jlfwong / jlfwong/speedscope

Format Support: concatenated output from many calls to jstack

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Description

Poor man's profiling of a JVM:
```
$ for i in `seq 1 300`;do jstack $(pgrep java) > $i.jstack;sleep 1;done;zip profile.zip *.jstack;rm *.jstack
```
...and then uploading `profile.zip`. I'm tired of opening up traffic for profiling to production and/or building lots of tooling around it. `jstack` (and shell) is always availalable.

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