Hi, I've built a BE/FE machine with 64bit Sempron 3100+ running 32-bit Debian plus nVIDIA FX5200 with accelerated driver (but couldn't get AGP working so running with NvAGP "0"). Storing data to a fast SATA disk (ext3 noatime).
Grabbing full PAL from bttv to nuv takes more than 60% of CPU (I think it's a bit too much but I could live with that eventually). Problem is that replaying such recording takes another 55% of CPU, so LiveTV is impossible (60+55 > 100). Worse yet, the bttv quality is very bad so I need to denoise it a bit. "quickdnr" takes another 20% of CPU. That's scary (55% -> 75%). During the replay mythfrontend eats 35% (55% with quickdnr) and another 20% eats the Xorg process. Why the X running in fullscreen (720x576) consumes that much CPU? Am I missing Xv? It should be running with XvMC.. BTW, it's not broken completely because DVB-S LiveTV takes just 7% CPU (13% of CPU running at half of normal frequency thanks to Cool'n'Quiet). Can someone please tell me if it's normal for MythTV to create that high load. If not, what to fix? If yes, how to work around it? On my old Athlon 2200+ I am able to grab D1/2 PAL, crop, denoise, deinterlace and encode into MPEG4 in realtime with just 50% of CPU (mencoder). That's why I am surprised that 3100+ is so overloaded. Thanks. Petr
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