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CCLS doesn't scale well to much higher thread counts #957

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lanza opened this issue Jan 28, 2024 · 0 comments
Open

CCLS doesn't scale well to much higher thread counts #957

lanza opened this issue Jan 28, 2024 · 0 comments

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@lanza
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lanza commented Jan 28, 2024

My work machine is an AMD Epyc 9634 with 166 threads. While indexing an LLVM build with clang and mlir enabled and ~10k items to be indexed, ccls often hovers between 1300% and 4000% CPU usage with index.threads set to either 0 or 166.

Any idea what the bottleneck in CCLS is?
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