Dear Guacamole Team,
I am currently experiencing a performance issue with the RDP printer
functionality in Apache Guacamole. When printing PDF documents through
the virtual printer, the generated files are unexpectedly large and slow
to download.
For example, when I send a PDF file for printing that is approximately
*20-30 MB* in size, the resulting print job produces a file around *120
MB*. It then takes roughly *15 minutes* (estimated) to complete the
download of the print job on the client side. This makes the virtual
printing feature quite impractical in my current setup.
After some investigation, I found a previously reported issue that seems
related: https://issues.apache.org/jira/browse/GUACAMOLE-1522.
I would like to understand if there has been any progress or recommended
workaround regarding this behavior.
My current setup is basically this version of guacamole: https://
github.com/boschkundendienst/guacamole-docker-compose (so 1.5.5 on
docker and i'm trying to print a pdf from Windows Host), if you need
more details about my setup (Guacamole version, client/server OS, etc.),
I am happy to provide them.
Thank you for your support, and I appreciate all the work you do on this
great project!
I've seen the Adobe PDF viewer do this in practice. This is
unfortunately just the result of the Windows application producing an
incredibly large PostScript document when instructed to print. If you
open the print queue within Windows while printing is underway and take
a peek at the document size, I suspect you'll see that the document
actually being sent by Windows to the Guacamole printer is enormous -
far larger than the resulting PDF.
If you can enable file transfer for the connection and just transfer the
PDF file instead of attempting to print it, that will avoid requiring
processing of a large PostScript file.
It's also possible that other PDF viewers will behave better, but I have
not personally tested this.
- Mike
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