| 2002 2003 2004 2005 <2006> 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 | Index | 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: | CA client (on IOC) question |
| From: | Ralph Lange <[email protected]> |
| To: | EPICS Core Talk <[email protected]> |
| Date: | Tue, 08 Aug 2006 12:56:33 +0200 |
Hello Core,looking at bad things happening and logs from our network switches it seems that the CA client that runs on the IOC does a name resolve request whenever any record with a link pointing into nirwana (aka an unconnected link) is being processed. Example: on IOC1, there are 100 records (scanned at 10 Hz) pointing to 100 other records sitting on IOC2. As soon as IOC2 is down, IOC1 broadcasts a name resolution request for those 100 channels 10 times a second.
Is that true? Is that smart? Confused, Ralph(trying to find out why a single IOC going halfway down drives _all_ our IOCs into 95+ percent of cpu usage)