Experimental Physics and
Industrial Control System

Ralph Lange via Core-talk <core-talk at aps.anl.gov> · Sun, 02 Feb 2020 16:36:22 -0000

Sure. This has been working for a long time, including the 7.0.3
release.

The interesting question is why the behavior has changed with the switch
to monotonic time.

BTW. Can you verify that is was exactly that commit changing the behavior?
https://github.com/epics-base/epics-base/commit/4f2228fb1d7527fb5ebc8b2d747c309f1dd7698d

That would make sure that we're talking about the real things here.

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https://bugs.launchpad.net/bugs/1861612

Title:
  callbackRequestDelay not waiting for 1/60 sec on vxWorks

Status in EPICS Base:
  New

Bug description:
  The problem is documented in this tech-talk thread:
  https://epics.anl.gov/tech-talk/2020/msg00308.php

  In 7.0.3.1, but not in 7.0.3, callbackRequestDelay(1/60) results in
  100% CPU time, most of the time in cbHigh.

  This happens on vxWorks 6.9.4.1 and was first seen with the scaler
  record with multiple types of scaler hardware and device support.

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System