Analyzer file-system-fgraph

# Name

file-system-fgraph - File System Flame Graph

This analyzer profiles file system operations across all application stacks, capturing I/O activity including reads, writes, and metadata operations. It traces system calls related to file access and generates flame graphs visualizing the distribution of file system latency across different code paths. The analyzer helps identify disk I/O bottlenecks and optimize file access patterns in production systems.

# Resource Category

Disk I/O.

# 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 file-system-fgraph -p PID

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

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

# trace any processes started from the specified executable path.
orxray analyzer run file-system-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.