Fix memory leak, reduce I/O, parallelize extensions, add code splitting + mimalloc + LTO#532
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mehmetozguldev merged 3 commits intoFeb 18, 2026
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…ng + mimalloc + LTO - plug unbounded Map growth in app-store (lastBufferContent/historyDebounceTimers never cleared on buffer close) - debounce saveSessionToStore so closing 10 tabs = 1 disk write instead of 10 - extensions load in parallel via Promise.allSettled instead of sequential await loop - lazy-load 9 heavy components (terminal, sqlite viewer, diff viewer, PR viewer, image/pdf/web viewer, agent tab, external editor) + UpdateDialog - add mimalloc as global allocator (~2x faster small allocs vs default Windows heap) - add lto="thin" + codegen-units=1 for release builds (~5-8% runtime gain)
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Reviewed and verified locally after the latest update. CI formatting issues are fixed, and the performance-focused changes look good to merge.
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what this does
6 performance fixes, all verified against the actual codebase. no speculative stuff.
memory leak —
lastBufferContentandhistoryDebounceTimersin app-store are module-level Maps that grow every time a buffer opens but never shrink when it closes. added a cleanup function that gets called incloseBufferForce.debounce disk writes —
saveSessionToStoregets called 6 different places across buffer operations. closing 10 tabs = 10 synchronous writes. wrapped it in a 300ms debounce so it batches into 1.parallel extension loading — extensions were loading in a sequential
for...awaitloop. switched toPromise.allSettledso they all load at once. one failing extension no longer blocks the rest either.code splitting — 9 heavy components in pane-container (terminal, sqlite viewer, diff viewer, PR viewer, image/pdf/web viewer, agent tab, external editor) and UpdateDialog in App.tsx were eagerly imported. converted to
React.lazy+Suspenseso they only load when actually needed.mimalloc — added as global allocator. the default Windows heap is slow for the small frequent allocations rust does. mimalloc is purpose-built for this.
LTO + codegen-units — added
lto="thin"andcodegen-units=1to release profile. lets LLVM optimize across crate boundaries and produce tighter binaries.files changed
src/stores/app-store.ts— export cleanup function for buffer history trackingsrc/features/editor/stores/buffer-store.ts— debounce wrapper + cleanup call on closesrc/extensions/loader/extension-loader.ts— Promise.allSettledCargo.toml— release profilesrc-tauri/Cargo.toml— mimalloc depsrc-tauri/src/main.rs— global allocatorsrc/App.tsx— lazy UpdateDialogsrc/features/panes/components/pane-container.tsx— lazy 9 components + Suspensetypecheck passes clean.