[mythtvnz] freeview HD on an AMD X2 6000+

Sun Oct 19 22:35:47 BST 2008

Steve,

I get: 2600000 2400000 2200000 2000000 1800000 1000000

Playing back the recording of Bones from last night: it does work, I 
think. I just watched for 2-3 mins, then got a couple of small skips. 
Its as if it is right on the edge, the smallest change means it losses 
sync. Hence I would like to force AAC, even that tinny difference miht 
help. Plus the 6 channel AC3 sound is very quite when running in two 
channels as I have to, and it is annoying having to turn the speakers up 
near max.

Will try that Bones recording again with the governor set to performance.

Steven Ellis wrote:
>
> On 19/10/2008, at 6:54 PM, Andrew Richards wrote:
>
>> Ah hadn't really thought of that, pretty sure I have only played with SD
>> upscaled stuff so far. However Bones is on tonight so will try with that.
>>
>> My setup is an ASUS M2N-MX SE motherboard with 6100 graphics. CPU is 50+
>> plus while playing TV3, so very much bleeding edge.
>
>
> Andrew - Can you run the following on your CPU so I can try 
> and throttle mine to simulate your setup. We are quite similar as I 
> have 6150 graphics.
>
> cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies 
>
> I get the following on a 6000+
>
> 3100000 3000000 2800000 2600000 2400000 2200000 2000000 1800000 1000000 
>
>
>
>>
>>
>> Steven Ellis wrote:
>>>
>>> On 19/10/2008, at 11:50 AM, Andrew Richards wrote:
>>>
>>>> I am now running this same set-up on my 5200X2, haven't done a through
>>>> test but in simple terms I can play TV3.
>>>>
>>>> Well, at least I can while nothing else is happening. Unfortunately
>>>> playback and commskip cannot co-exists without stuttering.  What I am
>>>> trying to figure out is:
>>>>
>>>> - How to select audio streams? I want to use AAC on TV3 all the time,
>>>> yet cannot see where to change this
>>>> - How to turn off Loopfilter. In Playback Profiles I leave it on CPU+
>>>> and edit the second entry (if rez <=1280 720 & > 720 576 ->XvMC) to use
>>>> 2 CPU's and uncheck the Loopfilter box. I also changed the Primary
>>>> Deinterlacer to One Feild. I assumed all this would lower CPU usage but
>>>> it doesn't.
>>>>
>>>> Also I am confused about the Loopfilter box, my reading of the
>>>> instruction is that with it checked, Loopfilter is enabled. This is the
>>>> default setting, yet by default my machine can play 1080i video which I
>>>> wouldn't expect without skiploopfilter. So it seems to be this setting
>>>> isn't being properly respected. Any thoughts?
>>>
>>> The bitrate and CPU load required for TV3 appears to vary quite a bit
>>> depending on the content. For testing the best bet is to record a show
>>> that is marked as broadcast in HD so you have a reliable reproducible
>>> environment.
>>>
>>> Based on the CPU loading i'm seeing on a 6000+ and similar data for a
>>> 5600+ I'm surprised you get the playback you are seeing. What MB and
>>> GPU do you have?
>>>
>>>>
>>>>
>>>> Steven Ellis wrote:
>>>>>
>>>>> On 14/10/2008, at 10:35 AM, Steven Ellis wrote:
>>>>>
>>>>>>
>>>>>> My X2 6000+ was delivered just an hour or so ago and now have working
>>>>>> TV3 - subject to a couple of minor niggles below.
>>>>>>
>>>>>> I'm running Ubuntu 8.04 with Paul's most recent patched MythTV
>>>>>> release and loopfilter disabled in my playback profile. The
>>>>>> motherboard is an M2NPV-VM with 2G Ram and a Hauppauge HVR-900 USB
>>>>>> tuner.
>>>>>>
>>>>>> Previously I had an X2 3600+ in my test rig which really didn't 
>>>>>> cut it.
>>>>>>
>>>>>> X2 3600+
>>>>>> cat 
>>>>>> /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
>>>>>> 2000000 1800000 1000000
>>>>>>
>>>>>> X2 6000+
>>>>>> cat 
>>>>>> /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
>>>>>> 3100000 3000000 2800000 2600000 2400000 2200000 2000000 1800000
>>>>>> 1000000
>>>>>>
>>>>>> Ok so a lot more speeds to play with but for the purposes of testing
>>>>>> I changed the governor to performance which locks the CPU at its
>>>>>> fastest speed.
>>>>>>
>>>>>> echo "performance" >
>>>>>> /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
>>>>>>
>>>>>> So First a bunch of pre-recorded content
>>>>>>
>>>>>> Channel CPU CPU with Bob
>>>>>> TV3 83% 100+
>>>>>> TV2 50% 50%
>>>>>> TV One 50% 50%
>>>>>>
>>>>>> Live content
>>>>>>
>>>>>> Channel CPU CPU with Bob
>>>>>> TV3 83% 100+
>>>>>> TV One 59% 59%
>>>>>> CTV8 21% 25%
>>>>>> TVNZ 6 21% 24%
>>>>>>
>>>>>> So it appears that the Bob de-interlacer adds quite a bit of
>>>>>> additional load, but thankfully most of that appears to be on the
>>>>>> second core. For TV3 above I get 88% on one core and 29% on the
>>>>>> second core with Bob. Without a de-interlacer almost all the load is
>>>>>> on one cpu.
>>>>>>
>>>>>> There doesn't appear to be much of a performance difference between
>>>>>> playing AC3 or AAC on TV 3 which is good news.
>>>>>>
>>>>>> So the niggles
>>>>>> 1. The X2 6000+ is a 89W CPU part so the core is hotter and the fan
>>>>>> faster than I'd prefer. There are rumours of some lower power parts,
>>>>>> but they might only work in AM2+ compatible boards.
>>>>>>
>>>>>> 2. Occasionally I get a picture in picture effect when I switch
>>>>>> between 720p and 1080i channels which I have two copies of the same
>>>>>> video feed on screen, one of which is in a small box in the top left
>>>>>> hand of the screen.
>>>>>>
>>>>>> 3. The AAC audio doesn't always lock on a channel change
>>>>>>
>>>>>> So I have something that works, but I wouldn't consider it customer
>>>>>> ready.
>>>>>>
>>>>>> I think I need to consider an Intel compatible alternative, but can't
>>>>>> find a board with integrated Composite/Component/SVideo as well as
>>>>>> DVI/HDMI in the Intel space.
>>>>>>
>>>>>
>>>>> Turned CPU scaling back on which is rather interesting
>>>>>
>>>>> For 720p channels it is happy to peg the cpu at 1.8 GHz, for  1080i it
>>>>> goes all the way upto 3.1 GHz.. The SD channels go all the way down to
>>>>> 1GHz which is the lowest speed setting.
>>>>>
>>>>> Going to leave the box playing TV3 for a couple of hours and see how
>>>>> it copes with the load.
>>>>>
>>>>> Steve
>>>>>
>>>>>
>>>>> Steven Ellis - Technical Director
>>>>> OpenMedia Limited
>>>>> email   - steven at openmedia.co.nz <mailto:steven at openmedia.co.nz>
>>>>> website - http://www.openmedia.co.nz <http://www.openmedia.co.nz/>
>>>>>
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>>>>
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>>>
>>> Steven Ellis - Technical Director
>>> OpenMedia Limited
>>> email   - steven at openmedia.co.nz <mailto:steven at openmedia.co.nz>
>>> website - http://www.openmedia.co.nz <http://www.openmedia.co.nz/>
>>>
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>
> Steven Ellis - Technical Director
> OpenMedia Limited
> email   - steven at openmedia.co.nz <mailto:steven at openmedia.co.nz>
> website - http://www.openmedia.co.nz <http://www.openmedia.co.nz/>
>
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