How to setup profiling with traces_sampler #3039

paxw-panevo · 2024-05-02T16:02:33Z

paxw-panevo
May 2, 2024

In the docs, it says that

The profiles_sample_rate setting is relative to the traces_sample_rate setting.

We use a traces_sampler. Is my assumption correct that sentry can only profile what's been traced? Is it correct, then, that regardless whether we use profiles_sampler or profiles_sample_rate, it is still relative to whatever traces_sampler returns?

Answered by antonpirker

Jun 20, 2024

Yes, you are correct, profiles can be only recorded to sampled traces.

For example if you have set profiles_sample_rate=0.2 and in your traces_sampler you discard 60% of your traces, there will be profiles attached to 20% (the 0.2) of the remaining 40% of the traces that have been sampled by traces_sampler.

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antonpirker · 2024-06-20T10:03:54Z

antonpirker
Jun 20, 2024

Yes, you are correct, profiles can be only recorded to sampled traces.

For example if you have set profiles_sample_rate=0.2 and in your traces_sampler you discard 60% of your traces, there will be profiles attached to 20% (the 0.2) of the remaining 40% of the traces that have been sampled by traces_sampler.

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How to setup profiling with traces_sampler #3039

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paxw-panevo May 2, 2024

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antonpirker Jun 20, 2024

paxw-panevo
May 2, 2024

antonpirker
Jun 20, 2024