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identify the unix processes performing high disk i/o reads and writes
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STRESSAPPTEST(1) General Commands Manual STRESSAPPTEST(1) NAME
stressapptest - stress test application for simulating high load situations SYNOPSIS
stressapptest [options] DESCRIPTION
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. OPTIONS
This program supports the following options: -A 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'. -F 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. -W 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. --cc_test Do the cache coherency testing. --destructive Write/wipe disk partition (-d). --filesize <size> Size of disk IO tempfiles. --findfiles Find locations to do disk IO automatically. --force_errors Inject false errors to test error handling. --force_errors_like_crazy Inject a lot of false errors to test error handling. --listen Run threads that listen for incoming net connections. --local_numa Choose memory regions associated with each CPU to be tested by that CPU. --max_errors <number> Exit early after finding specified number of errors. --monitor_mode Only do ECC error polling, no stress load. --no_errors 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_on_errors 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). SEE ALSO
http://code.google.com/p/stressapptest/ AUTHOR
stressapptest was written by Nick Sanders and Rapahel Menderico (Google Inc). This manual page was written by Michael Prokop <mika@debian.org> for the Debian project (and may be used by others). 2009-10-20 STRESSAPPTEST(1)
