EPICS Controls Argonne National Laboratory

Experimental Physics and
Industrial Control System

2002  2003  2004  <20052006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024  Index 2002  2003  2004  <20052006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
<== Date ==> <== Thread ==>

Subject: Re: multiple error messages
From: Benjamin Franksen <[email protected]>
To: [email protected]
Date: Fri, 18 Nov 2005 12:15:13 +0100
On Thursday 17 November 2005 23:06, Andrew Johnson wrote:
> Benjamin Franksen wrote:
> > please re-read my message. I explicitly said I did this to provoke
> > an error message on the IOC console. I merely wondered if this is
> > such a severe error that the IOC must report this five times, when
> > (IMHO) once would have been enough ;-)
>
> My apologies for not completely reading your message, however the IOC
> is merely reporting the error every time it occurs, i.e. once every
> time the CA client retries the name search.  Your client gives up
> searching after trying for 1 second, during which time there are 5
> searches.  If I ask caget to wait 10 seconds, I get rather more
> messages.

Ah, this makes it perfectly clear. I didn't know that caput tries to 
connect to a PV multiple times. Thanks for the explanation.

> Throttling the duplicates not a trivial problem however; it would be
> simple to remove the message completely (see src/db/db_access.c), but
> I can see it being occasionally useful to track down errant clients.

I have no problem with the current behavior. Just didn't know where it 
came from and thought there might be something wrong, which obviously 
isn't the case.

Ben

References:
RE: dbEvent.c line 665 Jeff Hill
Re: multiple error messages Benjamin Franksen
Re: multiple error messages Andrew Johnson

Navigate by Date:
Prev: Re: posix thread priorities Ralph Lange
Next: Re: R3.14.8 Status/logClient patch Benjamin Franksen
Index: 2002  2003  2004  <20052006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
Navigate by Thread:
Prev: Re: multiple error messages Andrew Johnson
Next: Re: [Fwd: R3.14.8 testing: epicsMessageQueueTestHost fails on linux-x86] Marty Kraimer
Index: 2002  2003  2004  <20052006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
ANJ, 02 Feb 2012 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·