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 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.
stress 1.0.1 August 2009 STRESS(1)
Check Out this Related Man Page
ffcfstress(1) General Commands Manual ffcfstress(1)NAME
ffcfstress - constant force stress test for force-feedback devices
SYNOPSIS
ffcfstress [-d <device>] [-u <update rate>] [-f <frequency>] [-a <amplitude>] [-s <strength>] [-o]
DESCRIPTION
ffcfstress stress tests constant non-enveloped forces on a force feedback device. It simulates a moving spring force by applying a fre-
quently updated constant force effect.
Beware, the stress test may damage your device!
OPTIONS
At least one option is required.
-d <device>
The device to test (by default /dev/input/event0).
-u <update rate>
The update rate in Hz (25 by default).
-f <frequency>
The spring center motion frequency in Hz (0.1 by default).
-a <amplitude>
The spring center motion amplitude, between 0.0 and 1.0 (1.0 by default).
-s <strength>
The spring strength factor (1.0 by default).
-o Dummy option, useful when all defaults should be used.
SEE ALSO ffmvforce(1), fftest(1), jstest(1).
AUTHOR
ffcfstress was written by Oliver Hamann.
This manual page was written by Stephen Kitt <steve@sk2.org>, for the Debian GNU/Linux system (but may be used by others). It was last
modified for ffcfstress dated February 15, 2002.
ffcfstress March 8, 2009 ffcfstress(1)
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