[gs-bugs] [Bug 691599] New: huge performance difference between jpeg and bit device for xl-raster-file

bugzilla-daemon at ghostscript.com bugzilla-daemon at ghostscript.com
Tue Sep 7 13:57:48 UTC 2010


http://bugs.ghostscript.com/show_bug.cgi?id=691599

           Summary: huge performance difference between jpeg and bit
                    device for xl-raster-file
           Product: GhostPCL
           Version: trunk
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P4
         Component: PCL interpreter
        AssignedTo: henry.stiles at artifex.com
        ReportedBy: norbert.janssen at oce.com
         QAContact: gs-bugs at ghostscript.com
   Estimated Hours: 0.0
          Customer: 661


this is a followup on 691512.

The testfile contains 8bitRLEencoded raster images.

Though the MaxRasterBitmap improves the performance of the bit-device (from
15min to 1m46. This is still far away from the time needed for the jpeg-device
(11 secs).
Because of our legacy-pdl (prints in 5 secs) this is still a concern for us.
(with same testfiles as 691512).

measured relatively (on Cygwin platform):
time ufst-obj/pcl6 -sDEVICE=jpeg -sOutputFile=page%d.jpg -r600 -dNOPAUSE
-dMaxRasterBitmap=10000000 VZXP9TJ2.xl 
==> 0m11.639s)

time ufst-obj/pcl6 -sDEVICE=bit -sOutputFile=page%d.ras -r600 -dNOPAUSE
-dMaxRasterBitmap=10000000 VZXP9TJ2.xl 
==> 1m145.036s

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