2011

iteration=<i> where <i> indicates the number of times the test is repeated.
File System
The file system tests are invoked by the -fs switch. These tests consist of
opening files, closing files, listing directories, verifying the existence of files,
creating files, and deleting files.
The behavior of file-system tests is controlled by the following sub-options:
■ files
■ subdir
■ location
files=<n> where <n> is the number of files to create. This suboption measures
the speed at which files can be created and the number of creations which
can be done per second, then verifies the existence of each file to measure the
performance of determining a file's existence. Once all files are verified, each
file is opened, then all files are closed and timing data for closing files is
collected. The last three operations—verifying the existence of files, opening
files, and closing files—are be performed in various orders (sequential, reverse,
random, butterfly). The default is 256 files.
subdir=<l> where <l> is the number of subdirectory levels. This suboption
indicates that files created by the test will be spread across a directory tree of
depth <l>. The default is to create a flat directory structure. Valid range is
from 1 to 16.
loc=<path> where <path> indicates where files will be created. A directory
will be created below <path>. That directory will contain all the files created
during the execution of the tool. When the tool finishes its execution, the
created subdirectory will be destroyed along with all its contents. The default
is specified by the TMP environment variable.
Content Server
The content server tests is invoked with the -content switch. Content server
will measure read and write operations using the Composite content server.
Collected data on I/O will include average throughput, sustained throughput
and average/min/max latency.
864 | Appendix B Composite Executables