[mythtv-users] Performance problem

Jonas Björklund jb at soe.se
Sun May 14 08:39:35 EDT 2006


Hello,

I have a RS482-IL motherbord and a AMD Turion MT-34.
The motherbord has a ATI Radeon Xpress 200 built in.
I have Hauppauge bt848. Samsung Spinpoint 250GB harddisk.

I have only tried live TV and get performance problem. Every 2 seconds I 
get a lag on the picture. :-(

Is my system to slow? CPU? Capture card? Harddisk?

myth ~ # uname -a
Linux myth 2.6.15-gentoo-r7 #7 Sat Apr 29 15:50:15 CEST 2006 x86_64 AMD 
Turion(tm) 64 Mobile Technology MT-34 GNU/Linux

myth ~ # bonnie
File './Bonnie.6746', size: 104857600
Writing with putc()...done
Rewriting...done
Writing intelligently...done
Reading with getc()...done
Reading intelligently...done
Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done...
               -------Sequential Output-------- ---Sequential Input-- --Random--
               -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine    MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU  /sec %CPU
           100 18334 95.4 123035 76.9 134444 52.5 29832 98.8 893511 97.7 38031.1 91.3

myth ~ # dmesg |grep bttv
bttv: driver version 0.9.16 loaded
bttv: using 8 buffers with 2080k (520 pages) each for capture
bttv: Bt8xx card found (0).
bttv0: Bt848 (rev 17) at 0000:02:00.0, irq: 201, latency: 64, mmio: 
0xdfeff000
bttv0: using:  *** UNKNOWN/GENERIC ***  [card=0,autodetected]
bttv0: gpio: en=00000000, out=00000000 in=00fffffb [init]
bttv0: detected by eeprom: Hauppauge (bt848) [card=2]
bttv0: using tuner=0
bttv0: i2c: checking for MSP34xx @ 0x80... not found
bttv0: i2c: checking for TDA9875 @ 0xb0... not found
bttv0: i2c: checking for TDA7432 @ 0x8a... not found
bttv0: i2c: checking for TDA9887 @ 0x86... not found
bttv0: registered device video0
bttv0: registered device vbi0



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