← Lab
stragglerlat
confirmedPython · llama.cppInference & servingJuly 7, 2026
the question
Do long requests punish short ones under continuous batching?
what came out
A straggler taxes short-request latency (1.5x) via slot contention, not head-of-line blocking (shorts still finish first) -- but NOT more than an equal count of short requests: the matched control refutes the intuition. Real llama.cpp, pre-registered, code-reviewed.
method & receipts
- Result: confirmed
- Pre-registered — the prediction was written down and committed before the run.
- Reproducible — one script re-runs the whole thing from scratch.
- Independently reviewed — an adversarial review pass, kept in the repo.
- Machine-readable claims — every reported number, in a checkable file.
- Tested — a correctness/benchmark suite ships alongside the code.
→ read the code and re-run it
github.com/v-code01/stragglerlat