PREEMPT_NONE Is Dead; Your Postgres Probably Doesn’t Care
Summary
PostgreSQL performance regression on Linux 7.0 is traced to a spinlock and minor page faults within 4KB pages, amplified by large shared_buffers and high parallelism. The article argues the regression is a benchmark artifact and provides practical remediation steps around enabling huge_pages, upgrading the kernel, and configuring containers or cloud offerings accordingly.