Victor Sudakov wrote:
>
> There is a web app which exports its metrics as multiple histograms,
> one histogram per Web endpoint. So each set of histogram data is also
> labelled by the {endpoint} label. There are about 50 endpoints so
> about 50 histograms.
>
> I would like to detect and graph slow endpoints, that is I would like
> to know the value of {endpoint} when its {le} is over 1s or something
> like that.
>
> Can you please help with a relevant PromQL query and an idea how to
> represent it in Grafana?
>
> I don't actually want 50 heatmaps, there must be a clever way to make
> an overview of all the slow endpoints, or all the endpoints with a
> particular status code etc.
An example. The PromQL query
`app1_response_duration_bucket{external_endpoint="http://YY/XX",status_code="200",method="GET"}`
produces a histogram.
The PromQL query
`app1_response_duration_bucket{external_endpoint="http://YY/XX",status_code="200",method="POST"}`
produces another histogram.
The query `app1_response_duration_bucket{{le="0.75"}` will return a
list of endpoints which have responded faster than 0.75s.
How do I invert the "le" and find the endpoints slower than "le"?
--
Victor Sudakov VAS4-RIPE
http://vas.tomsk.ru/
2:5005/49@fidonet
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