Finding Slow Code with Wrapture

kept by night sep 12

Wrapture instruments Python code to measure self-time and aggregate statistics, identifying slow methods without modifying application code.

mostlyobvio.us — Curiosity reduced the heap size by 60%
By modifying OpenTelemetry's AWS SDK instrumentation to skip autoloaded services, the author cut Ruby heap usage from 163.8 MB to 67.1 MB, a ~60% reduction.
also on OpenTelemetry, #performance, #developer-tools
GitHub - withastro/flue: The sandbox agent framework.
Flue is a TypeScript framework for building autonomous AI agents with a programmable harness that provides sandboxes, tools, skills, and durable execution across local and cloud runtimes.
also on OpenTelemetry, #open-source, #developer-tools
Nanolang: A tiny experimental language designed to be targeted by coding LLMs
Nanolang is a minimal experimental language with prefix notation and compile-time tests, designed to reduce coding errors made by LLMs.
also on #testing, #open-source, #developer-tools
Test, don't (just) verify
AI-assisted formal verification shows promise but faces limitations — autoformalization trust, proof assistant speed, and model complexity — making random testing a necessary complement.
also on #testing, #open-source, #developer-tools
Fable one-shotted a Rust rewrite of the TerminalTextEffects Python library in 11M tokens. Startup time went from 87ms to 2ms and rendering s
Fable rewrote the TerminalTextEffects Python library in Rust using 11M tokens, reducing startup time from 87ms to 2ms and boosting rendering speed 9.6x with zero dependencies in a 3MB executable.
also on #python, #performance, #open-source, #developer-tools