fix: Avoid thread starvation on many concurrent requests by making use of asyncio to lock llama_proxy context #1798
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Supersedes previous MR #1795
Previous implementation creates and locks threads when acquiring llama_proxy, this can cause thread starvation on many parallel requests.
This also prevents call to
await run_in_threadpool(llama.create_chat_completion, **kwargs)proceeding as all worker threads are stuck awaiting lock so no progress may be made.This MR adapts acquiring of llama_proxy to async pattern taking advantage of asyncio mechanisms. ExitStack is replaced with AsyncExitStack and improper closing of the ExitStack is addressed