Hi,
Gregoire Favre wrote:
maybe my hardware is not optimal : running a simple bash command :
Which three cards do you have?
card 0: card 1: card 2:
for j in `seq 0 2`;do for i in `seq 1 12`; do szap -a $j -x -n $i ; date ;done;done > TUNING.log
And then grep FE_HAS_LOCK TUNING.log |wc 28 448 2212
Which show I miss some lock ???
If I didn't drop a line while analysing the output, it seems that card 0 locks always, card 1 misses some locks and card 2 misses more locks.
To test whether this is a switch or card issue, would you mind permuting the cables on your cards?
For example: plug the cable on card 0 into card 2 and vice versa and run the test again. If card 2 locks always now, then it looks like a switch issue.
With the original configuration, what happens if you run the inner szap loop in parallel on the three cards?
I got lots of "cx88[1]/2-mpeg: cx8802_timeout" in syslogd.
Hhm, a quick look into cx88-mpeg.c shows that a DMA transfer timed out in this case. Don't know what this means. Maybe a driver developer can tell you more.
BTW: what has changed in your setup recently, as I you didn't report such issues in the past?
Bye.