Experimental Physics and Industrial Control System
|
Subject: |
database breakpoint, dbb(), and large linksets |
From: |
John Dobbins <[email protected]> |
To: |
EPICS Tech-Talk <[email protected]> |
Date: |
Thu, 08 Aug 2013 10:32:06 -0400 |
Greetings,
I am wondering if anyone has experience setting database breakpoints on
large locksets?
I had not used dbb() until recently when someone here tried to use it on
a particular record and it failed. In particular the IOC stopped
communicating via Channel Access, though the console continued to
respond to for example dbl. If I then try the command dbstat the console
stops responding.
Further testing revealed that dbb worked for some records in the IOC but
not for others. In particular large linksets seemed to be a problem. I
tried a second IOC (different device types) and this was true there
also. I can't give a specific linkset size, it seems to work fine for a
few tens of records in a link set. I took a large linkset and trimmed it
until it worked. Adding back one record could reproducibly cause it to
then fail.
Any advice appreciated.
Regards,
John Dobbins
Cornell Laboratory for Accelerator-based Sciences and Education
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