[cups.general] Should the CUPS Raster output device of Ghostscript output compressed or uncompressed Raster data?

[Michael Sweet]

On Jul 6, 2010, at 12:57 AM, Heino Goldenstein wrote:
> Hi,
> 
> Am Dienstag, 6. Juli 2010 02:53 schrieb Michael R Sweet:
> 
>> Compressing raster data on-system has a serious performance impact, more
>> than sending uncompressed data over the pipe.
> 
> this point is full understand, but in our use case the cups-raster data is
> transferred off-system via the printer connection (ethernet, usb,
> centronics, ...). The Bandwith at this link is an aspect for performance.
> One solution is to implement another compression algorithm in the
> rastertoidol script, but why reinvent the wheel if the solution is allready
> there and the only missing part is a mechanism to select it in an ppd?
> For further information please see:
> http://bugs.ghostscript.com/show_bug.cgi?id=689885#c7


Well, there currently is no way to select compressed raster from Ghostscript...  Given that you'd need to get support from all of the raster filters involved on different platforms (Ghostscript, pdftoraster, imagetoraster, and cgpdftoraster), you are probably better off rolling your own filter that writes compressed raster data (even if it does compressed CUPS raster...)

________________________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair