Projects / stress


stress is a workload generator and stress tester for Unix-like systems. It will impose user-specified amounts of CPU, I/O, RAM, and HDD load and report any errors it detects. It is used for automated stress testing and for debugging system components that fail only or more often when under load. It runs on x86, PPC64, and PPC 32 GNU/Linux, Tru64, SPARC Solaris, and other platforms.

Operating Systems

Recent releases

  •  03 Dec 2009 01:14

    Release Notes: This release makes the output work with tee. It fixes compilation on AIX.

    •  26 Oct 2009 05:45

      Release Notes: Randomization of disk stress was improved. Minor cleanups were done.

      •  17 Dec 2007 03:32

        Release Notes: This release tries to detect memory corruption.

        •  08 Dec 2005 20:40

          Release Notes: An option was added to write over existing memory, as experimental results submitted by IBM indicated that stress was exercising the swap write-out path far more than the read-in path. Also, a small bugfix was made to the year suffix calculation.

          •  30 Jun 2005 23:11

            Release Notes: This release adds the ability to stride through memory in increments of greater than a single byte, and to wait a specified number of seconds before releasing memory.

            Recent comments

            09 Feb 2011 09:11 Saravankm

            Very effective test and helps detect hardware platforms errors in less time. Thanks for the cool tool.


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