Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!timer1!fritz
From: fritz@timer1.UUCP (fritz)
Newsgroups: comp.lang.postscript
Subject: Postscript Printer Speed less than ratings
Keywords: Speed memory programming time timing
Message-ID: <372@timer1.UUCP>
Date: 7 Dec 89 20:58:03 GMT
Organization: Rightime Econometrics Inc., Phila.
Lines: 51

I have a NEC LC-890 with 1 Meg memory running in Postscript Batch mode. 
at 19200 on a serial line.

It takes approximately 60 seconds to print a 45K chart in this format

.
.
.
/L {lineto} def
/LS {lineto stroke} def
/M {moveto} def
.
.
.

# # M # # L
# # L
# # L
# # L
.
.
.
# # LS %stroke every 100 L's to keep stack small
# # M # # L
# # L
# # L
# # L
.
.
.
showpage

##########
I do not think that the Printer is doing all that much "processing" since
it is just moving around.  The printer is rated at 6-8 Pages Per minute.
I would expect the bottleneck to be in the paper feed and print phase.
I would also expect the printer to do some processing while it is printing
so that 10 charts sequentially would take less time that 10*1_chart.

How can I speed this thing up?  More memory?  Why?  Better Programming?  How?

Is there something that can precede the chart to take better advantage of
the machine?



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