EPICS Controls Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024  2025  <2026 Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024  2025  <2026
<== Date ==> <== Thread ==>

Subject: Re: What is serving these PVs?
From: Ralph Lange via Tech-talk <tech-talk at aps.anl.gov>
To: EPICS Tech Talk <tech-talk at aps.anl.gov>
Date: Wed, 27 May 2026 20:36:10 +0200
On Wed, 27 May 2026 at 19:54, David Bracey via Tech-talk <tech-talk at aps.anl.gov> wrote:

I have all of the servers disabled on this IOC:

 

epics> dbsr

No server layers registered with IOC

epics> dbl

ABC:XYZ_CTRL_SYS:AMP

ABC:XYZ_CTRL_SYS:FREQ

ABC:XYZ_CTRL_SYS:TIME

ABC:XYZ_CTRL_SYS:COS

ABC:XYZ_CTRL_SYS:SIN

 

However the PVs are still being served:

 

dbracey@xyzzy:~$ pvxget ABC:XYZ_CTRL_SYS:AMP

ABC:XYZ_CTRL_SYS:AMP

    value double = 10

    alarm.severity int32_t = 0

 

epics> epicsPrtEnvParams

EPICS_IOC_IGNORE_SERVERS: rsrv qsrv2

 

I am just guessing at how things work, so I must have made a wrong assumption. 

Can someone explain what’s going on?


What does `pvinfo ...` show?
Maybe another instance of the IOC running...

Cheers,
~Ralph


Replies:
Re: What is serving these PVs? David Bracey via Tech-talk
References:
What is serving these PVs? David Bracey via Tech-talk

Navigate by Date:
Prev: What is serving these PVs? David Bracey via Tech-talk
Next: Re: What is serving these PVs? David Bracey via Tech-talk
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024  2025  <2026
Navigate by Thread:
Prev: What is serving these PVs? David Bracey via Tech-talk
Next: Re: What is serving these PVs? David Bracey via Tech-talk
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024  2025  <2026
ANJ, 27 May 2026 · Home · News · About · Talk · Base · Modules · Extensions ·
· Distributions · Download · Documents · Links · Licensing ·