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run: probe phase for undistorted per-request findings; failed-response warning - #15
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From running
traceperf runon lujakob/nestjs-realworld-example-app (NestJS 7, TypeORM, Postgres).Under concurrent load every await also waits for the saturated event loop, so call times are inflated: four "check this query's plan" findings for 1 ms queries on tiny tables.
runnow sends--proberequests per path (default 10) one at a time after the warm-up and takes dominant / sequential / N+1 findings from them; blocking, queueing, errors and CPU cost still come from the load.Also: a first finding when most responses failed (an expired JWT used to produce "no issues found"), and once-in-10+ counts as an outlier.
Re-checked: NestJS (only the real CPU-cost finding left), Mongoose (
.lean()), RealWorld, planted apps.