Experimental Physics and Industrial Control System
|
Hi,
On Dec 9, 2020, at 3:14 PM, Manoussakis, Adamandios via Tech-talk < tech-talk at aps.anl.gov> wrote:
I have been looking at older posts and have seen talk of increasing the scan rate from the default (I think) .1seconds but no definitive guide on how to? On a standard linux distro without RT_PREEMPT, is it possible
to push to say .01 or faster scan rates? Also I wanted to know does camonitor only update as fast as the scan rate limit, .1seconds currently?
There is no internal connection between CA monitor rates and the DB scan rates, it very much depends on your CPU, your IOC application and the clients you have connected as to how fast you would be able to run a periodic scan thread that sends out monitors.
Note that the IOC’s CA server can and does throw away monitor updates if the clients can’t keep up, so don’t design your systems assuming that your clients will always get every monitor if you’re running at high speeds.
HTH,
- Andrew
--
Complexity comes for free, simplicity you have to work for.
|
- Replies:
- RE: Faster Scan Rates possible? Manoussakis, Adamandios via Tech-talk
- References:
- Faster Scan Rates possible? Manoussakis, Adamandios via Tech-talk
- Navigate by Date:
- Prev:
Faster Scan Rates possible? Manoussakis, Adamandios via Tech-talk
- Next:
RE: Faster Scan Rates possible? Manoussakis, Adamandios 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:
Faster Scan Rates possible? Manoussakis, Adamandios via Tech-talk
- Next:
RE: Faster Scan Rates possible? Manoussakis, Adamandios 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, 09 Dec 2020 |
·
Home
·
News
·
About
·
Base
·
Modules
·
Extensions
·
Distributions
·
Download
·
·
Search
·
EPICS V4
·
IRMIS
·
Talk
·
Bugs
·
Documents
·
Links
·
Licensing
·
|