While there is no direct comparison to InfluxDB in the article, look at the disk usage and (more importantly) disk I/O utilization, which is indistinguishable from zero on the graph, whereas before it was at 20-30% with the same load.
So not on par. Much, much better.
(Of course, Prometheus and InfluxDB are not perfect substitutes for one another, so there's much more to look at than just storage engine performance.)
While there is no direct comparison to InfluxDB in the article, look at the disk usage and (more importantly) disk I/O utilization, which is indistinguishable from zero on the graph, whereas before it was at 20-30% with the same load.
So not on par. Much, much better.
(Of course, Prometheus and InfluxDB are not perfect substitutes for one another, so there's much more to look at than just storage engine performance.)