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examples: Adjust doc comment for native histograms 

Signed-off-by: beorn7 <beorn@grafana.com>
This commit is contained in:
beorn7 2022-10-19 18:38:57 +02:00
parent 4e71e6ff20
commit 58a8ca4588
1 changed files with 11 additions and 4 deletions
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15
examples/random/main.go
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@ -53,10 +53,17 @@ func main() {
}, },
[]string{"service"}, []string{"service"},
) )
// The same as above, but now as a histogram, and only for the normal // The same as above, but now as a histogram, and only for the
// distribution. The buckets are targeted to the parameters of the // normal distribution. The histogram features both conventional
// normal distribution, with 20 buckets centered on the mean, each // buckets as well as sparse buckets, the latter needed for the
// half-sigma wide. // experimental native histograms (ingested by a Prometheus
// server v2.40 with the corresponding feature flag
// enabled). The conventional buckets are targeted to the
// parameters of the normal distribution, with 20 buckets
// centered on the mean, each half-sigma wide. The sparse
// buckets are always centered on zero, with a growth factor of
// one bucket to the text of (at most) 1.1. (The precise factor
// is 2^2^-3 = 1.0905077...)
rpcDurationsHistogram = prometheus.NewHistogram(prometheus.HistogramOpts{ rpcDurationsHistogram = prometheus.NewHistogram(prometheus.HistogramOpts{
Name: "rpc_durations_histogram_seconds", Name: "rpc_durations_histogram_seconds",
Help: "RPC latency distributions.", Help: "RPC latency distributions.",