Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!psuvax1!brutus.cs.uiuc.edu!ginosko!uunet!timer1!fritz
From: fritz@timer1.UUCP (fritz)
Newsgroups: comp.lang.postscript
Subject: every fourth output missing
Keywords: every postscript output missing
Message-ID: <370@timer1.UUCP>
Date: 6 Oct 89 15:45:33 GMT
Organization: Rightime Econometrics Inc., Phila.
Lines: 30

I have several postscript files which are roughly 80000 bytes
long.  When I send them through a spooler, every fourth file
is non-existent, no page or anything.

When I send 13 of these, I get 1,2,3,5,6,7,9,10,11,13 printed.
If I shorten these files to 2500 bytes, I will get
1,2,3,8,9,10,14,15,16

I SUSPECT that an error occurs every fourth file and that the printer,
an NEC LC-890, dumps its buffer and reads until an EOF.  For large
files, the printer will dump its buffer and read to the end of the
fourth file.  For small files, (a few might be in the printer) the
printer will dump its buffer and read to EOF of the next file waiting.
In either case, after the printer starts printing again, the
cycle repeats itself.

If I change the order of the printouts, the same cycles are repeated.
This means that the unprinted files are actually printable.

Virtual memory usage in the printed files is at around 106000 of 240000.
Save nesting is 2.  No dictionaries are out of bounds.  stacks are not
out of bounds.  xon/xoff appears to be working properly.

If anyone has any advice, I would appreciate hearing from you.

Thank You,
fritz concannon
Rightime Econometrics, Inc.
uunet!timer1!fritz
Disclaimer:  Nothing I say can be construed as opinions of management