[gs-bugs] [Bug 690250] Performance slower than other PCL s/w

bugs.ghostscript.com-bugzilla-daemon at ghostscript.com bugs.ghostscript.com-bugzilla-daemon at ghostscript.com
Thu Mar 12 21:36:35 PDT 2009


------- Additional Comments From henry.stiles at artifex.com  2009-03-12 21:36 -------
Created an attachment (id=4840)
 --> (http://bugs.ghostscript.com/attachment.cgi?id=4840&action=view)

3 postscript test files for running on other rips.  clip_varies.ps modifies the
clipping region each time, it should break any caching in effect.  full_rect.ps
does not paint small lines each time, it paints a rectangle that extends beyond
the outer box of the clip each time, that should slow down the rip if clip path
construction is deferred until painting.  On the HP 4600 printer, both
postscript and pcl run the job with the large rectangles significantly slower
(1/2 speed), but the other two jobs (clip_varies.ps and plain.ps) run at the
same speed.  Some evidence for a deferred algorithm and not caching.  But HP
could be using a completely different algorithm.

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