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.
AUTHOR
tiobench was written by James Manning <[email protected]>.
This manual page was written by Peter Palfrader <[email protected]>, for the Debian GNU/Linux system (but may be used by others).