[vls-devel] Re: Occasional crazy problem with vls

[Jean-Paul Saman]

Andrew de Quincey wrote:
> On Monday 19 January 2004 14:47, Jean-Paul Saman wrote:
> 
>>Andrew de Quincey wrote:
>>
>>>>But did your clients expirience a still frame or black frame for some
>>>>time when copying the large file ? you haven't answered this question.
>>>
>>>No. On VLC, the first thing I see wrong is the speeded up play. No stills
>>>or black frames.
>>>
>>>On our STBs, which are (unfortunately) far less tolerant to problems, all
>>>kinds of crap happens... jitter, mpeg blocking, black frames...
>>
>>Hmm, sounds like another problem we solved earlier with VLS. It turned
>>out that with *weird* PCR values strange things happen (Weird in the
>>sense of a broken MPEG clock timeline). It should be solved in the CVS,
>>unfortunately I do not know which branch has that fix and which doesn't.
> 
> 
> I'm pretty certain the file's PCR values are fine. It streams perfectly under 
> normal system load situations, and none of the tools I have run it through 
> report any weird PCRs or other problems.

Then I go back to my first analysis of the problem. The copy starves the 
VLS reads.

Does your system have DMA enabled on the HD?

Which kernel are you running?

-- 
Kind greetings,

Jean-Paul Saman


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