Setup guide

exportPath Export path as entered in the application UI.
namingPattern List of optional naming tokens as entered in the application UI.
resolvedPattern Full path to the first frame that will be exported with all the tokens resolved.
firstFrame Frame number of the first frame that will be exported
lastFrame Frame number of the last frame that will be exported.
return Value A new exportPath. Empty strings or non-string return values are ignored, while invalid paths
cause the export to fail with a path error.
void batchExportEnd( string nodeName, string exportPath, string resolvedPattern, int firstFrame, int
lastFrame, string gatewayClipPath, int versionNum, bool aborted )
This hook is called when an export ends. This function is a complements the batchExportBegin function
described above. For stereo export this function is called twice (once for the left channel, and then once for
the right channel). If the function returns a valid path, the exported files are exported to that path.
nodeName Name of the export node.
exportPath Export path as entered in the application UI.
resolvedPattern Full path to the first frame that will be exported with all the tokens resolved.
firstFrame Frame number of the first frame that will be exported.
lastFrame Frame number of the last frame that will be exported.
gatewayClipPath Path to the gateway clip (empty if not created).
versionNum Current version number of export (0 if unversioned).
aborted True if the user aborted the export before it was complete.
Standard filesystem maintenance
Performance of a filesystem depends on a number of factors, including the following:
■ Hardware and operating system
■ Fragmentation. Fragmentation is a phenomenon that consists of a file being broken into several blocks,
which are stored in non-contiguous sectors on the disk. This decreases filesystem performance, as it takes
a lot of time to retrieve and reassemble the scattered pieces of the file before making it usable.
■ I/O sizes
■ Filesystem and tuning parameters. Standard filesystems tuned for a specific file format can under-perform
for other file formats. For instance, a filesystem optimized and capable of delivering real-time performance
for 2K 10-bit DPX files delivers lower real-time performance for SD media.
■ Free space available and fill rate
■ Locality of reference. This principle states that files used in the context of the same application or
procedure (for example, consecutive frames in a timeline) should be as close to each other as possible
on the disk, in order to minimize seek times between two successive I/O operations. Locality of reference
is good in the case of frames written on an empty partition, and decreases as the filesystem fills up and
becomes fragmented.
■ Concurrent I/O and metadata operations
■ Number of I/O threads and processes in use at a given time. Multi-threaded I/O is the use of multiple
parallel I/O threads within a disk read process. This method allows the RAID array to optimize the fetching
of multiple blocks of data.
Software configuration | 39