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https://issues.apache.org/jira/browse/GUACAMOLE-668?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Jumper closed GUACAMOLE-668.
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Resolution: Won't Do
> Preferring JPEG due to lower CPU usage - controlling guacd behaviour via some
> kind of preferences
> -------------------------------------------------------------------------------------------------
>
> Key: GUACAMOLE-668
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-668
> Project: Guacamole
> Issue Type: Wish
> Components: guacd
> Reporter: Andrzej Dorobisz
> Priority: Major
>
> In our HPC center, we observe that guacamole-server (guacd) is generating
> quite high CPU-usage even if only one session is currently processed (it
> reaches 100% when moving window back and forth).
> We have tested that using JPEG instead of PNG in
> "{{__guac_common_surface_flush_}}_" (_src/common/surface.c_) noticeably
> decreases the CPU usage. When WebP is available it performs better than PNG
> but still it's slower (in terms of CPU usage) than JPEG.
> We believe that user running _guacd_ should be able to choose which format is
> preferred - without recompilation. Our first idea was to use _guacd.conf_ for
> passing such a preference, but we see that it is not so simple. We have to
> store such a preference somewhere and then pass it to VNC client which is
> calling {{__guac_common_surface_flush}} function.
> -------
> What do you think about adding such an ability and what would be the best
> approach to implement this? If you provide guidance, I can try to implement
> it.
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