[K12OSN] Slow printing

Michael Wescott wescott_mike at emc.com
Thu Sep 16 13:37:07 UTC 2004

On  Thu, 16 Sep 2004  Les Mikesell wrote:
> On Wed, 2004-09-15 at 23:50, Sudev Barar wrote:
> > Will report the results, in the meanwhile any one else found this
> > problem and any suggested solutions? For record Lasers on /dev/lp0 run
> > equally fast under both OS.
> The problem in general is that unix/Linux applications tend
> to generate postscript, so printing to non-postscript printers
> involves passing through ghostscript, consuming CPU to create
> a bulky raster image, then often pushing the image through
> an inefficient character device like a parallel or usb port.
> Using a postscript-capable device with its own network
> connection eliminates a lot of overhead on the server, but
> it is more expensive.

There are even some cases where, for consistency's sake, cups will
take postscript, rasterize it and convert that back to postscript. In
such cases the printer can be very slow since it is now dealing
with large volumes of data per page.

	Mike Wescott
	Wescott_Mike at EMC.COM

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