Many PV connections from CA client

[Tong Zhang via Tech-talk <tech-talk@aps.anl.gov>]

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