On Thu, Apr 22, 2021 at 10:15 PM Justin Pryzby <pryzby@xxxxxxxxxxxxx> wrote: > Note that the interpretation of this GUC changed in v13. > https://www.postgresql.org/docs/13/release-13.html > |Change the way non-default effective_io_concurrency values affect concurrency (Thomas Munro) > |Previously, this value was adjusted before setting the number of concurrent requests. The value is now used directly. Conversion of old values to new ones can be done using: > |SELECT round(sum(OLDVALUE / n::float)) AS newvalue FROM generate_series(1, OLDVALUE) s(n); > Yeah, I know, thanks. However, I'm still curious about which tools to use to get info about the storage queue/concurrency. Luca