Mistral AI·· 2026-01-22SelectedAI score62
Heaps do lie: debugging a memory leak in vLLM.
Heaps do lie: debugging a memory leak in vLLM.
AI introduction
The Mistral AI team investigated a memory leak of roughly 400 MB per minute in vLLM when running Mistral Medium 3.1 with graph compilation enabled in P/D disaggregated deployments.
Why it matters
The article documents the full process of localizing the leak layer by layer from pmap and BPFtrace to GDB, which can be applied to similar kernel-level debugging of inference services.
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Source: Mistral AI · mistral.ai