Avoid setting tags on not sampled traces #15
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Setting tags/events on a trace that is not sampled (!IsAllDataRequested) is a wate of CPU since the trace won't be exported. From the doc: https://learn.microsoft.com/en-us/dotnet/core/diagnostics/distributed-tracing-instrumentation-walkthroughs > If you're instrumenting functions with high-performance requirements, > Activity.IsAllDataRequested is a hint that indicates whether any of > the code listening to Activities intends to read auxiliary information > such as Tags. If no listener will read it, then there is no need for > the instrumented code to spend CPU cycles populating it.
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Setting tags/events on a trace that is not sampled (!IsAllDataRequested) is a waste of CPU since the trace won't be exported.
From the doc: https://learn.microsoft.com/en-us/dotnet/core/diagnostics/distributed-tracing-instrumentation-walkthroughs