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Subject: Re: [EXTERNAL] Re: Monitored PV limit?
From: Aaron Brown via Tech-talk <[email protected]>
To: Ralph Lange <[email protected]>, EPICS Tech Talk <[email protected]>
Date: Fri, 8 Nov 2019 18:22:29 +0000
Hi Ralph,

That was exactly the limit I was experiencing. Changing that limit fixed the problem.

Ultimately I would create a different client to monitor a large number of PVs (I am currently working on creating a large scale data logger), but for now I just wanted to get a better understanding of how the client works and  make sure that the client I set up worked the way I wanted it to.

Thanks for the quick answer!
Aaron Brown
Detector Support Group
Jefferson Lab
From: Ralph Lange <[email protected]>
Sent: Friday, November 8, 2019 11:22 AM
To: EPICS Tech Talk <[email protected]>
Cc: Aaron Brown <[email protected]>
Subject: [EXTERNAL] Re: Monitored PV limit?
 
Hi Aaron,

Assuming you refer to the caMonitor example code that comes with Base: this is an example for how to use the CA client library. In its sources it sets (line 27)
#define MAX_PV 1000  
which is most probably the limit you are experiencing.

For monitoring 5000 values, a command line client does not sound like a reasonable tool. If you can give some more details on your use case, there might be better ways to get it done.

Cheers,
~Ralph



On Fri, 8 Nov 2019 at 17:09, Aaron Brown via Tech-talk <[email protected]> wrote:
Hello All,

I have a list of roughly 5000 PVs that I would like to monitor, but when I run the "./caMonitor" program with the full list it seems to only monitor less than half of the list.
Is there a limit to the number of PVs that can be monitored using the example "./caMonitor" program?

Thanks for any help that can be offered,
Aaron Brown
Detector Support Group
Jefferson Lab
Replies:
Re: [EXTERNAL] Re: Monitored PV limit? Michael Davidsaver via Tech-talk
References:
Monitored PV limit? Aaron Brown via Tech-talk
Re: Monitored PV limit? Ralph Lange via Tech-talk
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