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<== Date ==> <== Thread ==>

Subject: Problems with the alarm-server and large number of channels
From: Charles Jenkins via Tech-talk <tech-talk at aps.anl.gov>
To: Phoebus Tech Talk <tech-talk at aps.anl.gov>
Date: Thu, 26 Jun 2025 09:01:45 -0500
Hello Everyone,

I am working on setting up the Phoebus alarm-server for the Mu2e experiment.

I have a simulated EPICS IOC that I use to develop a Phoebus alarm-server (this includes setting up zookeeper and kafka).  I have been able to successfully set up the alarm server for one large sub-system, but when I add a second large sub-system I get "UNDEFINED/Disconnected" messages for process variables on the alarm tree and "UNDEFINED" for these process variables in the alarm table.  If I include just one of these large subsystems I do not get these messages.  Messages from the alarm-server itself says "connection timed out" for the channels.  If I type "ls" in the alarm-server terminal, these alarm topics say "UNDEFINED" . Meanwhile a "caget"of channels from EPICS (the simulated IOC) gives values that I had set previously before starting the alarm-server and Phoebus.

Can anyone provide a clue as to what I am not setting up correctly?

Thanks,
Merrill Jenkins

--
+++++++++++++++++++++++++
Merrill Jenkins
Professor of Physics
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Replies:
Re: [EXTERNAL] Problems with the alarm-server and large number of channels Hartman, Steven via Tech-talk

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