CpuStres v2.0

By Pavel Yosifovich

Published: July 18, 2018

Download Download Cpustres (2.2 MB)


Cpustres is a utility that can be used to simulate CPU activity by running up to 64 threads in a tight loop.

Each thread can be started, paused or stopped independently and can be configured with the following parameters:

  • Activity Level This can be Low, Medium, Busy or Maximum which controls how long the thread sleepss between cycles. Setting this value to Maximum causes the thread to run continuously.
  • Priority This controls the thread priority. Refer to Windows Internals by Mark Russinovich for details on thread priorities

Runs on:

  • Client: Windows Vista and higher
  • Server: Windows Server 2003 and higher
  • Nano Server: 2016 and higher
  • Windows Internals Book The official updates and errata page for the definitive book on Windows internals, by Mark Russinovich and David Solomon.
  • Pavel's Blog Pavel Yosifovich's blog describing the tool


DownloadDownload Cpustres (2.2 MB)
Run now from Sysinternals Live.