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STRESS(1)                        User Commands                       STRESS(1)

NAME
       stress - tool to impose load on and stress test systems

SYNOPSIS
       stress [OPTION [ARG]] ...

DESCRIPTION
       `stress' imposes certain types of compute stress on your system

       -?, --help
              show this help statement

       --version
              show version statement

       -v, --verbose
              be verbose

       -q, --quiet
              be quiet

       -n, --dry-run
              show what would have been done

       -t, --timeout N
              timeout after N seconds

       --backoff N
              wait factor of N microseconds before work starts

       -c, --cpu N
              spawn N workers spinning on sqrt()

       -i, --io N
              spawn N workers spinning on sync()

       -m, --vm N
              spawn N workers spinning on malloc()/free()

       --vm-bytes B
              malloc B bytes per vm worker (default is 256MB)

       --vm-stride B
              touch a byte every B bytes (default is 4096)

       --vm-hang N
              sleep N secs before free (default none, 0 is inf)

       --vm-keep
              redirty memory instead of freeing and reallocating

       -d, --hdd N
              spawn N workers spinning on write()/unlink()

       --hdd-bytes B
              write B bytes per hdd worker (default is 1GB)

       Example: stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 10s

       Note: Numbers may be suffixed with s,m,h,d,y (time) or B,K,M,G (size).

SEE ALSO
       The full documentation for stress is maintained as a Texinfo manual.
       If the info and stress programs are properly installed at your site,
       the command

              info stress

       should give you access to the complete manual.

stress 1.0.4                      March 2010                         STRESS(1)