On 26/02/10 01:12, DRC wrote: >>> I will say that TigerVNC is not tuned for connections that slow. Tuning >>> the protocol to be exceptionally "tight" on very low bandwidth >>> connections makes it perform miserably slow on faster connections. >>> However, I think there is still probably room for improvement. >> >> I think this is bigger than just a case of sub-optimal tuning. I'll >> resume my findings from earlier: >> >> ssh -C 265 colours = a bit slow but workable >> ssh -C 24 bit colour = functional but annoyingly slow >> ssh any color depth = absolutely unusably slow , even for debugging >> purposes >> >> Within a factor of 2 all compression options, including raw, are about >> equal on ssh -C >> >> Apparently, ssh is managing to very significantly compress something >> that tiger is missing. >> >> One anomaly that may be significant is the image size. >> Size: 1366 x 1366 >> >> If I go fullscreen I get the full image height within my 1024 x 768 >> client screen but with a large black area below that I can scroll to. So >> for some reason the server is transmitting a large square rather than >> the true desktop image. >> >> Can you suggest any reason for that ? > > Maybe SSh is coalescing data when you enable compression, which may have > a similar effect to increasing the deferred update timer. >
Thanks, >> One anomaly that may be significant is the image size. >> Size: 1366 x 1366 Can you comment on the large black area out side the remote desktop size. It must be a bug its being there at all and this is almost doubling the size of the image being sent. From my results , I suspect that this blank area is maybe NOT being compressed by tigervnc which could be just compressing the true desktop. This would at least seem to be a significant bug. regards. ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Tigervnc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/tigervnc-users
