Requirement

Enhancements to Trace statistics view

• Similar Self Time as Trace Graph page.
• Page to load faster for trace containing > 10K spans

Problem

Trace Statistics View is unresponsive for traces > 10K spans if second Group By with high cardinality like tag.db@statement are selected.

Currently, there are 2 views in which self time is computed.

• Trace Graph
• Trace Statistics

Both of them follow different logic.
Key difference being Trace Graph ignores the follows-from relationship since the producer span doesn't have any control over when will the consumer span start whereas the Trace Statistics view computes the self time factoring in the time spent between the start of the producer span and start of the consumer span.

Moreover the logic used in trace graph is much simpler and easier to understand whereas the trace statistics view logic is very complex and page is unresponsive when computing self time for traces containing > 10K spans.

Proposal

Use the similar logic in both Trace Graph & Trace Statistics views to compute the self time. If it's alright, I can raise a PR for the same.

Open questions

No response