Published on: 2025-05-31 01:47:08
Overview Recently, I revisited Resolving a year-long ClickHouse lock contention post and spoke about it at C++ Russia 2025 conference. I wanted to provide more information about the development process and some technical details that were not covered in the original post. Motivation In 2022 in Tinybird, there was a huge CPU underutilization in one of our clusters during the high load period. It was unclear what was the issue. There were no IO/Network/Memory bottlenecks. In ClickHouse all as
Keywords: context lock mutex shared thread
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