Recording rule eval interval how longe should I can set? less than 5m?

[Allenzh li]

I want to count the average value of each hour of a metric and I have created a recording rule as follow:

```

    - name: inspection-platform-CVMAndPhysical

      interval: 1h

      rules:

        - record: vm:xxx_cpu_usage:avg1h

          expr: avg_over_time(avg by (label1, lable2) (xxxx_cpu_usage)[1h:])

```

When I make a range query request to the recording data with step > 5m, return empty.

I have google some case find that range query just eval 5m in every step.

So how should I use recording rule?

[Stuart Clark]

As with all metrics (scraped or created via recording rule) you need to
be setting the scrape/interval to less than 5 minutes otherwise a metric
will be marked as stale and not returned. In practice 2 minutes is the
maximum sensible scrape interval, and while you could make it a bit
longer for recording rules it still needs to be short enough to ensure
there is never more than 5 minutes between points.

[lizhihua0925]

Thank you for your reply.

Got it.