A fix for slow network speed...?

Wow good job!
On which channel, with what bitrate, (and is it constant or variable) did you perform your tests?

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PLI has cifs compiled as a module.

Canal digitaal recordings on the commercial channels are almost perfect (pixelerrors are rare). Ned 1, 2 and 3 have peaks at 10-12mbit/s, which is recorded pretty good most of the time. Recording at a sustained 10-12mbit/s gives me hickups and pixelerrors. But recordings are still watchable.

I'm also busy reprogramming the streamts program (used for web-x-tv / vlc). The results are better than my cifs recording, but I still got trouble handling channelchanges. When someone zaps with the remote, the television stays black until I kill streamts with telnet.
Getting good and stable results is not just a matter of using good programmers practices, but also of fiddling with buffersizes and parameters. I guess the dma channels and demuxer on the dm500 are quite busy when recording. Good timing and interleaving between operations (ie. copy data from demux to memory, copy data from memory to networkchip, copy data from demux to videochip) is essential for good performance. This part is, as far as I know, taken care of by the closedsource dream driver. The networkchipdriver is, contrary to populair belief, open source and part of the linux kernel. So people can make adjustments and improvements.

Another observation is that other programs can disturb things. Loading the webinterface (or reloading with ctrl-f5) gives pixelerrors in vlc. So processpriorities are something to improve.

Zitat

I did a 10 minute recording from ORF1 with Gemini 2.4. Bitrate viewer says the videostream is 6.6 Mbit/s .
The result: Not a perfect recording but good enough to watch without getting annoyed. Pixel errors occour every 30 seconds or so, but the errors are minor and there are no actual hickups in picture or sound

I can tell you, that this hickups may come from ORF-Stream. Sometimes, when i'm watching this channel (Humax or Dreambox, it's the same) there are pixel-errors.....

Hello,

its a pitty that there is no progressa nymore.
Or is everyone now sattisfied with the network-performance of the DM500 with Gemini2.9?

I am still anxious for the fixed drivers by DMM.

I mainly write this that this important thread does not get lost (push to the top)

I am sorry thast I also cannot offer any good news for the DM500 owners.

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Hello Firestorm,

no problem, dont be in a hurry.

Ionly dont like that hte other users forget this toppic.

And I am searchin for a DM500 NSLU2 or other NAS solution I dont like to run a PC 24 houers, unfortunately my results with ggrab on NSLU2(unslung5.5) were olso not satisfactory.

hi ive been reading this thread with much intrest, i have a 500c and have experianced some problems with cifs recording, and like most of you i await a reply from dream mulitmedia for a driver fix,

but in the mean time im currently using gemini 2.9 and i have a nas drive connected to it for my recordings and music. im useing this one which i bought a few months ago
http://cgi.ebay.co.uk/3-5-HDD-…ZWD2VQQrdZ1QQcmdZViewItem

i have tried recording many times and i gotta say the recordings are near perfict (although a slight break up for a split second when i start and stop recordings) but overall id say i get about a 98% to 99.9% recording so im a happy chappy
and the best thing is i dont have to have my pc on 24 hours aday for me to use my nas drive and dreambox together

ive tried a few other gemini images with the nas drive and i find 2.9 to be the best one for recordings and playback

cheers

osborne82

Hello osborne82,

thank You for Your comment, als good to know that the DM500 works with this Unit, it is allways the danger to waste money if I have to buy a ne NAS.
Your comment also shows that the same thing works for one User and does not work for anaother using almost the same equipment, I am using DM500s, Gemini 2.9, and NSLU2, and never got a good Recording with CIFS (artefacts and lost words) or NFS(hangers).
Maybe this is only a matter of hardware tolerances.

Do You use long cables and switches or is your NAS next to Your DM500C and connevted with a crossover-cable?

i have the nas drive next to my dreambox and its connected to my router and dreambox connected
with a cross over cable to my router i sometimes use cifs but ive found that i get better recordings if i use samba with the nas drive, but i wouldnt have thought there would be alot of diference between samba and cifs ? although for some reason i cannot mount the nas drive through the onscreen display, i have to use the web interface to mount the samba share, but im happy with the setup now

cheers

osborne82

Hello osborne82,

how You mount samba on Your DM500, I think there is only NFS and CIFS (is a kind of SAMBA anyways).
It is a little bit tricky to find the right Parameters to mount CIFS from the OSD and it will also only outomount after restart, but the mount manager of the web-if has other negative sideeffects (more than one mount at one time).

like i say i use the web interface to set my mount point
when i click on add mount point i get
(0 = NFS, 1 = CIFS, 2 = DEVICE, 3 = SMBFS

i just put 3 enter my ip of my nas and the password of my samba share on my nas drive then mount
like u say i do sometimes get mulitple mount points but i just delet them and im ok

hope this helps

cheers
osborne82