stress - Online in the Cloud

PROGRAM:

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).

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