Deterministic (seeded), in the app's own event model rather than a real transcript: 3,601 events split into a 3,200-event opening backlog and a 400-event tail both bench harnesses replay as the streaming phase, with headings, inline markdown, fenced code in six languages, a table, tool calls with kilobyte-scale input/output, and two embedded PNGs. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
29 lines
2.0 KiB
Markdown
29 lines
2.0 KiB
Markdown
# The P0 benchmark fixture
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`transcript.jsonl` is a synthetic transcript in the app's own event model (the JSON lines
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`GET /sessions/{id}/transcript` returns; see `Events.kt`'s `parseSeqEvent` and
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`server/src/session/driver.rs`) -- never a real one. It is what both the Compose `bench` build
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and iris's bench build open with no server, so the two apps draw exactly the same content and a
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frame-time comparison is measuring the renderer rather than the data.
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Generated by `./generate.py` (Python stdlib only, seeded -- `SEED = 20260905` -- so re-running it
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reproduces the same file byte for byte). It writes into `assets/` -- a separate directory from this
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script and README, because the Compose `bench` build type points its own asset source set straight
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at `assets/` (`app/androidApp/build.gradle.kts`'s `sourceSets { getByName("bench") }`), and a Python
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script and a markdown file have no business inside an APK:
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- `transcript.jsonl` -- 3,601 events. The first 3,200 (`BACKLOG_COUNT`) are the scrolled-back
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history the benchmark opens with: user turns, tool calls with kilobyte-scale input/output,
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assistant replies built from headings, bold/italic/inline code, a link, fenced code blocks that
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rotate through rust/kotlin/python/sh/json/toml, a markdown table, two embedded images, and
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periodic `usageDelta`/`compacted` events. The remaining 400 (`STREAM_COUNT`) are not part of the
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opening window -- both bench harnesses replay them at a fixed rate (20/s) through the same live
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fold path a real SSE reply arrives on, which is P0's "streaming phase."
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- `bench1.png`, `bench2.png` -- tiny (8x8) flat-colour PNGs, base64-free on disk but served the
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same way a real attachment is (`GET /sessions/{id}/files/{name}`), referenced by the two
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`"type":"image"` events in the transcript.
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Regenerate after changing the shape (a new event type, a different backlog/stream split) with
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`./generate.py`, and commit the result -- it is checked in rather than generated at build time so
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both apps' bench builds embed the identical bytes without needing this script at build time.
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