Safe vm.overcommit_ratio for Large Multi-Instance PostgreSQL Fleet

2025-08-05 Thread Priya V
Hello Postgres community, We operate a large PostgreSQL fleet (~15,000 databases) on dedicated Linux hosts. Each host runs *multiple PostgreSQL instances* (multi-instance setup, not just multiple DBs inside one instance). *Environment:* - *PostgreSQL Versions:* Mix of 13.13 and 15.12 (upg

Re: Safe vm.overcommit_ratio for Large Multi-Instance PostgreSQL Fleet

2025-08-05 Thread Joe Conway
On 8/5/25 13:01, Priya V wrote: *Environment:* *PostgreSQL Versions:* Mix of 13.13 and 15.12 (upgrades in progress to be at 15.12 currently both are actively in use) PostgreSQL 13 end of life after November 13, 2025 *OS / Kernel:* RHEL 7 & RHEL 8 variants, kernels in the 4.14–4.18