Thank for your quick answer and for the tips and tricks ! :) Le jeudi 16 avril 2020 13:25:05 UTC+2, Julius Volz a écrit : > > On Thu, Apr 16, 2020 at 12:05 PM Rico <[email protected] <javascript:>> > wrote: > >> So for the first query I have posted, must look likes this : >> >> avg((irate(http_server_requests_duration_seconds_sum{application="database-api", >> >> namespace="front-search-engine",path!="/ping",path!="/health",path!="/metrics",path!="/healthcheck",status="200"}[1m]) >> > 0) >> / >> (irate(http_server_requests_duration_seconds_count{application="database-api", >> >> namespace="front-search-engine",path!="/ping",path!="/health",path!="/metrics",path!="/healthcheck",status="200"}[1m]) >> > 0)) >> >> > One word of caution here: if I see this correctly, you are taking the > average of multiple averages, which is usually incorrect: > https://math.stackexchange.com/questions/95909/why-is-an-average-of-an-average-usually-incorrect > > If your goal is to calculate the overall average latency of your service, > you will want to just sum up over all sums and counts before doing the > division (and then you can omit the outer avg()). You probably don't need > the > 0 bit either then, so the whole expression would just become: > > sum(irate(xxx_sum{...}[1m])) > / > sum(irate(xxx_count{...}[1m])) > > Btw., you can also abbreviate: > > path!="/ping",path!="/health",path!="/metrics",path!="/healthcheck" > > ...to just: > > path!~"/(ping|metrics|healthcheck)" >
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