We have a 10 node QNX 4 network connected via Arcnet. Node 10 has a
very slow response time. I did a SIN the other day and there was a 3-4
second delay in echoing back the SIN command key strokes. I have looked
over everything that I can find SIN and SAC. Looking for what is
causing the delay. SAC shows all time consumed at priority 0.
Node 10 is used to print production pallet tags 400-500 tags every 24
hours. Not a load. Node 10 is also used as a Samba server for the
Windows office computers for production monitoring. This is very slow.
What has changed in the recent past. Node 1 had a hard drive and
ethernet controller fail. Both were replaced. It was about this time
that Node 10’s performance dropped.
Suggestions? Questions?
Anybody got a good idea.
Thanks for reading this and any help you can provide will be greatly
appreciated.
Larry Sams
You could run a simple disk test locally, for example
“dcheck” to see if the hard drive is the problem.
Then you could try copying a file over the network to see if that is
the problem. A network problem
could be caused by a number of things, for example a bad/marginal
cable, or a failing hub port.
Just as suggestion - if the network card on the node 1 was replaced, did you
reflect MAC address change in the netmap files (node 1 and node 10 at least) ?
Could you run ‘netinfo -l’ on the node 1 and post the results here?
Regards,
Igor.
Larry Sams wrote:
We have a 10 node QNX 4 network connected via Arcnet. Node 10 has a
very slow response time. I did a SIN the other day and there was a 3-4
second delay in echoing back the SIN command key strokes. I have looked
over everything that I can find SIN and SAC. Looking for what is
causing the delay. SAC shows all time consumed at priority 0.
Node 10 is used to print production pallet tags 400-500 tags every 24
hours. Not a load. Node 10 is also used as a Samba server for the
Windows office computers for production monitoring. This is very slow.
What has changed in the recent past. Node 1 had a hard drive and
ethernet controller fail. Both were replaced. It was about this time
that Node 10’s performance dropped.
Suggestions? Questions?
Anybody got a good idea.
Thanks for reading this and any help you can provide will be greatly
appreciated.
Larry Sams