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 is 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)

--hdd-noclean
    do not unlink files created by hdd workers

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.