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[PERF] Cartridge Boot and Program Ownership

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bQUARKz 2026-04-20 14:10:47 +01:00
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discussion/index.ndjson
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@ -22,7 +22,7 @@
{"type":"discussion","id":"DSC-0027","status":"done","ticket":"frame-composer-public-syscall-surface","title":"Agenda - FrameComposer Public Syscall Surface","created_at":"2026-04-17","updated_at":"2026-04-18","tags":["gfx","runtime","syscall","abi","frame-composer","scene","camera","sprites"],"agendas":[],"decisions":[],"plans":[],"lessons":[{"id":"LSN-0032","file":"lessons/DSC-0027-frame-composer-public-syscall-surface/LSN-0032-public-abi-must-follow-the-canonical-service-boundary.md","status":"done","created_at":"2026-04-18","updated_at":"2026-04-18"}]}
{"type":"discussion","id":"DSC-0028","status":"done","ticket":"deferred-overlay-and-primitive-composition","title":"Deferred Overlay and Primitive Composition over FrameComposer","created_at":"2026-04-18","updated_at":"2026-04-18","tags":["gfx","runtime","render","frame-composer","overlay","primitives","hud"],"agendas":[],"decisions":[],"plans":[],"lessons":[{"id":"LSN-0033","file":"lessons/DSC-0028-deferred-overlay-and-primitive-composition/LSN-0033-debug-primitives-should-be-a-final-overlay-not-part-of-game-composition.md","status":"done","created_at":"2026-04-18","updated_at":"2026-04-18"}]}
{"type":"discussion","id":"DSC-0014","status":"done","ticket":"perf-vm-allocation-and-copy-pressure","title":"Agenda - [PERF] VM Allocation and Copy Pressure","created_at":"2026-03-27","updated_at":"2026-04-20","tags":[],"agendas":[],"decisions":[],"plans":[],"lessons":[{"id":"LSN-0035","file":"lessons/DSC-0014-perf-vm-allocation-and-copy-pressure/LSN-0035-first-materialization-is-not-the-same-as-hot-path-copy-pressure.md","status":"done","created_at":"2026-04-20","updated_at":"2026-04-20"}]}
{"type":"discussion","id":"DSC-0015","status":"open","ticket":"perf-cartridge-boot-and-program-ownership","title":"Agenda - [PERF] Cartridge Boot and Program Ownership","created_at":"2026-03-27","updated_at":"2026-03-27","tags":[],"agendas":[{"id":"AGD-0014","file":"workflow/agendas/AGD-0014-perf-cartridge-boot-and-program-ownership.md","status":"open","created_at":"2026-03-27","updated_at":"2026-03-27"}],"decisions":[],"plans":[],"lessons":[]}
{"type":"discussion","id":"DSC-0015","status":"abandoned","ticket":"perf-cartridge-boot-and-program-ownership","title":"Agenda - [PERF] Cartridge Boot and Program Ownership","created_at":"2026-03-27","updated_at":"2026-04-20","tags":[],"agendas":[{"id":"AGD-0014","file":"workflow/agendas/AGD-0014-perf-cartridge-boot-and-program-ownership.md","status":"abandoned","created_at":"2026-03-27","updated_at":"2026-04-20","_override_reason":"User explicitly chose to close the discussion without decision because FS->memory copy for the program is already acceptable."}],"decisions":[],"plans":[],"lessons":[],"_override_reason":"User explicitly chose to abandon the discussion without creating a decision because FS->memory copy for the program is already acceptable."}
{"type":"discussion","id":"DSC-0016","status":"done","ticket":"tilemap-empty-cell-vs-tile-id-zero","title":"Tilemap Empty Cell vs Tile ID Zero","created_at":"2026-03-27","updated_at":"2026-04-09","tags":[],"agendas":[{"id":"AGD-0015","file":"workflow/agendas/AGD-0015-tilemap-empty-cell-vs-tile-id-zero.md","status":"done","created_at":"2026-03-27","updated_at":"2026-04-09"}],"decisions":[],"plans":[],"lessons":[{"id":"LSN-0022","file":"lessons/DSC-0016-tilemap-empty-cell-semantics/LSN-0022-tilemap-empty-cell-convergence.md","status":"done","created_at":"2026-04-09","updated_at":"2026-04-09"}]}
{"type":"discussion","id":"DSC-0017","status":"done","ticket":"asset-entry-metadata-normalization-contract","title":"Asset Entry Metadata Normalization Contract","created_at":"2026-03-27","updated_at":"2026-04-09","tags":[],"agendas":[{"id":"AGD-0016","file":"workflow/agendas/AGD-0016-asset-entry-metadata-normalization-contract.md","status":"done","created_at":"2026-03-27","updated_at":"2026-04-09"}],"decisions":[{"id":"DEC-0004","file":"workflow/decisions/DEC-0004-asset-entry-metadata-normalization-contract.md","status":"accepted","created_at":"2026-04-09","updated_at":"2026-04-09"}],"plans":[],"lessons":[{"id":"LSN-0023","file":"lessons/DSC-0017-asset-metadata-normalization/LSN-0023-typed-asset-metadata-helpers.md","status":"done","created_at":"2026-04-09","updated_at":"2026-04-09"}]}
{"type":"discussion","id":"DSC-0018","status":"done","ticket":"asset-load-asset-id-int-contract","title":"Asset Load Asset ID Int Contract","created_at":"2026-03-27","updated_at":"2026-03-27","tags":["asset","runtime","abi"],"agendas":[],"decisions":[],"plans":[],"lessons":[{"id":"LSN-0019","file":"lessons/DSC-0018-asset-load-asset-id-int-contract/LSN-0019-asset-load-id-abi-convergence.md","status":"done","created_at":"2026-03-27","updated_at":"2026-03-27"}]}

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discussion/workflow/agendas/AGD-0014-perf-cartridge-boot-and-program-ownership.md
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id: AGD-0014
ticket: perf-cartridge-boot-and-program-ownership
title: Agenda - [PERF] Cartridge Boot and Program Ownership
status: open
status: abandoned
created: 2026-03-27
resolved:
resolved: 2026-04-20
decision:
tags: []
---
@ -55,8 +55,11 @@ Fechar um modelo de ownership de cart/programa que reduza copias sem comprometer
## Open Questions de Arquitetura
1. O projeto quer boot otimizado para trocas frequentes ou apenas para cold start?
R: o runtime precisa ser otimizado para trocas frequentes. o ciclo pode ser: 1. run prometeu que fica rodando como uma plataforma, podendo trocar carts durante seu funcionamento. 2. run cart direto, ai funciona como um jogo separado. mas o funcionamento do boot do cart deve ser o mesmo em ambos os casos.
2. Existe risco real de aliasing/perigo de lifetime ao evitar copias aqui?
R: nao, o cart deve ser imutavel para o prometeu, de forma que este possa se tornar fonte da verdade. o grande vilao aqui eh remocao do cart no meio do runtime e coisas do tipo.
3. Vale aceitar copia de metadata pequena e atacar so `program`?
R: se nao me engano isso jah acontece com o asset_table, ele fica na memoria sempre depois do boot. e sim, eh completamente valido, isso o problema eh aceitar copia de tudo indiscriminadamente.
## Dependencias