August 2026
Running a local 27B coding agent for 811 minutes: where the time actually goes
A local Qwen3.8-27B on one RTX 4090 built a Rust/Svelte/Tauri Tetris at 35 tokens a second; GPT-5.6 reviewed it read-only; I measured seven rounds. Good code, completion reports that could not be trusted, and a third of the clock spent on compaction.