Setup guide

2 Uncomment the Preallocation parameter in the section that
configures the respective partition (for example [Partition7]).
3 Change the parameter value from the default NONE to the pre-allocation
method you want to use. For example:
Preallocation=RESERVE
4 Save the configuration file and restart Stone and Wire.
NOTE If you are using XFS and unwritten extent flagging was disabled when
creating the filesystem, the RESERVE pre-allocation method is not available for it.
For more information about unwritten extent flagging, consult the Man page for
mkfs.xfs. Type man mkfs.xfs in a terminal.
Testing Filesystem Performance
Each standard filesystem comes with its own set of tools to measure
performance.
XFS comes with the xfs_db command line tool for troubleshooting various
aspects of the filesystem, including fragmentation. For information on using
the xfs_db tool, consult the man page for xfs_db.
Stone and Wire comes with a command line tool to measure filesystem
performance called sw_io_perf_tool. This tool simulates I/O requests (audio
and/or video) that would be issued by the Visual Effects and Finishing
application, and reports the throughput and maximum latency of all the
requested I/O operations.
Use sw_io_perf_tool to measure read and write performance of a volume declared
and mounted by Stone and Wire. Several options are available to simulate
many file formats and writing/reading patterns. Launching the command will
display a list of available options.
NOTE To list all options available for sw_io_perf_tool, open a terminal and type
/usr/discreet/sw/tools/sw_io_perf_tool -h.
To test a standard filesystem partition's performance for a specific resolution:
1 Go to the directory /usr/discreet/sw/tools and type:
./sw_io_perf_tool <-p #> <options>
Where <-p #> specifies a partition ID (0 to 7), and<options> can be a
combination of several media format attributes.
Visual Effects and Finishing Standard Filesystem Maintenance | 213