tiobench(1) tiobench(1)
NAME
tiobench - Threaded I/O bench
SYNOPSIS
tiobench [--help] [--nofrag] [--size SizeInMB [--size ...]] [--numruns NumberOfRuns [--numruns ...]] [--dir TestDir [--dir ...]]
[--block BlkSizeInBytes [--block ...]] [--random NumberRandOpsPerThread [--random ...]] [--threads NumberOfThreads [--threads ...]]
DESCRIPTION
tiobench is a perl wrapper to tiotest calling it multiple times with varying sets of parameters as instructed.
OPTIONS
--help Display a brief help and exit.
--nofrag
Instructs tiobench to pass -W to tiotest so it waits for previous threads to finish before starting a new one in the writing phase.
For more info see the -W option in the tiotest(1) manpage.
--size SizeInMB
The total size in MBytes of the files may use together. If this option is not given, tiobench tries to be smart and figure out a
size making sense.
--numruns NumberOfRuns
This number specifies over how many runs each test should be averaged. Defaults to 1.
--dir TestDir
The directory in which to test. Defaults to ., the current directory.
--block BlkSizeInBytes
The blocksize in Bytes to use. Defaults to 4096.
--random NumberRandOpsPerThread
Random I/O operations per thread. Defaults to 1000.
--threads NumberOfThreads
The number of concurrent test threads. Defaults to 4.
The options --size, --numruns, --dir, --block, --random, and --threads may be given multiple times to cover multiple cases, for instance:
tiobench --block 4096 --block 8192 will first run through with a 4KB block size and then again with a 8KB block size.
To get usefull results the used file sizes should be a lot larger than the physical amount of memory you have. A good idea is to boot with
16 Megs of RAM (Try passing the "mem=16M" option to the kernel to limit Linux to using a very small amount of memory) and into Single User
mode only.
SEE ALSO
tiotest(1), bonnie(1), hdparm(8)
AUTHOR
tiobench was written by James Manning <jmm@computer.org>.
This manual page was written by Peter Palfrader <weasel@debian.org>, for the Debian GNU/Linux system (but may be used by others).
Mar-2001 tiobench(1)
