Experimental Physics and
Industrial Control System

"Konrad, Martin" <[email protected]> · Fri, 4 May 2018 13:11:20 +0000

Hi,
I recently had to tweak the size of the cbLow and scanOnce queues on a
bunch of IOCs hosting a large number of PVs. Due to a lack of
diagnostics this turned out to be more tedious than I think it should
be. I was able to simplify the process by implementing simple IOC shell
functions that print queue usage and overflow information (see [1]). I'm
wondering if this might be useful enough to others to include this in Base.

I'm actually still undecided _where_ this kind of diagnostics should go
- into an IOC shell function or maybe into iocStats so it can be
monitored continuously? Pushing this to iocStats would probably require
a few changes to callback.[ch] to provide read access to some internal
data structures.

Any thoughts?

-Martin

[1]
https://code.launchpad.net/~info-martin-konrad/epics-base/+git/epics-base/+ref/callbackQueueStatus

-- 
Martin Konrad
High Performance Controls Team Leader
Facility for Rare Isotope Beams
Michigan State University
640 South Shaw Lane
East Lansing, MI 48824-1321, USA
Tel. 517-908-7253
Email: [email protected]

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System