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help / color / mirror / Atom feedFrom: Ramakrishna m <[email protected]>
To: [email protected]
Cc: [email protected]
Subject: Re: Logical Replication Delay on Remote Server
Date: Wed, 24 Apr 2024 08:10:20 +0530
Message-ID: <CAG-eXH+PhDMavx3-XUyR=G8MyMDPdkqWsKkC5+sCrDPiUhJ8FA@mail.gmail.com> (raw)
In-Reply-To: <CAG-eXHLx3JGO+pGVBRDPvpUamc6Jbutj2egH7Y8+XTgZzy0V7A@mail.gmail.com>
References: <CAG-eXHLx3JGO+pGVBRDPvpUamc6Jbutj2egH7Y8+XTgZzy0V7A@mail.gmail.com>
Hi Team,
adding one more point here,
5. Pg_stat_replication_slot total_txn count reduces when lag occurs .Does
decoding stop in case of logical replication delay?
On Tue, 23 Apr 2024 at 22:55, Ramakrishna m <[email protected]> wrote:
> Hi Team,
>
> I am facing replication lag in postgres16 at times,not able to find the
> reason.
>
> Please find the configuration:
> 1) Two replication slots for two servers (1 is the same data center,
> another remote)
> 2) weekly once/twice facing lag(around 2GB for 1k TPS environment) in the
> remote replication slot and another same data center server slot with 0
> lag.
>
> My observation:
>
> 1) Noticed pg_stat_replication_slot total_txn reduced from 1k to 5 or 6
> but other slot is same with 1k TPS
> 2)And noticed lag for remote slot but fine with same data center
> 3) Most importantly I have plenty of Bandwidth available in n/w ,2GB is
> still freely available out of 4GB network.
> 4)No IO issues on servers
> I am not able to prove if this is due to Network .Can you help me how to
> proceed on this?
> At Least how the logical decoding total_txn is counting the view
> pg_stat_replication_slot?
>
> --
> Thanks & Regards,
> Ram.
>
--
Thanks & Regards,
Ram.
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Subject: Re: Logical Replication Delay on Remote Server
In-Reply-To: <CAG-eXH+PhDMavx3-XUyR=G8MyMDPdkqWsKkC5+sCrDPiUhJ8FA@mail.gmail.com>
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