Digging into this a bit further, I captured a dmp from a couple of hangs and they both lead to the same symbol file errors, this server is running 64 bit windows 7, so we are in 32 bit compatability mode. It appears that it is unable ot find symbols for ntdll.dll, and wow64cpu.dll

thank you jimk

Microsoft (R) Windows Debugger Version 6.12.0002.633 AMD64 Copyright (c) Microsoft Corporation. All rights reserved.

Loading Dump File [C:\ARC.DMP] User Mini Dump File with Full Memory: Only application data is available

Symbol search path is: *** Invalid ***

• Symbol loading may be unreliable without a symbol search path. *
• Use .symfix to have the debugger choose a symbol path. *
• After setting your symbol path, use .reload to refresh symbol locations. *

Executable search path is: Windows 7 Version 7601 (Service Pack 1) MP (4 procs) Free x64 Product: WinNt, suite: SingleUserTS Machine Name: Debug session time: Sun Apr 8 10:28:22.000 2012 (UTC - 4:00) System Uptime: not available Process Uptime: 0 days 0:08:55.000 .....................................WARNING: rsaenh overlaps cryptsp .WARNING: RpcRtRemote overlaps rsaenh .....................WARNING: wtsapi32 overlaps uxtheme ..WARNING: spsreng overlaps System_Xml_ni ... .WARNING: srloc overlaps EZ_B ...............WARNING: System_Xml_Linq_ni overlaps MMDevAPI .........WARNING: d3d9 overlaps wpfgfx_v0300 . *** ERROR: Symbol file could not be found. Defaulted to export symbols for ntdll.dll - *** ERROR: Symbol file could not be found. Defaulted to export symbols for wow64cpu.dll - wow64cpu!TurboDispatchJumpAddressEnd+0x6c0: 0000000073c72e09 0000 add byte ptr [rax],al ds:fffff8800794a530=??

Try the latest version. Let me know if that helps.

I can reproduce the issue on someone elses computer. I cannot reproduce the issue on any of my computers

HI DJ: Thank you for jumping on this so quickly. Sorry to goof you day. Still hangs, but now the it looks like the color map to the live video is goofed.

The error is somewhat similar in the Dump

Loading Dump File [C:\ARC (4).DMP] User Mini Dump File with Full Memory: Only application data is available

Symbol search path is: *** Invalid ***

• Symbol loading may be unreliable without a symbol search path. *
• Use .symfix to have the debugger choose a symbol path. *
• After setting your symbol path, use .reload to refresh symbol locations. *

Executable search path is: Windows 7 Version 7601 (Service Pack 1) MP (4 procs) Free x64 Product: WinNt, suite: SingleUserTS Machine Name: Debug session time: Sun Apr 8 21:20:57.000 2012 (UTC - 4:00) System Uptime: 0 days 23:29:06.941 Process Uptime: 0 days 0:02:05.000 .....................................WARNING: rsaenh overlaps cryptsp .WARNING: RpcRtRemote overlaps rsaenh ................WARNING: sapi overlaps System_Windows_Forms_ni .....WARNING: wtsapi32 overlaps uxtheme ..WARNING: spsreng overlaps System_Xml_ni ... .WARNING: srloc overlaps EZ_B ......................WARNING: winhttp overlaps mscoree .WARNING: webio overlaps hid WARNING: webio overlaps System_Configuration_ni .WARNING: IPHLPAPI overlaps ntmarta .............. *** ERROR: Symbol file could not be found. Defaulted to export symbols for ntdll.dll - *** ERROR: Symbol file could not be found. Defaulted to export symbols for wow64cpu.dll - wow64cpu!TurboDispatchJumpAddressEnd+0x6c0: 00000000`73c72e09 c3 ret

Sorry, jimk

just uploaded a tif screen capture, not sure if it made it. jimk

Try 2012.04.08.01

That works !!. So tracking by color works great ! But just don't switch tracking types and come back to color, it will hang. But if I pick color first, it ran for several minutes tracking a red object without issue. Went from color to motion back to color and took another dmp when it quit responding. The good news is I am comfortable trying to let it fly the drone and see what happens this eve. But unfortuantely need to leave for work :-(

Thanks again for the great Support !!!! jimk

Symbol search path is: *** Invalid ***

• Symbol loading may be unreliable without a symbol search path. *
• Use .symfix to have the debugger choose a symbol path. *
• After setting your symbol path, use .reload to refresh symbol locations. *

Executable search path is: Windows 7 Version 7601 (Service Pack 1) MP (4 procs) Free x64 Product: WinNt, suite: SingleUserTS Machine Name: Debug session time: Mon Apr 9 08:18:58.000 2012 (UTC - 4:00) System Uptime: 1 days 10:27:08.610 Process Uptime: 0 days 0:03:45.000 .....................................WARNING: rsaenh overlaps cryptsp .WARNING: RpcRtRemote overlaps rsaenh ...........WARNING: dinput8 overlaps System_Drawing_ni ..........WARNING: wtsapi32 overlaps uxtheme ..WARNING: spsreng overlaps System_Configuration_ni ... .WARNING: srloc overlaps GdiPlus ...WARNING: propsys overlaps System_ni ....................WARNING: d3d9 overlaps wpfgfx_v0300 .. *** ERROR: Symbol file could not be found. Defaulted to export symbols for ntdll.dll - *** ERROR: Symbol file could not be found. Defaulted to export symbols for wow64cpu.dll - wow64cpu!TurboDispatchJumpAddressEnd+0x6c0: 00000000`73c72e09 c3 ret

@kleinjd thanks for trying it ... I can't re-produce the issue on my computers. It seems to be processor speed releated. Two threads are locking the image bitmap object. When this happens, C# doesn't hold the process until the lock is released - instead it hangs the entire runtime. It is a bug in C#, from what I can tell - but only a bug when the CPU has limited processing speed available and threads are not physically seperated on the processor, but are virtually seperated by pre-emptive multitasking.

So locking and synchronizing the variable does more harm than good.

It would be a lot easier if I could reproduce the issue. We have quite a few laptops here, but they're all fast I5's and I7's. I'll need to get an AMD-C50 or E350 to test with and reproduce the issue.

What are your PC specs?

HI DJ: So just like you recycling bots, I am using disgarded systems from work. This one is a storage server. Supermicro motherboard with 2x 3.2Ghz XEONs, Intel E7520 (Lindenhurst) Chipset with 4GB RAM, dual socket with HT (4 threads). http://www.supermicro.com/products/motherboard/Xeon800/E7520/X6DH8-XG2.cfm

So given the great troubleshooting you did, I am wondering if I shutdown Hyper threading and/or pin the EZB process to a specific core. If that would do it. So with no HT and pinned to socket 1 (os on socket 0) that should limit it to a single core, single thread and this might do the trick.

In case you are wondering, right now this project is confided to the basement, all my video work is done on this server as it has a nice chunk of fibre channel storage on it to store the video from various projects and gives me remote access :-)

jimk