Experimental Physics and
Industrial Control System

Hi Mark,

Thank you!

I am posting an array of floats.  I tried to monitor a simpler case, a single float,
still got the same behavior.  Somehow I enter the wrong 'if' block in
db_post_single_event every the other time.

Best regards,
Dehong




----- Original Message -----
From: Mark Rivers <[email protected]>
Date: Saturday, August 9, 2008 4:11 pm
Subject: RE: RE: Loosing half the monitor callbacks
To: Dehong Zhang <[email protected]>
Cc: [email protected]


> 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
> >
> >
> >
> 
> 

References:

Loosing half the monitor callbacks Dehong Zhang

RE: Loosing half the monitor callbacks Mark Rivers

RE: RE: Loosing half the monitor callbacks Mark Rivers

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