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From: Rui DeSousa <[email protected]>
To: Karthik Yellapragada <[email protected]>
Cc: Pgsql-admin <[email protected]>
Subject: Re: Parallelize WAL Sender and WAL receiver
Date: Thu, 5 Sep 2024 00:33:10 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <CACXtxt-ePN=ZWPRpbYHKQXJt6H1n2X6s_K_4VcuxaPM5sWP4fA@mail.gmail.com>
References: <CACXtxt_ANB20ZWjFQt=BOtCN50g6MvNvQPokv5TwPSwwXchdkw@mail.gmail.com>
	<[email protected]>
	<CACXtxt-ePN=ZWPRpbYHKQXJt6H1n2X6s_K_4VcuxaPM5sWP4fA@mail.gmail.com>



> On Sep 4, 2024, at 11:47 PM, Karthik Yellapragada <[email protected]> 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. 




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