Use arthas to profile fe

Introduce

Starting from Doris version 3.1.0, the Arthas tool (version 4.0.5) is included in the FE deployment directory ${DORIS_FE_HOME}/arthas. Arthas can be used to generate flame graphs, trace method call paths, output method execution times, observe method parameters and return values, and more. This makes it easier to diagnose various runtime issues in the FE process. For detailed usage instructions, please refer to the official Arthas documentation

note

Note: Currently, only Linux and macOS are supported. Windows is not supported yet.

Example: Generating a Flame Graph

1. Run the ${DORIS_FE_HOME}/arthas/as.sh script and select the DorisFE process:

   bash ./as.sh
   Arthas script version: 4.0.5
   Found existing java process, please choose one and input the serial number of the process, eg : 1. Then hit ENTER.
   * [1]: 75123 com.intellij.idea.Main
     [2]: 77285 org.apache.doris.DorisFE
     [3]: 76901 DorisBE
     [4]: 6776 org.jetbrains.jps.cmdline.Launcher
     [5]: 76265 DorisBE
     [6]: 80527 org.jetbrains.jps.cmdline.Launcher
   2

2. Start profiling:

   [arthas@77285]$ profiler start
   Profiling started

3. Stop profiling and generate a flame graph file named 20250627-115104.html:

   [arthas@77285]$ profiler stop --format html
   OK
   profiler output file: <DORIS_FE_HOME>/arthas-output/20250627-115104.html

Using Arthas in Older FE Versions

For versions prior to 3.1, you need to manually download Arthas:

wget https://github.com/alibaba/arthas/releases/download/arthas-all-4.0.5/arthas-bin.zip
unzip arthas-bin.zip -o ${DORIS_FE_HOME}/arthas