Harondel J. Sibble wrote:
> 
> On 21 Mar 2008 at 11:29, Roger Heflin wrote:
> 
>> My backend machine has only 1GB of ram and that appears to be somewhat
>> tight for just backend services (no gui up), so I would expect 512 MB
>> to be very troublesome to run backend, mysql and vlc at the same time. 
> 
> Really, I find that quite surprising, my backend is an Althon XP1800+ 
> (1.5ghz) with 512mb ram, same machine I've had for the past 3 or 4 years with 
> minor changes. It's a combined front/backend machine with 3x pvr-150's. Even 
> currently streaming to an MVP and recording a show, i'm still able to use 
> mythstreamtv (vlc live transcoding) to stream recorded programs to my 
> pda/laptop either locally or remotely over vpn without a problem.
> 
> Mind you I had to implement the ide pci latency stuff otherwise the machine 
> would lockup hard under the load. Now it has no qualms about recording 2 
> shows concurrently while playing back a 3rd (or doing live tv).


Mine gets some interesting response issues with the MVP when trying to stop 
recordings (it takes along time and times out), it did not have that issue when 
I had it on a 3.2Ghz P4 with 3GB of ram, so I am guessing that is probably the 
ram issue, and the fact that I have 600+ recordings.

And I don't have VLC issues with the lower resolutions or lower quality 
transcoding, only the HD stuff, I don't have issues serving out non-transcoded 
data.    How low of bitrate does mythstreamtv do and if you are only doing it 
with SD (720x480) I would expect that to work fine, the CPU required to do 
1920x1080 and 1280x720 is alot higher because of both the increased resolution, 
and the increased bitrates, and at that high of cpu usage, any interruption 
causes stops and starts, while with SD videos quite a lot of interruptions 
(paging) can be tolerated and still have the transcoding process be able catch 
up and not have stops and starts at the client end.

                               Roger


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