Stefan Huelswitt kirjoitti: > On 01 Feb 2007 Reinhard Nissl <rnissl@xxxxxx> wrote: > > >> Heikki Manninen wrote: >> >> >>>> I've noticed that earlier when I was using PIII 550 MHz and vdr 1.3.22 >>>> (or something about) I made a test by recording nine channels >>>> simultaneously and watching a recording at the same time. I remember >>>> there seemed to be no trouble doing it. Now when I have vdr 1.4.4 after >>>> fourth recording starts vdr becomes sluggish and there starts to come >>>> errors on log: >>>> dvb-ttpci: warning: timeout waiting in LoadBitmap >>>> when pushing menu button. And ofcourse no menu appears or menu appears >>>> only partly. >>>> >>> Exactly the same thing here and with the latest and the second latest >>> firmware. My FF 2.1 TT card starts to die after third simultaneous >>> recording. But then again, I think that budget cards are much better in >>> this area. >>> >> Most likely, it's me who has to be blamed. Around 1.3.27, cVideoRepacker >> was introduced which has an impact on CPU load. This could be a reason >> why the menu is slow when running several recordings at the same time. >> > > I don't think that the problem is related to anything on VDR > side. > > AFAIK the bandwidth from ARM to PCI bus is very limited on > full-featured cards. With 3 recordings being transfered to VDR > there is simply not enough bandwidth left for the OSD transfers. > Hence the LoadBitmap timeout. > > I experience the problem since VDR introduced concurrent > recordings and I cannot believe that there is any VDR / firmware > combination which doesn't show this behaviour as it's IMO a > hardware limitation. > > Budget cards doesn't have this limitation, they can transfer the > full transponder without problems. > I know the performance was better when I was using vdr-1.3.22. I know I had 9 recordings going on and still I was able to watch a previous recording and I was using a slower cpu and a ff card. Ofcourse my recent test does prove your point, hence the question "what is the best combination of hw and sw?". \\Kartsa
