[mythtv] Understanding the myth source code

[Yeechang Lee]

Ed W <lists at wildgooses.com> says:
> However, on my previous iteration I was mostly playing with buffer
> sizes and some overly enthusiastic locking in the frontend.

When you're revising your past work, also consider the existing #6719
and #6611 patches; by improving the backend's ability to detect valid
signals they definitely help in speeding up tuning, at least with my
FireWire and HDHomeRun ATSC inputs.

-- 
Frontend/backend:	P4 3.0GHz, 1.5TB software RAID 5 array
Backend:		Quad-core Xeon 1.6GHz, 6.6TB sw RAID 6
Video inputs:		Four high-definition over FireWire/OTA
Accessories:		47" 1080p LCD, 5.1 digital, and MX-600