xserv_vs_llama.py runs each server one at a time on the same GPUs (drains VRAM
between), streams identical prompts through /v1/chat/completions, and reports
median TTFT/TPOT/throughput. Counts llama's reasoning_content as real decode
tokens so the gpt-oss CoT is measured fairly.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>