[mythtv-users] Live TV Pauses

[Kevin Stussman]

On Wed, 2004-06-30 at 11:10, Stephen Tait wrote:
> On hardware like that, load average and CPU usage is waaaaaaaaay too high. 
> I'm on a 2400 with an nVidia FX MX4000, load average is never above about 
> 0.3 and CPU usage is at about 1% when watching paused live TV, and hits 
> about 20% with deinterlacing.
> 
> Number one culprit I'd say is DMA on the hard drive. Delve into hdparm and 
> check that DMA is i) enabled and b) working.

Yeah....I thought about that. I know hdparm well and it seems to be
tweaked ok (maybe not perfect but the important settings seem to be on).

A friend of mine suggested that it may be doing some sort of software
coding/decoding and not using proper hardware resources... Is there a
way to ensure all is well? (I see all in lspci and modprobe).

K.


--------------
hdparm -X66 -d1 -u1 -m16 -c3 /dev/hda

mythtv root # hdparm -v /dev/hda

/dev/hda:
 multcount    = 16 (on)
 IO_support   =  1 (32-bit)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 19929/255/63, sectors = 320173056, start = 0

mythtv root # hdparm -i /dev/hda

/dev/hda:

 Model=Maxtor 6Y160P0, FwRev=YAR41BW0, SerialNo=Y443DFKE
 Config={ Fixed }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
 BuffType=DualPortCache, BuffSize=7936kB, MaxMultSect=16, MultSect=16
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio1 pio2 pio3 pio4
 DMA modes:  mdma0 mdma1 mdma2
 UDMA modes: udma0 udma1 udma2
 AdvancedPM=yes: disabled (255) WriteCache=enabled
 Drive conforms to: (null):

 * signifies the current active mode