* Ronciak, John ([email protected]) wrote:
> Hi Dave,

Hi John,

> Sorry for the delay.  So it ran for about 19 minutes before it stopped
receiving correct?

Probably a bit under that, but yes a few minutes, but that's with the 128 PCI
latency;  with the 32 it would do it in seconds.

> The e100 NIC port that fails is just receiving data
> from the camera correct?

Well it's a PC just sitting there with a browser looking at the
camera

> From that stats something is doing an awful lot
> of transmitting.  An order of magnitude more if I read this correctly.
> What is it transmitting?  Am I understanding of this correct?  if so
> can you please tell me what's going on with all the transmits?

It doesn't seem a lot;  this was extracted by grepping for tx_bytes
in that log; each line is one minute

 rx_bytes bytes/min  bytes/sec
243797360        0      0
243797360        0      0
243799556     2196     36.6
243799736      180      3
243802072     2336     38.9333
243802072        0      0
244921827  1119755  18662.6
251741140  6819313 113655   < A
258691588  6950448 115841
265594929  6903341 115056
276003297 10408368 173473
302321897 26318600 438643   < B
328971818 26649921 444165
355240830 26269012 437817
381531716 26290886 438181
407800668 26268952 437816
434062530 26261862 437698
460339412 26276882 437948
486653710 26314298 438572
507377956 20724246 345404
507377956        0      0
507382596     4640     77.3333

So I suspect at A I started it going, at B probably increased the frame rate;
the camera is doing JPEG images, at about 15 fps max, so 430KB/15 ~ 
30KByte/image
which is reasonable for a 640x480 image.

> Also, have you tried a different e100 NIC?  This problem is very strange so 
> maybe it's a real HW failure?

I was running a plain e100 single NIC I think without trouble (although I'd
have to check what was plugged into it), this is the only dual card I've
got.   Personally I was guessing it was related to the bridge arrangement
which is why I guessed at PCI latency in the 1st place - but that's a
straight guess.

Dave

-- 
 -----Open up your eyes, open up your mind, open up your code -------   
/ Dr. David Alan Gilbert    |       Running GNU/Linux       | Happy  \ 
\ gro.gilbert @ treblig.org |                               | In Hex /
 \ _________________________|_____ http://www.treblig.org   |_______/

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