165 lines
6.4 KiB
Markdown
165 lines
6.4 KiB
Markdown
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# Bloat Audit — racked.ru launcher
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**Date:** 2026-04-30
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**Total runtime size:** ~1.3 GB (`launcher/`)
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**Goal:** identify what's strippable without breaking "load Minecraft reliably"
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---
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## TL;DR
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| Category | Size | Strippable? |
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|---|---|---|
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| Mojang game assets (`assets/`) | 552M | **No** — needed by MC |
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| Bundled Java 21 (`java/jdk-21.0.9+10/`) | 346M | No, but see below |
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| Java tar.gz leftover (`java/java21.tar.gz`) | **198M** | **YES — instant win** |
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| MC libraries (`libraries/`) | 99M | No |
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| User instance (`instances/Fabulously Optimized/`) | 88M | No (user data) |
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| Launcher binary (`bin/prismlauncher`) | 15M | Partial (strip + LTO) |
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| Cache (`cache/`) | 5.5M | Yes (regenerated) |
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| Translations | 692K | Mostly (see below) |
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| Misc state (logs, metacache, sync-conflicts) | ~1M | Yes |
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**Quick wins:** **~200 MB instantly** (java tar.gz + sync conflicts + cache).
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---
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## Runtime layout (`launcher/`)
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```
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552M assets/ Mojang resources — textures, sounds. Lookup by hash. KEEP.
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543M java/
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198M java21.tar.gz ← extracted already, DELETE
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346M jdk-21.0.9+10/ runtime, KEEP (or move outside launcher)
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99M libraries/ MC + Fabric + Forge libs, on-demand cache. KEEP.
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88M instances/ user world + modpack. SACRED.
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15M bin/prismlauncher main binary
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5.5M cache/ HTTP/asset cache, REGENERATES. delete-safe.
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692K translations/
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319K mmc_en_GB.qm keep
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316K mmc_en_GB.sync-conflict...qm ← Syncthing leftover, DELETE
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26K index_v2.json keep
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26K index_v2.sync-conflict...json ← DELETE
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196K images/ backgrounds (cat). Strip if no cat wanted.
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56K share/
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40K metacache/
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12K icons/
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0 themes/ iconthemes/ catpacks/ empty
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```
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### Immediate deletes (safe, ~200M):
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```bash
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cd launcher/
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rm java/java21.tar.gz # 198M
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rm translations/*.sync-conflict-* # 316K + 26K
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rm prismlauncher.sync-conflict-*.cfg metacache.sync-conflict-* 2>/dev/null
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rm -rf cache/* # 5.5M (regens)
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```
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### Optional moves:
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- **Java outside launcher folder** — if portability not strictly USB-required, point `JavaPath` at a system Java 21 install. Saves 346M from the launcher tree. Already configured in `prismlauncher.cfg:JavaPath`.
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---
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## Source bloat (`source/`, ~13M)
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Compile-time only. Trimming reduces binary size + build time.
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### Icon themes — biggest source bloat (~5.5M)
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`source/launcher/resources/` contains **17 icon theme dirs**:
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| Theme | Size | Used? |
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|---|---|---|
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| `multimc/` | 3.0M | No (legacy) |
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| `backgrounds/` | 1.4M | Cat backgrounds |
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| `sources/` | 400K | SVG masters |
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| `flat_white/` | 208K | **YES (default)** |
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| `flat/` | 208K | No |
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| `breeze_light/` `breeze_dark/` | 408K | No |
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| `pe_light/dark/colored/blue/` | 752K | No |
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| `iOS/` `OSX/` | 324K | No |
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| `racked_ru/` | 12K | YES (custom) |
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| `shaders/` `assets/` `documents/` | 36K | Various |
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**Strippable:** all except `flat_white/`, `racked_ru/`, `sources/`, `assets/`, `shaders/`. Saves ~5M from binary qrc.
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### Mod platforms (`source/launcher/modplatform/`, 564K)
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| Platform | Size | Modern? |
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|---|---|---|
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| `flame/` (CurseForge) | 124K | Yes |
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| `modrinth/` | 92K | Yes |
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| `atlauncher/` | 80K | Niche |
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| `technic/` | 52K | Dying |
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| `legacy_ftb/` | 36K | Dead |
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| `ftb/` | 32K | Use modrinth instead |
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| `import_ftb/` | 24K | Pair w/ ftb |
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| `packwiz/` | 20K | Niche |
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**Recommended keep:** `flame/`, `modrinth/`, helpers, generic. **Strippable:** atlauncher + technic + legacy_ftb + ftb + import_ftb + packwiz = ~244K source, ~1-2M off binary after compile.
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### News system
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Already audited (`NETWORK_AUDIT.md`). News fetches RSS from prismlauncher.org on every startup. Strippable:
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- `source/launcher/news/` — `NewsChecker.cpp/h`, `NewsEntry.cpp/h`
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- `source/launcher/ui/dialogs/NewsDialog.{cpp,h,ui}`
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- News toolbar button in `MainWindow.ui`
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- `news.svg` icons across themes
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Saves: ~30K source, removes 1 outbound network call on startup, removes "News" toolbar button.
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### Other strip candidates
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| Component | Source size | Worth stripping? |
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|---|---|---|
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| `tests/` | 928K | **Already excluded from runtime build** — leave for dev, or `rm -rf` if no tests run |
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| `nix/` + `flake.*` | 28K | If not building via Nix, delete |
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| `.github/` | 136K | Workflows for upstream CI, drop in fork |
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| `program_info/` translations of metainfo | 888K | Bulk is icons (.icns/.ico/.png), required for OS integration |
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| `libraries/` (vendored quazip, tomlplusplus, etc.) | 648K | Required, system libs an option but fragile |
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| Setup wizard (`launcher/ui/setupwizard/`) | 68K | First-run only — keep |
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| Screenshots gallery (`launcher/ui/screenshots`?) | 24K | Niche |
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---
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## Stripped binary
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`bin/prismlauncher` 15M. Likely already release-built. Confirm:
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```bash
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file bin/prismlauncher # should say "stripped"
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strip --strip-all bin/prismlauncher 2>/dev/null # idempotent
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```
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If unstripped, can drop several MB.
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LTO + `-Os` at CMake configure: `-DCMAKE_BUILD_TYPE=MinSizeRel -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON` — typically 10–20% binary shrink.
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---
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## Reliability cost of each strip
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| Strip | Reliability impact |
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| Delete java tar.gz | Zero — already extracted |
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| Delete sync-conflicts | Zero |
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| Delete cache/ | Zero — regenerates on first launch |
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| Drop unused icon themes | Zero — user can't pick them anyway |
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| Drop FTB/Technic/ATLauncher modplatforms | Zero **if** user only uses CurseForge/Modrinth |
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| Disable news | Zero — purely informational, also removes online startup hit |
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| Move bundled Java to system Java | Low — if system Java 21 missing, breaks. Keep bundled for portability |
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| Strip backgrounds | Zero — cat purely cosmetic |
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| Drop multimc/ icon theme | Zero — legacy default replaced by flat_white |
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None of the proposed strips touch MC launching, auth, asset download, mod loading, or world saves.
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---
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## Recommended action plan (ordered by ROI)
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1. **Now (~200M, zero risk):** delete `java/java21.tar.gz`, sync-conflict files, `cache/*`
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2. **Source trim, next rebuild:** drop 12 unused icon themes, FTB/Technic/ATLauncher modplatforms, news system
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3. **Build flags:** `MinSizeRel` + LTO + `strip --strip-all`
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4. **Optional:** move Java out of `launcher/` if portability not required
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Estimated final size after all: **~700 MB** (down from 1.3 GB). Most remaining is non-strippable (Mojang assets, MC libs, user instance, Java).
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