[Approved] Fix for stuttering/corrupted streaming of live tv (3 Viewers)

[RobNorthcott]

I tried the patch on my 1.1.2 single-seat setup, hoping it would reduce the disc access and a bit of HD stuttering. Doesn't seem to have made any difference at all - drive access still seems just as high as before. I stopped the TV service, overwrote the files and restarted. All still working though, so it hasn't broken anything.

I'm not moaning - I realise this wasn't what the patch was really intended for. But now I've got it installed, is there anything I could do to help your testing? Logs when playing back recordings?

Rob

 

[miroslav22]

Hi Rob,

Sorry it doesn't seem to have helped - you should be seeing a big reduction in disk IOs/seeks though (by approx 90% reads & 98% writes). Crucially this is IOs though and not total bytes read/written.

On a HD channel with the patch you should see around 100 write operations per second and 100-150 reads per second (down from ~12,000 and ~1,200 respectively. You can check this in perfmon or by adding the Read/Write IO monitors to task manager.

Edit: Regarding testing I think there's only a few problems to iron out when timeshifting on a UNC path. If you have RTSP clients some additional testing on these would be much appreciated (channel change time, reliability etc)

 

[Ponyriemen]

AW: Re: AW: Fix for stuttering/corrupted streaming of live tv

The 1.2.0 Alpha database should have the "stopgraph" column available, but it doesn't seem to exist on your install (bad/failed upgrade possibly?). I'm afraid I can only suggest doing a fresh installation of the official 1.2.0 Alpha and try again.. :sorry:

...i am using 4TheRecord, but not its Tuner called "Argus", does that Info help you finding the Solution for me?
Or do i have to do really a full clean Install on Server? That is the worst case for me...

 

[jameson_uk]

Re: AW: Re: AW: Fix for stuttering/corrupted streaming of live tv

...i am using 4TheRecord, but not its Tuner called "Argus", does that Info help you finding the Solution for me?
Or do i have to do really a full clean Install on Server? That is the worst case for me...

There appears to have been a problem with your install so your TV server is probably not running 1.2. You do not need to do a full install but you do need to re-run the TV installer (this will keep your settings but once upgraded to 1.2 it will stop you reverting to 1.1 without a complete install)

 

[Ponyriemen]

AW: Fix for stuttering/corrupted streaming of live tv

ok, i will try that when i am at Home again. Thanks so far...

 

[RobNorthcott]

Hi Rob,

Sorry it doesn't seem to have helped - you should be seeing a big reduction in disk IOs/seeks though (by approx 90% reads & 98% writes). Crucially this is IOs though and not total bytes read/written.

On a HD channel with the patch you should see around 100 write operations per second and 100-150 reads per second (down from ~12,000 and ~1,200 respectively. You can check this in perfmon or by adding the Read/Write IO monitors to task manager.

Edit: Regarding testing I think there's only a few problems to iron out when timeshifting on a UNC path. If you have RTSP clients some additional testing on these would be much appreciated (channel change time, reliability etc)

No worries - I'm only going by the drive light on the case, so not very scientific! It still seems to be pretty much solidly on a lot of the time while playing HD, whereas if I play the same file in another app it just flickers. I'll have a better look at it later. My system is stand-alone single-seat, so I can't help with client testing I'm afraid.

Rob

 

[technick]

Hi, just for information, tested on a 1.1.2 binaries on a singleseat (to save my hardrive life ;-)

Seem to work fine exept the tv guide, as soon I press button, MP ask the IP of the TV server (without stop live TV).

 

[RobNorthcott]

Hi, just for information, tested on a 1.1.2 binaries on a singleseat (to save my hardrive life ;-)

Seem to work fine exept the tv guide, as soon I press button, MP ask the IP of the TV server (without stop live TV).

So has your drive access gone down noticably? I'm starting to wonder if I did something wrong...

Rob

 

[technick]

You probably right, something goes wrong...

Without Patch
View attachment 75550

With Pach
View attachment 75549

It change nothing for me. For your information, the V3 on a patched SVN compiled myself goes faster but nothing else TV work on MP... so I return on 1.1.2. Perhaps just a problem on this test version ?


Edit : perhaps also that MB/S should be equal and that IO/S should be lower ? I don't know how to see IO/S.

 

[Ponyriemen]

AW: Re: AW: Fix for stuttering/corrupted streaming of live tv

Sorry to ask again but you're definitely using the files meant for 1.2.0 Alpha?

Back Home - Oh My God, how embarrassing...

Before a few Days i restored an HDD-Image on WHS, dont pinned, that i restored an older Version of TVServer, it was 1.1.1...
Now i updated to 1.2.0 on Server, changed the Files - it workes. Now the Time will show if it is better now...

Thanks!