Hi,
I'm running prometheus with lookback-delta=9m and scraping a metric every 5
minutes. I've seen issue when evaluating
'increase(ifHCInOctets{network_key="xxx"}[10m])/2' in recording rule.
I've reported that as a bug in
https://github.com/prometheus/prometheus/issues/9092, but I was told the
lookback-delta should be 15m so it's an issue of configuration.
But when I do the same query in grafana it shows correctly. So does the
lookback-delta have special meaning for recording rules?
My understanding was that the lookback delta is used per individual data
points, so the fact that the query/rule has range vector 10m has nothing to
do with the lookback delta. I have also recording rules doing "the same"
with 1h and 24h range vector and those work fine.
Could anyone please explain why I should use 15m lookback-delta?
Many thanks,
Marek Skalicky
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