EPICS Home EPICS Controls Argonne National Laboratory

Experimental Physics and
Industrial Control System

Format page
for printing


Search Tech-talk
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  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 
<== Date ==> <== Thread ==>
Subject: Re: Exploring EPICS performance/processing limits
From: Ralph Lange via Tech-talk <tech-talk at aps.anl.gov>
To: EPICS Tech Talk <tech-talk at aps.anl.gov>
Date: Thu, 6 Oct 2022 16:15:46 +0200
Hi Marco,

Please note also that what you're showing is testing a whole chain: python - CA client - network - CA server - IOC database - stream device - asyn - loopback driver.
Lots of parts and lots of failure modes.

If you want to check only the PV processing time (i.e., from the database down), I would add a database on the same IOC that sets the values. Think calc records as counters, seq records for small sequences of things, etc. That would leave out the Channel Access and python client layers and maybe allow locating issues easier.

Cheers,
~Ralph
References:
Exploring EPICS performance/processing limits Marco A. Barra Montevechi Filho via Tech-talk
Navigate by Date:
Prev: EPICS driver / support for "USS" Device: Leybold Turbovac iX William Kirstaedter via Tech-talk
Next: RE: Exploring EPICS performance/processing limits Mark Rivers 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 
Navigate by Thread:
Prev: Re: Exploring EPICS performance/processing limits Marco A. Barra Montevechi Filho via Tech-talk
Next: EPICS Base 3.14.12.8 build error on CentOS 9 Chiang, Liang-Chih [江良志] 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 
ANJ, 06 Oct 2022 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·