94 lines
3.7 KiB
Markdown
94 lines
3.7 KiB
Markdown
# Compose bench v2 report from Iris's phone, 2026-09-06
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Bench v2 (fling / stream / type / keyboard, RUST.md's P0 box) on the
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Compose `bench` build, run by Iris on her Pixel 9 Pro XL, verbatim. Note
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the display was at **60 Hz** for this run (16.7 ms budget) where the v1
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run was at 120 Hz -- the phone's adaptive refresh rate decides, and
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`late` is judged against whichever it was, so compare a run with a run at
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the same rate. The iris v2 report goes beside this when it exists.
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What it says: fling, type and keyboard are all essentially clean on
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Compose (0.1%, 0.9% and 0% late; fling p50 5.5 ms, p99 11.6 ms). The
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whole tail is the streaming phase again -- 41.9% late, p99 42.5 ms,
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driven by `markdown reparsed while streaming` (8.6 ms mean, 30.3 ms
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worst) and `record: one block` (6.3 ms mean, 25.5 ms worst). Process CPU
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69.6 s over the 125.5 s run; peak RSS 577 MB; battery current mean
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571 mA over 126 samples.
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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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108 events, 26 rows, 58 units loaded
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viewport 1531px, 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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per phase:
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fling: 3278 frames over 32.7s
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late: 4 (0.1%)
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total p50 5.5ms p90 8.7ms p99 11.6ms
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worst 49.0ms
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stream: 1041 frames over 21.3s
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late: 436 (41.9%)
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total p50 13.4ms p90 31.7ms p99 42.5ms
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worst 52.5ms
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type: 2446 frames over 61.5s
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late: 23 (0.9%)
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total p50 7.3ms p90 13.2ms p99 16.5ms
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worst 38.9ms
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keyboard: 358 frames over 10.0s
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late: 0 (0.0%)
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total p50 6.3ms p90 8.6ms p99 11.1ms
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worst 12.0ms
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frames:
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7122 frames over 125.5s at 60Hz (16.7ms budget)
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late: 463 (6.5%)
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total p50 6.0ms p90 13.8ms p99 34.0ms
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waited p50 0.5ms p90 1.1ms p99 19.9ms
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input p50 0.0ms p90 0.0ms p99 0.0ms
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anim p50 0.7ms p90 4.5ms p99 7.6ms
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layout p50 0.1ms p90 0.1ms p99 0.2ms
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draw p50 0.7ms p90 2.9ms p99 21.9ms
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sync p50 0.1ms p90 0.2ms p99 0.6ms
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issue p50 1.4ms p90 2.4ms p99 3.2ms
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swap p50 0.4ms p90 0.8ms p99 1.2ms
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gpu p50 1.5ms p90 2.1ms p99 6.6ms
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where the draw phase went:
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draw phase 1.74ms per frame, of which:
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the transcript: 0.24ms (measure 0.10, place 0.14, record 0.00)
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everything else: 1.51ms (86%)
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work since this was last copied:
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draw: the whole transcript: 280, 1.9ms total, 0.0ms mean, 0.0ms worst
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grouped tool runs: 407, 18.6ms total, 0.0ms mean, 0.2ms worst
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markdown cut into pieces: 40, 0.4ms total, 0.0ms mean, 0.0ms worst
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markdown parsed while composing: 2, 1.6ms total, 0.8ms mean, 1.1ms worst
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markdown ready: 323
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markdown reparsed while streaming: 395, 3406.9ms total, 8.6ms mean, 30.3ms worst
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markdown warmed: 40, 38.2ms total, 1.0ms mean, 4.3ms worst
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measure: the whole transcript: 1978, 683.9ms total, 0.3ms mean, 15.9ms worst
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message composed: 397
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message cut into parts: 40, 2.9ms total, 0.1ms mean, 0.2ms worst
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place: the whole transcript: 4308, 996.0ms total, 0.2ms mean, 2.4ms worst
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record: one block: 394, 2472.7ms total, 6.3ms mean, 25.5ms worst
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session screen recomposed: 1630
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status row recomposed: 1
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transcript page from server: 10
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unit composed: 927
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units flattened: 408, 85.5ms total, 0.2ms mean, 1.8ms worst
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bench:
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fling: 8 flings out + 8 back at 12000px/s, travel start=idx=0/off=0px outward=idx=188/off=182px end=idx=0/off=0px
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scroll: 6 cycles (24 swipes, legacy tween), streamed 400/400 fixture events
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type: 600 characters inserted then deleted, one per 50ms
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keyboard: shown 5/5, hidden 5/5 (confirmed via isImeVisible)
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process CPU time over this run: 69564ms
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peak RSS: 577452kB
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battery current: mean -571483µA over 126 samples (min -2361718, max -99218)
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```
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