Hi all, I'm running VNC server 4.1.2 on a win2k server and have found that screen updates start to happen very slowly after having the server up for around 2 weeks. I'm making fairly heavy use of VNC (I'm connected to the server for at least 4hrs per day). Any suggestions on how I can troubleshoot this? Some observations so far....
- Its not a gradual performance degradation - the server goes straight from working fine to taking around 5-20s to update the screen - it's like something breaks. - This has happened 3 times so far and the system seems to fail after (roughly) the same period of time. - The delay only seems to occur on certain events...moving the mouse, dragging windows, updating of counters/graphs within windows seems OK. Changing the window focus (e.g. alt-tab) is a problem. - Some of the time, the window gets partially drawn (usually the border and toolbars), then it freezes and the rest gets drawn (equally quickly) after the freeze. - Not everything gets delayed - if I have Windows Task Manager set to 'always on top' with the performance graphs showing & I change the window focus from one application to another, I see the borders of the new application get drawn, the window then sits there for around 10s and the rest of the detail then gets filled in. Meanwhile, the task manager graphs have continued to scroll/update throughout. - The system remains 99% idle throughout the freeze. I don't see the CPU utilization go up and the winvnc4.exe process doesn't appear to grab any more cycles. - Pings from the client to the server remain at 1-2ms throughout the freeze. - The slow response remains regardless of which client machine or VNC client I connect from (i've tried realvnc and tightvnc clients on windows and linux hosts). - Restarting the VNC server process on the server doesn't help. - Raising the priority of the VNC server process doesn't help. - So far, rebooting the Win2k server is the only way I've been able to fix the problem. Cheers, Steve. _______________________________________________ VNC-List mailing list VNC-List@realvnc.com To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list
