Analyzer epoll-level-event-fgraph

# Name

epoll-level-event-fgraph - Epoll Level Trigger Event Flame Graph

# Resource Category

CPU.

# Application Type & Technical Stack

• C/C++

# Parameters

The following parameters (or global variables) can be overridden by the user when running the analyzer or tool:

# sample_time

Type: int

Description: total sampling time in seconds

Default Value: 0

# max_samples

Type: int

Description: Max http request samples to capture

Default Value: 1000

# 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 epoll-level-event-fgraph -p PID

# trace a shell command directly
orxray analyzer run epoll-level-event-fgraph -c SHELL_CMD

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

# trace any processes started from the specified executable path.
orxray analyzer run epoll-level-event-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.