Optimizing Performance for HDTV

Verify you are using the right nVidia drivers:

[root@be mythplugins]# cat /proc/driver/nvidia/version
NVRM version: NVIDIA Linux x86 NVIDIA Kernel Module 1.0-7174 Tue Mar 22 06:44:39 PST 2005
GCC version: gcc version 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)

Verify 8x AGP is enabled:

[root@be mythplugins]# cat /proc/driver/nvidia/agp/status
Status: Enabled
Driver: AGPGART
AGP Rate: 8x
Fast Writes: Disabled
SBA: Enabled

Proper user of openGL sync for retrace (from myth-users@):

Start mythfrontend with the "--verbose playback" option and redirect output to a file. Check for Open GL Sync messages (GLX SGI OPENGL VSYNC or something like that) when a recording or live tv is played back. Possibly could also use glxinfo to check for the GLX SGI OPENGL VSYNC is supported.

Change RTC frequency to 1024 (default = 64):

Add this to /etc/sysctl.conf on FC:

# Enable some RTC stuff for HDTV performance
dev.rtc.max-user-freq = 1024

(or just 'echo 1024 > /proc/sys/dev/rtc/max-user-freq')

View with:
cat /proc/sys/dev/rtc/max-user-freq