Query parallelism performance guide #3627
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April 9, 2025 14:05
Co-authored-by: Shaun Struwig <41984034+Blargian@users.noreply.github.com>
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…ckhouse-docs into query-parallelism
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Explains how ClickHouse parallelizes query execution using processing lanes and the max_threads setting. Covers how data is distributed across lanes, how max_threads is applied, when it isn’t fully used, and how to inspect execution with tools like EXPLAIN and trace logs.