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)