stress
A tool to stress test CPU, memory, and IO on a Linux system.
TLDR
Spawn 4 workers to stress test CPU
Spawn 2 workers to stress test IO and timeout after 5 seconds
Spawn 2 workers to stress test memory (each worker allocates 256M bytes)
Spawn 2 workers spinning on write()/unlink() (each worker writes 1G bytes)
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.
