Postgres, Linux, and the “we didn’t change anything” performance drop

There’s an interesting (and slightly worrying) shift happening right now in the Postgres + Linux world. A recent Linux kernel change (7.x line) is showing significant performance regressions for PostgreSQL workloads — in some cases halving throughput or turning 50ms queries into 500ms ones overnight. (hostingartisan) And here’s the catch:nothing in Postgres changed. What’s Continue Reading

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