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Enable Perf JITEvents by default #37682

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merged 3 commits into from
Oct 2, 2020
Merged

Enable Perf JITEvents by default #37682

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fdbc86e
default to USE_PERF_JITEVENTS=1
vchuravy Sep 18, 2020
fdfac75
allow users to enable GDB JIT integration on release builds
vchuravy Sep 21, 2020
b2220ed
Update perf docs a bit
vchuravy Sep 21, 2020
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Update perf docs a bit
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@vchuravy
vchuravy committed Sep 21, 2020
commit b2220ed2e074b00621693964df13b549e1ad6154
2 changes: 2 additions & 0 deletions doc/src/manual/environment-variables.md
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Expand Up @@ -313,6 +313,8 @@ event listener for just-in-time (JIT) profiling.
(`USE_INTEL_JITEVENTS` set to `1` in the build configuration), or
* [OProfile](http:https://oprofile.sourceforge.net/news/) (`USE_OPROFILE_JITEVENTS` set to `1`
in the build configuration).
* [Perf](https://perf.wiki.kernel.org) (`USE_PERF_JITEVENTS` set to `1`
in the build configuration). This integration is enabled by default.

### `ENABLE_GDBLISTENER`

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3 changes: 2 additions & 1 deletion doc/src/manual/profile.md
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Expand Up @@ -342,7 +342,8 @@ Or similary with `perf` :

```
$ ENABLE_JITPROFILING=1 perf record -o /tmp/perf.data --call-graph dwarf ./julia /test/fastmath.jl
$ perf report --call-graph -G
$ perf inject --jit --input /tmp/perf.data --output /tmp/perf-jit.data
$ perf report --call-graph -G -i /tmp/perf-jit.data
```

There are many more interesting things that you can measure about your program, to get a comprehensive list
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