I did not know that single stream was maintained. How do new clients
join the session? Is dictionary replicated when new client joins the
session?
Text compresses well because it is just black on white. Multicolored
backgrounds do not but if you running vnc you should turn all of these off.
Personally I make simple color scheme and connect with 256 color mode.
Makes for very good performance. Almost like local screen. Obviously you
cant look at pictures but who would do it over vnc?
VNC mirror driver does not affect any display functionality. It works at
the same level as video card driver. To system it looks just like
another video card.
Regards,
Alex
I was referring to the dictionary maintained by the LZMA codec, if VNC
were to use LZMA compression. I noticed that in the ZRLE encoding, a
single zlib stream is maintained for the whole session. I presume the
same thing could be done with LZMA; in that case, the LZMA codec would
maintain a dictionary for the duration of the session.
Also things vnc compresses are mostly flat color surfaces which
compress well with most any method.
What about rendered text and multi-colored desktop backgrounds such as
the ever-popular "Bliss" background under Windows XP?
I found most slowness during vnc session on windows comes not from the
bandwidth but from screen polling. This problem is eliminated with EE
or PE of the vnc with mirror driver.
What display functionality, if any, does the system disable while the
VNC mirror driver is active?
Matt
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