Experimental Physics and
Industrial Control System

Jeff Hill <[email protected]> · Tue, 23 Sep 1997 13:27:56 -0600

Hi,

Janet indicates that this is not a CA disconnect problem based
on the alarm handler display. Nevertheless, I should mention that there
is a paramter that adjust the delay required before the CA client library
decides that an unresponsive connection is disconnected.

> Seems like the alarm handler is a bit too impatient about deciding if
> it has a connection to the channel. Does that sound right?  Is there a
> way to configure the alarm handler to avoid this?
> 

If the IOC is so busy that the CA server is starved for CPU for 
EPICS_CA_CONN_TMO (default is 30 sec)  then the client will
disconnect.

When increasing this parameter, you must of course conclude that 
your client can tollarate situations where IOCs are so heavily loaded 
that your client looses contact for more than 30 sec.

Jeff

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System