Version 9.2 is very old and has a lot of issues related to streaming replication. Additionally, it is already EOL.
Furthermore, max_standby_streaming_delay has no relation with the streaming lag. It's associated with queries conflicting with data. This parameter will not speed up the WAL apply operation. Kindly consider upgrading to a supported version. Regards, Ninad Shah On Fri, 23 Jul 2021 at 15:18, Luca Ferrari <fluca1...@gmail.com> wrote: > On Fri, Jul 16, 2021 at 12:38 AM Lucas <r...@sud0.nz> wrote: > > However, it hasn't changed and the replication lag is still high all the > time. > > > > Since the documentation states that max_standby_streaming_delay > "[...]it is the maximum total time allowed to apply WAL data once it > has been received from the primary server[...]", could it be the > trivial explaination that the master is serving WALs with an high > delay? > > Luca > > >