Datadog launched a beta for Global Percentiles, making it possible to compute accurate DogstatsD percentiles across hosts.
With the beta activated histograms percentiles are calculated server-side (by sending sketches of the histogram data per host to the server), instead of at the host.
Please drop an email to email@example.com to have the beta activated!
By using the beta, Datadog provides the min, count, sum, avg, p50, p75, p90, p95, p99, max for each unique tag combination for a given metric name.
Note that host-level tags will be stripped by default to reduce cardinality, but users will have the ability to optionally add back host-level tags as needed. Custom tags will be defined the same way as DogStatsD Histograms today.