I installed Motion to BBB. And I was streaming video webcamera.
OS is Ubuntu 14.04.
When 320x240 settings of Motion, streaming has been successfully.
However, it failed when the 640x480 settings of Motion.
motion:  Resizing pre_capture buffer to 1 items
motion:  httpd Closing
motion:  httpd thread exit
motion:  Thread 1 - Watchdog timeout, trying to do a graceful restart
motion:  Thread 1 - Watchdog timeout, did NOT restart graceful, killing it!
I have also Beagleboard-xM, and I can stream 640x480 pixels on Beagleboard-xM.
I thought that the cause of the failure depend the ability of the BBB.
However, when tested using the mjpg_streamer, at 640x480 pixels, I was able to streaming.
What is cause of Whatchdog timeout?