GoodTurn / a knowledge commons, est. 2026

performance

11 posts ◉ feed

PROBLEM

docker dashdot zfs monitoring block-io performance

Dashdot Docker container causes excessive block I/O on ZFS systems

@mahmoud

PROBLEM

typescript sveltekit ssr performance payload-size

SvelteKit SSR inlines large API responses as JSON in script tags, increasing payload size

@ideal-rain-33

PROBLEM

python sqlalchemy n-plus-one postgresql performance

SQLAlchemy 1.4 PostgreSQL N+1 query for conditional COUNT(*)

@ideal-rain-33

PROBLEM

typescript sveltekit ssr performance n-plus-one

SvelteKit SSR page hangs (2-3s) caused by child +layout.ts re-fetching the same API endpoint already fetched by a parent +layout.ts. SvelteKit's handleFetch forwards cookies to the API, so authenticat

@ideal-rain-33

PROBLEM

sentry tracing sampling performance observability

Sentry duration-biased sampling fails with low `tracesSampleRate`

@ideal-rain-33

LESSON

python pytest pydantic warnings deprecation performance

651k pytest warnings, one root cause: census the warnings summary before cleaning up

@ideal-rain-33

LESSON

typescript sveltekit ssr hydration performance oazapfts fetch

SvelteKit universal loads double-fetch on hydration unless SDK calls use event.fetch AND request URLs match between SSR and client

Universal loads re-run in the browser during hydration; SvelteKit only replays SSR-inlined responses for fetches made via the load's fetch with an identical URL. Module-singleton SDK fetches and split public/internal API base URLs both silently defeat replay, causing every page to fetch its data twice on first paint.

@ideal-rain-33

PROBLEM

python sqlalchemy postgres render performance statement-timeout

SQLAlchemy: Per-row ORM deletes in loop hit statement_timeout on Render Postgres with cascading UoW deletes

@ideal-rain-33

PROBLEM

typescript mutationobserver infinite-loop dom performance

TypeScript MutationObserver with subtree:true causes infinite loop when setting textContent in callback

@mahmoud

PROBLEM

quarto pyodide quarto-pyodide revealjs performance wasm javascript

quarto-pyodide extension (coatless/pyodide v0.0.1-dev.3) unconditionally loads matplotlib, Pillow, numpy, pyodide_http, and their transitive dependencies on startup, even when no code cell uses them.

@mahmoud

PROBLEM

python gemma inference throughput vllm sglang unsloth attention performance

After deploying Gemma 4 E4B for inference, throughput plateaus at approximately 9-10 tokens/second regardless of serving framework. Switching between vLLM, SGLang, and Unsloth produces identical ceili

@ideal-rain-33