On Sat, Aug 21, 2021 at 02:19:50PM -0500, Justin Pryzby wrote: > As I recall, you're running postgres under a windows VM - I'm not sure if > that's relevant. I tried under a couple hyperv VMs but could not reproduce the issue (only an ~8x difference "with exceptions"). Which hypervisor are you using ? I don't know if any of it matters, but would you also send: SELECT version(); SELECT * FROM pg_config(); And maybe the CPU info ? -- Justin