Analyzer lua-excep-fgraph

# Name

lua-excep-fgraph - Lua-Land Exception Flame Graph for standard Lua

This analyzer profiles exception occurrences in Lua-land code execution within standard Lua applications and Redis with Lua scripting. It captures stack traces when Lua errors or exceptions are raised during execution. The analyzer generates flame graphs that visualize exception frequency and their call paths, helping identify error-prone code sections and exception handling issues in Lua applications.

# Resource Category

CPU.

# Application Type & Technical Stack

• Lua
• Redis

# Command Line Syntax

The analyzer can be invoked directly on the command-line via the orxray utility from the openresty-xray-cli software package.

Alternatively, the analyzer can also be invoked manually or automatically on the web console UI of OpenResty XRay (like on the Advanced web page).

# PID is the target process PID.
orxray analyzer run lua-excep-fgraph -p PID

# trace a shell command directly
orxray analyzer run lua-excep-fgraph -c SHELL_CMD

# PGID is the process group ID or any process's PID within the target process
# group.
orxray analyzer run lua-excep-fgraph -p -PGID

# trace any processes started from the specified executable path.
orxray analyzer run lua-excep-fgraph --exe /path/to/exe/file

# Tracing Multiple Processes

Supported.

# Output Formats

• Flame Graphs

# Author

The OpenResty Inc. Team.

# Copyright

Copyright (C) by OpenResty Inc. All rights reserved.