UltraVNC very slow?

New to UltraVNC? Your questions are welcome in this subforum. :surprise:

UltraVNC very slow?

Postby labtek » 2008-08-19 15:12

Hello,

I got both UltraVNC and pcAnywhere to compare how fast they each were. I wanted my background transmitted so I kept that enabled. For some reason UltraVNC took very long for screen updates. For example, when I clicked on say IE, it took over a minute before it showed up on the screen.

Am I doing something wrong here? Do I have something configured incorrectly?

Thanks,
lab
labtek
 
Posts: 2
Joined: 2008-08-19 14:28

Re: UltraVNC very slow?

Postby alstarr » 2008-08-20 01:32

If you are running Vista, you might be interested in the discussion at
Forum Topic: UltraVNC 104
Subject: Post subject: Remote connections to Vista very slow, 104 RC13
alstarr
 
Posts: 1
Joined: 2008-08-12 00:08
Location: New Jersey

Re: UltraVNC very slow?

Postby Rudi De Vos » 2008-08-20 07:14

Slow Vista:

Driver
Application mode : Driver doesn't work, permission issue.
In application mode you must start it as "runasadmin"

Hook:
Vista has a special hook dll (schook.dll and seperated downloaded)
http://sc.uvnc.com/SChook.dll

I have good results without driver and using the hook,
[v] disable earo (server option) also improve the speed a lot ( on my system the speed is identical to XP when aero disabled)


Settings (see video)
LAN ( video of viewer)
Vista
Mirror driver
winvnc (started application mode, runasadmin)
http://sc.uvnc.com/vistadriver.avi
Vista
No driver
SChook.dll
http://sc.uvnc.com/vista.avi

WAN
repeater: uvnc.com location (US phoenix) (10MB full)
server/viewer: ADSL (400k/3Mb) EU(Brussels)
Shared ADSL, server/viewer via same modem
This full simulate a WAN connection, even slower as data need to travel
up and down.
A)
http://sc.uvnc.com/test1.avi
Driver used
zrle
256 colors
Switch from driver to non driver mode made is slow...
B)
http://sc.uvnc.com/test2.avi
Non driver mode from start

Bins used for testing (VS2008)
http://sc.uvnc.com/bins_17aug.zip
Rudi De Vos
Admin & Developer
Admin & Developer
 
Posts: 4383
Joined: 2004-04-23 10:21

Re: UltraVNC very slow?

Postby labtek » 2008-08-20 12:36

Sorry I am running XP..

Any ideas for XP?
labtek
 
Posts: 2
Joined: 2008-08-19 14:28

Re: UltraVNC very slow?

Postby Rudi De Vos » 2008-08-20 12:41

Same , Vista is slower then XP because it use a lot of animation on his desktop... on XP is should be faster.

schook also work on XP
driver doesn't require "runasadmin"
Rudi De Vos
Admin & Developer
Admin & Developer
 
Posts: 4383
Joined: 2004-04-23 10:21


Return to Beginner questions

Who is online

Users browsing this forum: No registered users and 1 guest