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# support

Slackbot

11/30/2022, 8:33 PM

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Alexei Zenin

11/30/2022, 8:35 PM

trace pipeline config:

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traces:
  receivers: [otlp]
  processors: [memory_limiter, signozspanmetrics/prometheus, probabilistic_sampler, batch]
  exporters: [otlphttp]

Alexei Zenin

11/30/2022, 8:35 PM

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probabilistic_sampler:
  hash_seed: 42
  sampling_percentage: 10

Srikanth Chekuri

11/30/2022, 10:32 PM

This table is not using the spanmetrics data. Since it’s using the traces data, you don’t see the accurate total calls.

Alexei Zenin

11/30/2022, 10:32 PM

Would it make more sense for it to display total calls and not the ones sampled?

Alexei Zenin

11/30/2022, 10:33 PM

Are the other columns also not displaying span metrics data? Are P99 etc showing inaccurate numbers as well?

Vishal Sharma

12/01/2022, 1:48 AM

Key operations table and Latency graph are fetched from traces data. We should move them to fetching data from metrics. cc: @Ankit Nayan

👍 1

Vishal Sharma

12/01/2022, 1:59 AM

Created an issue: https://github.com/SigNoz/signoz/issues/1793

Alexei Zenin

01/06/2023, 4:40 PM

Do you know if error rate is fetched from traces or metrics? @Vishal Sharma

Alexei Zenin

01/06/2023, 4:41 PM

cc @Pranay

Vishal Sharma

01/06/2023, 4:54 PM

@Alexei Zenin Error rate is fetched from metrics

👍 1

Alexei Zenin

01/06/2023, 4:55 PM

thanks, these are the metrics computed by signozspanmetrics processor?

Alexei Zenin

01/06/2023, 6:52 PM

cc @Andrew Uken

Vishal Sharma

01/07/2023, 2:52 AM

Yes

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SigNoz is an open-source APM. It helps developers monitor their applications & troubleshoot problems, an open-source alternative to DataDog, NewRelic, etc.