74 lines
3.1 KiB
Markdown
74 lines
3.1 KiB
Markdown
# Compose bench report from Iris's phone, 2026-09-06
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The Compose half of P0 (RUST.md), run by Iris on her own phone and pasted
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back verbatim. The iris half's report goes beside it in this directory
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when it exists. Her caveat, worth keeping with the numbers: "I don't think
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this is entirely fair because the UI for iris is more minimal" -- the
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Compose screen also draws the usage bar, the status row and tool cards,
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which the iris bench screen does not yet. Her impression of the iris build
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before its first-touch bug: "it already feels very smooth so far".
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What to read first: the phone runs at 120 Hz, so the budget is 8.3 ms;
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`late` is measured against that. Compose's tail is the streaming phase --
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`markdown reparsed while streaming: 396, 8.5ms mean, 25.8ms worst` and
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`record: one block: 398, 6.3ms mean, 19.9ms worst` -- which is exactly the
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path iris's `TranscriptScreen::apply` (replace the last row only) is meant
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to beat. Process CPU over the run is 20.9 s of a 38.5 s run; peak RSS
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587 MB; battery current mean 419 mA.
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```
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ai-app render report
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device: Pixel 9 Pro XL (Google), Android 17
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build: release
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transcript:
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43 events, 41 rows, 93 units loaded
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viewport 1333px, 2 units visible
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on screen: the list's own 0px, AssistantMsg 24520px
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0 tool calls and 0 groups open
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frames:
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1613 frames over 38.5s at 120Hz (8.3ms budget)
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late: 742 (46.0%)
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total p50 7.7ms p90 29.2ms p99 41.1ms
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waited p50 0.5ms p90 12.9ms p99 27.2ms
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input p50 0.0ms p90 0.0ms p99 0.0ms
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anim p50 1.1ms p90 5.8ms p99 9.5ms
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layout p50 0.0ms p90 0.1ms p99 0.2ms
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draw p50 0.4ms p90 15.9ms p99 27.9ms
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sync p50 0.1ms p90 0.5ms p99 1.0ms
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issue p50 1.1ms p90 1.7ms p99 3.0ms
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swap p50 0.4ms p90 0.5ms p99 0.7ms
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gpu p50 1.8ms p90 2.1ms p99 6.6ms
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where the draw phase went:
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draw phase 3.83ms per frame, of which:
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the transcript: 0.25ms (measure 0.15, place 0.10, record 0.00)
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everything else: 3.58ms (93%)
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work since this was last copied:
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draw: the whole transcript: 12, 0.2ms total, 0.0ms mean, 0.0ms worst
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grouped tool runs: 398, 10.3ms total, 0.0ms mean, 0.1ms worst
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markdown cut into pieces: 1, 0.0ms total, 0.0ms mean, 0.0ms worst
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markdown parsed while composing: 7, 3.0ms total, 0.4ms mean, 0.5ms worst
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markdown ready: 46
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markdown reparsed while streaming: 396, 3384.6ms total, 8.5ms mean, 25.8ms worst
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markdown warmed: 1, 1.4ms total, 1.4ms mean, 1.4ms worst
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measure: the whole transcript: 957, 248.7ms total, 0.3ms mean, 15.7ms worst
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message composed: 403
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message cut into parts: 1, 0.1ms total, 0.1ms mean, 0.1ms worst
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place: the whole transcript: 1319, 162.4ms total, 0.1ms mean, 1.3ms worst
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record: one block: 398, 2498.7ms total, 6.3ms mean, 19.9ms worst
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session screen recomposed: 413
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status row recomposed: 1
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unit composed: 538
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units flattened: 399, 44.3ms total, 0.1ms mean, 0.5ms worst
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usage bar recomposed: 413
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bench:
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scroll: 6 cycles (24 swipes), streamed 400/400 fixture events
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process CPU time over this run: 20907ms
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peak RSS: 587356kB
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battery current: mean -418509µA over 39 samples (min -1988281, max -107812)
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```
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