Hi,
I just installed RC18 and am using UltraVNC for the first time (I've been using RealVNC on Windows).
I'm connecting to a non-UltraVNC server (in this case, Mac OS X). It displays okay as long as I don't select the "Auto" connection setting (otherwise I get some garbage at the top of the screen and no screen drawing), but I'm having a major problem with the client.
Regardless of the connection settings I specify, the client seems to be having some major performance problems. If I start doing anything on the remote system that requires ANY screen updates at all, the client gets EXTREMELY slow, CPU utilization goes to 100%, and the application becomes unresponsive until the (painfully slow) screen update is done.
I did some research on the site but haven't found anyone else having similar problems. Is it just me?
I'm running the client on XP SP1 on a 1.6ghz Pentium M.
Update: UltraVNC 1.4.3.6 and UltraVNC SC 1.4.3.6: https://forum.uvnc.com/viewtopic.php?t=37885
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Incredibly high CPU utilization
You mean the mirror driver?
When I tried to run the driver setup utility on the OS X system it just laughed at me...
I'd really like to use UltraVNC tho, it has features much superior to other VNC viewers, but uses REALLY high CPU/much slower updates compared to any others I've used with similar settings.
The problem where CPU would go to 100% and I'd get maybe 1 frame every 5 seconds is gone (I never saw this happen on any other machines so I have to assume it was something about the system I was using, or software conflict that no longer exists, though I haven't really changed anything...), so it's usable again, but still would be MUCH better if it was faster (now maybe 1-2fps on a no-packet-loss, nearly-zero latency 100mbps LAN).
When I tried to run the driver setup utility on the OS X system it just laughed at me...
I'd really like to use UltraVNC tho, it has features much superior to other VNC viewers, but uses REALLY high CPU/much slower updates compared to any others I've used with similar settings.
The problem where CPU would go to 100% and I'd get maybe 1 frame every 5 seconds is gone (I never saw this happen on any other machines so I have to assume it was something about the system I was using, or software conflict that no longer exists, though I haven't really changed anything...), so it's usable again, but still would be MUCH better if it was faster (now maybe 1-2fps on a no-packet-loss, nearly-zero latency 100mbps LAN).
- Rudi De Vos
- Admin & Developer
- Posts: 6862
- Joined: 2004-04-23 10:21
- Contact:
-Server or viewer cpu 100%
-What compression does the viewer support.
-Try to play with the polling settings
In case it is the viewer that have a very high cpu. It is possible caused by the high refresh rate ultravnc is capable off.
There is not a lot you can do, then finding someone who can
benchmark the viewer at function level.
In case the server is 100%, install the driver, this should give about a 10% cpu use.
-What compression does the viewer support.
-Try to play with the polling settings
In case it is the viewer that have a very high cpu. It is possible caused by the high refresh rate ultravnc is capable off.
There is not a lot you can do, then finding someone who can
benchmark the viewer at function level.
In case the server is 100%, install the driver, this should give about a 10% cpu use.
-
- 80
- Posts: 157
- Joined: 2004-08-15 08:33
- Location: WA, USA
Does it happen with lower settings? ie. higher compression.
The mac probably wont take that driver.
"connecting to a non-UltraVNC server (in this case, Mac OS X)"
As in, not an ultravnc program on the server?
Or, just a Mac running ultravnc?
If the first, what is the program?
Does ultravnc's server program run on a Mac?
The mac probably wont take that driver.
"connecting to a non-UltraVNC server (in this case, Mac OS X)"
As in, not an ultravnc program on the server?
Or, just a Mac running ultravnc?
If the first, what is the program?
Does ultravnc's server program run on a Mac?
using latest code.... always... except when im not.
Since the threads in the "bug reports" section all appear to have been deleted for the 1.0 forum, reposting in this similar thread.
Key points:
- Viewer CPU goes to 100% on any screen update activity
- Server is Apple Remote Desktop VNC Server that ships with all Macs
- Problem only happens if connecting with at least high-color settings. Connecting with 256 color causes the viewer to explode (draws garbage at top of new window with correct geometry, then exits after approx. 1 second)
- I'd love it if I could install the UltraVNC driver on the server as per Rudi's suggestion. I assume we would need some Mac developers or to donate some hardware to Rudi before this could happen.
- Other VNC clients (RealVNC, TightVNC, etc) do not appear to experience this problem.
Key points:
- Viewer CPU goes to 100% on any screen update activity
- Server is Apple Remote Desktop VNC Server that ships with all Macs
- Problem only happens if connecting with at least high-color settings. Connecting with 256 color causes the viewer to explode (draws garbage at top of new window with correct geometry, then exits after approx. 1 second)
- I'd love it if I could install the UltraVNC driver on the server as per Rudi's suggestion. I assume we would need some Mac developers or to donate some hardware to Rudi before this could happen.
- Other VNC clients (RealVNC, TightVNC, etc) do not appear to experience this problem.
There is no ultraVNC for Mac OS X but there are compatible freeware products you can use to connect to ultraVNC.
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Wheat Williams
UltraVNC 1.0.1 on Windows XP
OSXvnc 1.6.1 and Chicken of the VNC 2.0b3 on Mac OS X Tiger 10.4.3
Atlanta, Georgia, USA
Ich spreche Deutsch
Aprendo español
UltraVNC 1.0.1 on Windows XP
OSXvnc 1.6.1 and Chicken of the VNC 2.0b3 on Mac OS X Tiger 10.4.3
Atlanta, Georgia, USA
Ich spreche Deutsch
Aprendo español