stressapptest(1) stress test application for simulating high load situations


stressapptest [options]


This manual page documents briefly the stressapptest command.

stressapptest (unix name for Stressful Application Test) is a program that tries to maximize randomized traffic to memory from processor and I/O, with the intent of creating a realistic high load situation in order to test the existing hardware devices in a computer.


This program supports the following options:

Run in degraded mode on incompatible systems.

-C <threads>
Number of memory CPU stress threads to run.

-d <device>
Add a direct write disk thread with block device (or file) 'device'.

-f <filename>
Add a disk thread with tempfile 'filename'.

Don't result check each transaction.

-i <threads>
Number of memory invert threads to run.

-l <logfile>
Log output to file 'logfile'.

-m <threads>
Number of memory copy threads to run.

-M <mbytes>
Megabytes of RAM to test.

-n <ipaddr>
Add a network thread connecting to system at 'ipaddr'.

-p <pagesize>
Size in bytes of memory chunks.

-s <seconds>
Number of seconds to run.

-v <level>
Verbosity (0-20), default is 8.

Use more CPU-stressful memory copy.

--blocks-per-segment <number>
Number of blocks to read/write per segment per iteration (-d).

--cache-size <size>
Size of disk cache (-d).

--cc_inc_count <number>
Number of times to increment the cacheline's member.

--cc_line_count <number>
Mumber of cache line sized datastructures to allocate for the cache coherency threads to operate.

Do the cache coherency testing.

Write/wipe disk partition (-d).

--filesize <size>
Size of disk IO tempfiles.

Find locations to do disk IO automatically.

Inject false errors to test error handling.

Inject a lot of false errors to test error handling.

Run threads that listen for incoming net connections.

Choose memory regions associated with each CPU to be tested by that CPU.

--max_errors <number>
Exit early after finding specified number of errors.

Only do ECC error polling, no stress load.

Run without checking for ECC or other errors.

--paddr_base <address>
Allocate memory starting from this address.

--pause_delay <seconds>
Delay (in seconds) between power spikes.

--pause_duration <seconds>
Duration (in seconds) of each pause.

--random-threads <number>
Number of random threads for each disk write thread (-d).

--read-block-size <size>
Size of block for reading (-d).

--read-threshold <time>
Maximum time (in us) a block read should take (-d).

--remote_numa <time>
Choose memory regions not associated with each CPU to be tested by that CPU.

--segment-size <size>
Size of segments to split disk into (-d).

Stop after finding the first error.

--write-block-size <size>
Size of block for writing (-d). If not defined, the size of block for writing will be defined as the size of block for reading.

--write-threshold <time>
Maximum time (in us) a block write should take (-d).


stressapptest was written by Nick Sanders and Rapahel Menderico (Google Inc).

This manual page was written by Michael Prokop <[email protected]> for the Debian project (and may be used by others).