STRESS
Section: User Commands (1)
Updated: March 2010
Page Index
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.