update docs

fandreuz · fandreuz · commit a90b3471de55 · 2025-06-11T23:35:08.000+02:00
diff --git a/docs/OutputFormats.md b/docs/OutputFormats.md
@@ -58,3 +58,6 @@ async-profiler currently supports the following output formats:
   about the JVM as well as the Java application running on it. async-profiler can generate output in `jfr` format
   compatible with tools capable of viewing and analyzing `jfr` files. JDK Mission Control (JMC) and Intellij IDEA are
   some of many options to visualize `jfr` files. More details [here](JfrVisualization.md).
+
+- `otlp` - OpenTelemetry protocol format for [profiling data](https://opentelemetry.io/blog/2024/profiling). Support for this output format should be considered experimental, backword-incompatible
+changes may happen in future releases of Async-Profiler.
diff --git a/docs/ProfilerOptions.md b/docs/ProfilerOptions.md
@@ -114,5 +114,6 @@ By default, async-profiler merges stack traces starting from the outermost (e.g.
 - `flamegraph` - produce Flame Graph in HTML format.
 - `tree` - produce Call Tree in HTML format.
   - `--reverse` option will generate backtrace view.
+- `otlp` - dump events in OpenTelemetry format.
 
 It is possible to specify multiple dump options at the same time.
diff --git a/src/arguments.cpp b/src/arguments.cpp
@@ -69,6 +69,7 @@ static const Multiplier UNIVERSAL[] = {{'n', 1}, {'u', 1000}, {'m', 1000000}, {'
 //     jfrsync[=CONFIG] - start Java Flight Recording with the given config along with the profiler
 //     traces[=N]       - dump top N call traces
 //     flat[=N]         - dump top N methods (aka flat profile)
+//     otlp             - dump in OpenTelemetry format
 //     samples          - count the number of samples (default)
 //     total            - count the total value (time, bytes, etc.) instead of samples
 //     chunksize=N      - approximate size of JFR chunk in bytes (default: 100 MB)
diff --git a/src/main/main.cpp b/src/main/main.cpp
@@ -55,7 +55,7 @@ static const char USAGE_STRING[] =
     "  -g, --sig         print method signatures\n"
     "  -a, --ann         annotate Java methods\n"
     "  -l, --lib         prepend library names\n"
-    "  -o fmt            output format: flat|traces|collapsed|flamegraph|tree|jfr\n"
+    "  -o fmt            output format: flat|traces|collapsed|flamegraph|tree|jfr|otlp\n"
     "  -I include        output only stack traces containing the specified pattern\n"
     "  -X exclude        exclude stack traces with the specified pattern\n"
     "  -L level          log level: debug|info|warn|error|none\n"
