starlingx/monitoring
Code Issues Proposed changes

Update holdover threshold to 4 hours

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The verified holdover time for Columbiaville NICs is 4 hours, as per the
device user documentation. Updating the ptp plugin accordingly so that
upon GNSS signal loss, the ptp clockClass will be set to 7 (holdover)
for 4 hours before transitioning to 140 (freerun).

This corrects an issue where ptp endpoints were receiving freerun
notifications after 1 hour instead of the expected 4 hours.

Test plan:
PASS: Verfied ptp plugin operation and 4 hour holdover time on AIO-SX

Closes-bug: 1995011

Signed-off-by: Cole Walker <cole.walker@windriver.com>
Change-Id: Ie17419b8cfe48550a1bd01e3902fc38d5b61decd
This commit is contained in:
Cole Walker
2022-10-28 10:45:21 -04:00
parent 43f53c6b83
commit 6bf2f0d264
1 changed files with 3 additions and 1 deletions
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4
collectd-extensions/src/ptp.py
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@@ -196,7 +196,9 @@ CLOCK_CLASS_140 = '140' # T-GM in holdover, out of holdover specification
CLOCK_CLASS_248 = '248' # T-GM in free-run mode
# Time interval for holdover within spec (seconds)
HOLDOVER_THRESHOLD = 3600
# Holdover threshold is set to 4 hours to match the supported holdover time
# for Columbiaville NICs
HOLDOVER_THRESHOLD = 14400
# Leap second in nanoseconds
LEAP_SECOND = float(37000000000)