Greg Pomerantz d5bbb41bbd Jank-hunt perf feature: FR/STG/DECODE instrumentation, off by default ... Residual scroll jank at 120 Hz (suspected Slint event-loop bug) needs per-frame + per-stage timing the logcat ring buffer can't hold. New cargo feature `perf` (default OFF — all sites are cfg-gated, zero overhead when off): - FR: per-frame app-side render cost + frame gap, from the rendering notifier (BeforeRendering/AfterRendering). - STG: event-loop stage costs (wake/timers/events/poll/lastrender) from timestamps instrumented into the pinned vendor copy of i-slint-backend-android-activity (stg.rs; Cargo.toml now depends on it directly + optional under `perf`). - DECODE: per-thumbnail-job cost on the workers. - All lines mirrored to /sdcard/Download/.gallery_perf.log (logcat rotates too fast at ~120 lines/s). Format + reading guide: docs/BUGS/scroll-jank-120hz.md.		2026-10-29 08:11:51 -04:00
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recreation-stale-textures.md	docs: recreation fix verified on phone (Mali G715)	2026-10-28 21:10:55 -04:00
scroll-jank-120hz.md	Jank-hunt perf feature: FR/STG/DECODE instrumentation, off by default	2026-10-29 08:11:51 -04:00
slint-skia-final-flush-jank.md	Root-cause and fix the Mali scroll jank; strip jank-hunt instrumentation	2026-10-28 18:23:50 -04:00