littlefox/neokom

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Performance review of the whole codebase #230

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opened 2026-10-21 19:05:08 +00:00 by littlefox · 1 comment

littlefox commented

2026-10-21 19:05:08 +00:00

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User, 2026-10-21 (D-058): "When you're done with the issues I gave you. I want you to also make a general investigation into the codebase and see where we can get improvements in performance and resource usage. Things are relatively heavy as they are now"

After #225–#229: go through the client library, the app, the relay and the build (binary and wasm size, startup, idle CPU, network round trips, allocations, the web image). File what is worth doing as separate issues in 0.6, with the measured or estimated gain.

User, 2026-10-21 (D-058): "When you're done with the issues I gave you. I want you to also make a general investigation into the codebase and see where we can get improvements in performance and resource usage. Things are relatively heavy as they are now" After #225–#229: go through the client library, the app, the relay and the build (binary and wasm size, startup, idle CPU, network round trips, allocations, the web image). File what is worth doing as separate issues in 0.6, with the measured or estimated gain.

littlefox added this to the 0.6: Performance milestone

2026-10-21 19:05:08 +00:00

littlefox added the

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2026-10-21 19:05:08 +00:00

littlefox referenced this issue

2026-10-21 19:08:07 +00:00

Web download: 4.5 MB of wasm, a quarter of it debug info #231

littlefox referenced this issue

2026-10-21 19:08:08 +00:00

Local search index: up to ~80 MB in memory, and rewritten on every post once full #232

littlefox referenced this issue

2026-10-21 19:08:09 +00:00

Idle cost: timers and global signals that redraw while nothing happens #233

littlefox referenced this issue

2026-10-21 19:08:24 +00:00

Fewer server round trips when showing posts and threads #234

littlefox referenced this issue

2026-10-21 19:08:40 +00:00

Reading view redraws everything, and every post read reloads the whole thread #226

littlefox referenced this issue

2026-10-21 19:08:41 +00:00

Memory grows without bound in big meetings (close to 1 GiB) #227

littlefox referenced this issue

2026-10-21 19:08:41 +00:00

Jittery scrolling through unread posts #228

littlefox commented

2026-10-21 19:08:42 +00:00

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Owner

Review done; what it found is filed in 0.6:

#231 web download: 4.5 MB of wasm, 1.3 MB of it debug info, and no release profile;
#232 local search index: up to ~80 MB in memory; on desktop the whole file is rewritten per post once full;
#233 idle cost: the 250 ms seen-poll, a 30 s clock that redraws whole threads, presence that redraws every dot;
#234 server round trips: cards loaded one by one, previews fetch a stat for every reply, one mark-as-read per text, copies on hot paths;
added to #226 (props cloned and compared in full), #227 (pictures re-encoded as base64 on every render, held twice), #228.
Checked and fine as they are: Caddy compresses (zstd/gzip) and caches the hashed assets forever; the protocol decoder scans incrementally; the relay forwards bytes without parsing; the keepalive interval.

Review done; what it found is filed in 0.6: - #231 web download: 4.5 MB of wasm, 1.3 MB of it debug info, and no release profile; - #232 local search index: up to ~80 MB in memory; on desktop the whole file is rewritten per post once full; - #233 idle cost: the 250 ms seen-poll, a 30 s clock that redraws whole threads, presence that redraws every dot; - #234 server round trips: cards loaded one by one, previews fetch a stat for every reply, one mark-as-read per text, copies on hot paths; - added to #226 (props cloned and compared in full), #227 (pictures re-encoded as base64 on every render, held twice), #228. Checked and fine as they are: Caddy compresses (zstd/gzip) and caches the hashed assets forever; the protocol decoder scans incrementally; the relay forwards bytes without parsing; the keepalive interval.

littlefox closed this issue

2026-10-21 19:08:42 +00:00

littlefox referenced this issue

2026-10-21 19:17:26 +00:00

"Visa fler" budget counts every thread ever opened #235

littlefox referenced this issue

2026-10-21 19:17:27 +00:00

Inbox reads the stat of every text in the mailbox, again on every login anywhere #237

littlefox referenced this issue

2026-10-21 19:22:20 +00:00

Channel list: slow at login, and redrawn in full for every post read #238

littlefox referenced this issue

2026-10-21 19:22:21 +00:00

Avatars: full-size photos for 32 px, fetched as full views, all redrawn per arrival #239

littlefox referenced this issue

2026-10-21 19:22:21 +00:00

Every new post anywhere is downloaded in full, pictures included #240

littlefox referenced this issue

2026-10-21 19:22:22 +00:00

Service worker keeps every old build forever #241

littlefox referenced this issue

2026-10-21 19:22:22 +00:00

Reading view redraws everything, and every post read reloads the whole thread #226

littlefox referenced this issue

2026-10-21 19:53:56 +00:00

Plan 0.6 in order, 0.7 for threads; D-058, D-059 #244

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littlefox/neokom#230

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