Similar to T199968#4455425 some investigation after being confused by numbers has lead us to find the aggregation of the metric is wrong.
Metric name: "MediaWiki.RevisionSlider.event.load.sum"
addshore: \o godog, is there any chance you could check the aggregation of a couple of graphite metrics for me? I'm doing an investigation similar to https://phabricator.wikimedia.org/T199968
addshore: godog: the metric is MediaWiki.RevisionSlider.event.load.sum
godog: addshore: hi, sure, yeah same thing, aggregationMethod: average
godog: addshore: I'm off to lunch, bbl
addshore: godog: thanks, I'll file a ticket for fixing it so we can track this!
It would be nice if someone could write and run a script on graphite to audit all of the metric aggregation methods.
We have hit 2 metrics somehow affected by this now and I imagine there might also be more.