> On Sep 4, 2024, at 11:47 PM, Karthik Yellapragada <karthik.yellapragada@xxxxxxxxx> wrote: > > Appreciate the responses, the network is good.. around 350 MB/s between prinary and secondary, both primary and secondary in the same DC. And it’s ASYC replication.. > > I see the issue when the writes are super heavy , > I am only thinking if we can add more processes that sends / receives the WALs , we can speed up the transfer rate of WALs to the secondary.. > > I understand the Apply can not be parallelized.. Sounds like you have 10GbE between the nodes? Are you sure it’s send rate? If so, I would look at the disk subsystem.