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

SigNoz Community

yes it does support sampling. Ideally it should be done at agent otel-collectors but can be done at signoz collectors also

<@U048AUM1HU6> are you deploying in k8s or a single VM?

No, I am not deploying yet. May I know what is open source license of SigNoz?

It seems to be that SigNoz only supports head-based sampling (provided by OpenTelemetry). It does not support tail-based sampling

If you can set up tail-based sampling using OpenTelemetry,  we can help you set up `spanmetricsprocessor` which calculates APM metrics before you sample the spans and hence the APM metrics will be correct as they will be based on 100% sampled data