Analyzer c-off-cpu


c-off-cpu - C-Land off-CPU Flame Graph

Resource Category


Application Type & Technical Stack

  • C/C++


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


Type: bool

Description: skip epoll_wait backtrace

Default Value: 0


Type: int

Description: sample time in seconds

Default Value: None

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-off-cpu -p PID

# trace a shell command directly
orxray analyzer run c-off-cpu -c SHELL_CMD

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

# trace any processes started from the specified executable path.
orxray analyzer run c-off-cpu --exe /path/to/exe/file

Tracing Multiple Processes


Output Formats

  • Flame Graphs


The OpenResty Inc. Team.

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