Improve AMC13 backpressure monitoring
The value=true
warning threshold for the SLink backPressure
metric is a bit noisy - we often get false positives from this for short periods during the run.
It's not yet clear exactly what would be the best replacement for this, but calculating the 'fraction of time in backpressure' or 'fraction of time in ready' might be a good option. @kbunkow will investigate what quantity will work best.
Edited by Tom Williams