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Every recorded case states what it measures and which user scenario it affects, shown on hover in the report. Endpoints whose workers report process CPU time default to the measured non-CPU share and busy parallelism; the Session corpus worker now reports CPU time per endpoint. Machine profiles carry logical CPU counts, and the page shows each default share with its source and can reset overrides.
Session corpus benchmarks
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Summary
Measure the Web Host's Session list, content search, and fork over synthetic corpora in which every Session is at least as long as the same quantile of a measured local DSH corpus. Search and fork run over separate 1,000-Session corpora; the list runs over 3,000, the largest count that keeps this file within five minutes on standard hosted CI. Content search models a deployment that opts in with openAt: first-search; shipped profiles disable it. No case uses network services, recorded Sessions, or a browser.
Table of Contents
Run
From the repository root, build the libraries and workers with pnpm run build:bench, then run pnpm exec vitest run --config vitest.bench.config.ts benchmarks/session-corpus/session-corpus.bench.ts. Do not overlap timing runs with builds or other benchmarks. Seeding writes about 1.5 GB of Zstandard logs under a private temporary root, which the test removes after success or failure.
The test reports every fresh-process sample, the CPU model, available parallelism, platform, and Node version, and enforces median budgets. Its last case fails when the file, including seeding, exceeds five minutes. A failed worker reports its exit, signal, timeout, and stderr tail. The required benchmark lane discovers this file automatically.
Measurements
corpus-shape.ts holds the measured quantile anchors. synthetic-corpus.ts authors one event body per anchor and stores each Session as its own header frame followed by that body. The Agent Note owns the workload derivation, timing endpoints, calibration, and exclusions.
| Case | Corpus | Timed endpoints |
|---|---|---|
| List | 3,000 Sessions | Host boot; first and repeated session.list, each returning every Session with cached projections |
| Content search | 1,000 Sessions | First session.search, which builds the in-memory index; a second query over the built index |
| Fork | 1,000 Sessions | session.fork return for ten length strata, the p99 Session, and the longest Session |
Dev Note
None.