Experimental Physics and
Industrial Control System

Motoki Ooi <[email protected]> · Wed, 24 Aug 2005 10:24:42 +0900

Hi Andrei
I'm sorry, I was misunderstanding about caget.
It was not caget nor camonitor method.
What I want to say is "dbGetLink" using in 'aiRecord.c' and other record.
In the following four case, No 1 and No 3 is almost perfect.

But once AiRecord ( or PV gateway) on IOC 2nd is used,

(No 2 and No 4) there is some data loss in archived or camonitored data.

1. CalcRecord(IOC 1st) => LAN => camonitor(IOC 2nd)

2. CalcRecord(IOC 1st) => LAN => aiRecord(IOC 2nd) => camonitor(IOC 2nd)

3. CalcRecord(IOC 1st) => LAN => Channel Archiver(IOC 2nd)

4. CalcRecord(IOC 1st) => LAN => aiRecord(IOC 2nd) => Channel
Archiver(IOC 2nd)

Access method of camonitor and Channel Archiver is differ from AiRecord
or dbGetLink (dbPutLink)?
Motoki Ooi

Liyu, Andrei wrote:
Hi,
	I don't use any (sync or async) caget method. I use monitor
method. So I don't lost data like your case. Also I use caget for simple
(=test) program. For normal program monitor is better.
	I also don't care about CPU loading in my case. I control that
and I know when program uses that. It is tied to trigger and I know how
many mc uses BLM thread after trigger. After that CPU is unloaded and
CAS can take everything.
Andrei.
-----Original Message-----

From: Motoki Ooi [mailto:[email protected]]
Sent: Monday, August 22, 2005 9:08 PM

To: Liyu, Andrei; [email protected]

Subject: Re: CA loss package on 1 Hz rate

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System