Analyzer c-alloc-fgraph

# Name

c-alloc-fgraph - C Memory Allocation Flame Graph

This analyzer profiles memory allocation patterns in C-land code across various applications. It captures stack traces at memory allocation points and generates flame graphs that visualize memory allocation distribution across function calls. The analyzer helps identify memory allocation hotspots and understand memory usage patterns in native code, supporting both standard malloc and jemalloc allocators.

# Resource Category

Memory.

# Application Type & Technical Stack

• All

# 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 c-alloc-fgraph -p PID

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

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

# trace any processes started from the specified executable path.
orxray analyzer run c-alloc-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.