Experimental Physics and
Industrial Control System

"Mark Rivers" <[email protected]> · Sat, 9 Aug 2008 16:10:21 -0500

When you say "raise a monitoring with the last 144 data points" what do you mean?  
Are you averaging these points, or are you posting an array, or something else?

Mark

________________________________

From: Dehong Zhang [mailto:[email protected]]
Sent: Fri 8/8/2008 5:05 PM
To: Mark Rivers
Subject: Re: RE: Loosing half the monitor callbacks

Hi Mark,

Thank you!  My ioc is indeed changing very fast -- triggered by some hardware at 720 Hz, then
every the 144th time I call the db_post_event method to raise a monitoring with the last 144 data
points.  Somehow i just miss every the other monitoring.  I tried to slow down the clock by 8 times,
it (camonitor) is still doing the same thing.

Best regards,
Dehong

----- Original Message -----
From: Mark Rivers <[email protected]>
Date: Friday, August 8, 2008 4:32 pm
Subject: RE: Loosing half the monitor callbacks
To: Dehong Zhang <[email protected]>, [email protected]

> What happens when you run the "camonitor" utility from EPICS base at
> the command line on that PV?  Perhaps the PV is really not changing
> like you think it should be.
> 
> Mark
> 
>
> ________________________________
>
> From: [email protected] on behalf of Dehong Zhang
> Sent: Fri 8/8/2008 4:18 PM
> To: [email protected]
> Subject: Loosing half the monitor callbacks
>
>
>
> Hi,
>
> I would like to monitor a PV at 5 Hz.  Somehow I do get 5 callbacks
> every seconds
> but only get the changes every the other time, like getting changes
> 1st, 3rd, 5th ...
> two times, but never get changes 2nd, 4th, ...
>
> Could you please enlighten me?
>
> Thanks and best regards,
> Dehong
>
>
>

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System