/var/psf/seglist and /var/psf/segments with Input Manager

For InfoPrint Manager actual destinations defined with the PSF DSS, InfoPrint Manager uses /var/psf/seglist and /var/psf/segments (by default) for storing all the AFP, including AFP resulting from the transform of all datatypes (or in InfoPrint Manager terminology, document formats), except ASCII (meaning Proprinter or Quietwriter ASCII, or flat ASCII that cannot be formatted with a page definition through ACIF).

The Input Manager segments incoming jobs once they have been transformed to AFP, or if they come in as AFP, to create smaller pieces. These pieces can then begin to print before a file is entirely transformed, leading to faster first-page-out time. It is more of an advantage for files that need to be transformed (such as PostScript, PCL, PDF, and so forth) than for files that are already in AFPDS or MO:DCA format.

When Input Manager segments the file, it creates a segment list (a list of all the segments) in /var/psf/seglist and the segments themselves, which are by default, 5000K chunks of AFP, in /var/psf/segments. The default segment size of 5000K is probably acceptable for most environments. See PSF (/var/psf/segments) for more information about segment size.

The first segment of a job contains all of the inline resources associated with the job. It is called xxx.seg0. If this segment does not exist for a job, the job does not have any inline resources.