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Subject: Many PV connections from CA client
From: Tong Zhang via Tech-talk <tech-talk@aps.anl.gov>
To: "'tech-talk@aps.anl.gov'" <tech-talk@aps.anl.gov>
Date: Thu, 21 Mar 2019 10:48:37 -0400
Hello,

As you can see from the attached screenshot, the warning messages from ca module of pyepics happened when I was doing tasks described as below:

1. I created many epics.PV objects (few hundreds to a thousand);
2. Capture all the readings from these created PV objects in a for loop.

It looks like I can use caget_many(<PV list>) to achieve the goals, but the whole logic needs to be well refactored, so what if I want do this in the for-loop way, how can I avoid this UserWarnings, anyone can help me understand this issue?

Thank you,
Tong

Attachment: Screenshot from 2019-03-21 10-07-45.png
Description: PNG image


Replies:
Re: Many PV connections from CA client Matt Newville via Tech-talk

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