatibility with jfr-flame-graph

enhancement

iI just leave an incorrect version in the file. ``` cat jmc_version.properties jmc.version=* ``` Another question that came with it. How can com.jrockit.mc.common be procurred? Is com.oracle.jmc.core be use insteed?

bug

I am still hitting JFR parse issue. I am sure this is not gzip jfr file. sudo -u storageos /usr/lib64/jvm/java-1.8.0-oracle/bin/jcmd `pidof blobsvc` JFR.start settings=profile name=blob_test.jfr filename=/var/log/blob_test.jfr duration=60s provo-tangelo:/usr/lib64/jvm/java-oracle/bin # create_flamegraph.sh...

It looks like @oehme has already done this for Gradle's profiler: https://mvnrepository.com/artifact/com.github.oehme/jfr-flame-graph It would be nice if there were an official release.