[mythtv-users] mythTV, Kaffeine and Twinhan DVB-T

[Nicklas Bergfeldt]

Nick Crabtree wrote:
> ... note that the only time I get less than 99% in the right hand 
> column is in the Gaming section. Your 83% Video in the presence of X 
> could well be related to your MythTV problem.
>
> Which I/O scheduler are you using (I'm using CFQ).
I was using "anticipatory", switching to "cfq" resulted in the following 
results (not very different :-/ )...
 - What system are you using (CPU, etc)?

How high would I need to go in terms of CPU in order to satisfy mythTV then?


Sky /usr/src/interbench/interbench-0.30 > cat /sys/block/hda/queue/scheduler
noop anticipatory deadline [cfq]
Sky /usr/src/interbench/interbench-0.30 > ./interbench
514666 loops_per_ms read from file interbench.loops_per_ms

Using 514666 loops per ms, running every load for 30 seconds
Benchmarking kernel 2.6.15-gentoo-r1 at datestamp 200603151728

--- Benchmarking simulated cpu of Audio in the presence of simulated ---
Load    Latency +/- SD (ms)  Max Latency   % Desired CPU  % Deadlines Met
None      0.006 +/- 0.00723    0.025             100            100
Video     0.156 +/- 0.266      0.518             100            100
X          1.43 +/- 3.21        12.1             100            100
Burn      0.006 +/- 0.00812    0.043             100            100
Write     0.028 +/- 0.0941      1.24             100            100
Read      0.024 +/- 0.0268     0.288             100            100
Compile   0.024 +/- 0.0475     0.623             100            100
Memload   0.067 +/- 0.425       8.01             100            100

--- Benchmarking simulated cpu of Video in the presence of simulated ---
Load    Latency +/- SD (ms)  Max Latency   % Desired CPU  % Deadlines Met
None      0.008 +/- 0.0157     0.273             100            100
X           4.5 +/- 9.84        33.3            99.3           81.7
Burn      0.006 +/- 0.0125     0.084             100            100
Write      0.02 +/- 0.038      0.501             100            100
Read      0.026 +/- 0.0317     0.118             100            100
Compile   0.056 +/- 0.873       28.3            99.9           99.9
Memload   0.135 +/- 1.37        28.7            99.9           99.7

--- Benchmarking simulated cpu of X in the presence of simulated ---
Load    Latency +/- SD (ms)  Max Latency   % Desired CPU  % Deadlines Met
None      0.013 +/- 0.231          4            98.7           98.7
Video     0.001 +/- 0.0278     0.482             100            100
Burn          0 +/- 0.000846   0.012             100            100
Write     0.125 +/- 0.852          8            95.3           93.9
Read      0.026 +/- 0.462          8            97.4           97.4
Compile   0.302 +/- 1.54          10            93.8           90.9
Memload   0.112 +/- 0.908         12            98.1           96.7

--- Benchmarking simulated cpu of Gaming in the presence of simulated ---
Load    Latency +/- SD (ms)  Max Latency   % Desired CPU
None      0.002 +/- 0.0335     0.616             100
Video         0 +/- 0              0             100
X          12.9 +/- 29.7         108            88.6
Burn        193 +/- 267          367            34.1
Write      14.2 +/- 31.8         263            87.5
Read       6.32 +/- 6.77        11.3            94.1
Compile     310 +/- 376          909            24.4
Memload    12.9 +/- 31.8         166            88.5


Sky /usr/src/interbench/interbench-0.30 >