---
name: "cpuwalk.d"
section: "1m"
platform: "macos"
package: "dtrace"
version: "413"
release: "macOS 26.5"
platforms: ["macos"]
url: "https://new.carta.tech/cpuwalk.d"
---

# cpuwalk.d(1m)

Measure which CPUs a process runs on. Uses DTrace.

## NAME

cpuwalk.d - Measure which CPUs a process runs on. Uses DTrace.

## SYNOPSIS

**cpuwalk.d \[duration\]**

## DESCRIPTION

This program is for multi-CPU servers, and can help identify if a process is running on multiple CPUs concurrently or not.

A duration may be specified in seconds.

Since this uses DTrace, only users with root privileges can run this command.

## EXAMPLES

- this runs until Ctrl-C is hit,

  \#  **cpuwalk.d**

- run for 5 seconds,

  \# **cpuwalk.d** 5

## FIELDS

- PID

  process ID

- CMD

  process name

- value

  CPU id

- count

  number of samples (sample at 100 hz)

## DOCUMENTATION

See the DTraceToolkit for further documentation under the  Docs directory. The DTraceToolkit docs may include full worked examples with verbose descriptions explaining the output.

## EXIT

cpuwalk.d will run until Ctrl-C is hit, or the duration specified is reached.

## SEE ALSO

threaded.d(1M), dtrace(1M)