Re: CA loss package on 1 Hz rate

[Motoki Ooi <ooi@cens.tokai.jaeri.go.jp>]

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:ooi@cens.tokai.jaeri.go.jp] 
> Sent: Monday, August 22, 2005 9:08 PM
> To: Liyu, Andrei; tech-talk@aps.anl.gov
> Subject: Re: CA loss package on 1 Hz rate
>
>  
>
>