Analyzer libc-chunks

# Name

libc-chunks - Distributions of Memory Chunk Sizes of the Memory Allocator

This analyzer profiles memory allocation patterns by capturing the distribution of memory chunk sizes requested from the system memory allocator (such as glibc malloc or jemalloc). It samples memory allocation calls and records the sizes of allocated chunks. The analyzer generates histogram charts that show the frequency distribution of different allocation sizes, helping identify memory usage patterns, detect unusual allocation behaviors, and optimize memory allocation strategies in C/C++ applications.

# 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 libc-chunks -p PID

# trace a shell command directly
orxray analyzer run libc-chunks -c SHELL_CMD

# Tracing Multiple Processes

Not supported.

# Output Formats

• Histogram Bar Charts
• Plain Texts

# Author

The OpenResty Inc. Team.

# Copyright

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