>As for what's causing the gains, there have been a lot of low-level optimizations and enhancements to various Linux kernel data structures and the like this cycle. Offhand that's perhaps the possible explanation but will be interesting to test on more hardware and other configurations as time allows. In any case, with every PostgreSQL read/write workload tested there were decisive performance gains for Linux 7.0 on this AMD EPYC 9755 server.
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