Experimental Physics and
Industrial Control System

-----Original Message-----
From: Liyu, Andrei [mailto:[email protected]]
Sent: Monday, September 27, 2004 12:09 PM
To: [email protected]
Subject: IOC and channels

 

Hi,

          I wrote simple cliet that open 10000 channels to the same PV. I remark that I just opened and didn’t do any get/read/subscribe. Then program closes channels and destroys CA. What I saw:

 

- of course, IOC had one more connections (I used VxStat)

- of course, IOC had 10000 more channels

- of course, IOC lost some memory. (VxStat shows that the biggest memory pool became less)

- IOC CPU loading became 33% (It was ~13-15%).

 

Last item I couldn’t understand. What IOC (definitely, server layer of IOC) does?

 

Another problem. I started this program 3 times. After that IOC crashed. Did anybody similar tests?

 

Thanks, Andrei.