From: David F. Skoll <dfs@roaringpenguin.com>
To: pgsql-admin@postgresql.org
Cc: John Scalia <jayknowsunix@gmail.com>
Subject: Re: Weird spikes in delay for async streaming replication on 9.1
Date: Thu, 26 Feb 2015 10:44:33 -0500
Message-ID: <20150226104433.1b0df1db@hydrogen.roaringpenguin.com> (raw)
In-Reply-To: <54EF3E6F.60403@gmail.com>
References: <20150214110050.2f032f05@ollie.roaringpenguin.com>
<20150226094428.34531376@hydrogen.roaringpenguin.com>
<54EF3E6F.60403@gmail.com>
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On Thu, 26 Feb 2015 10:40:31 -0500
John Scalia <jayknowsunix@gmail.com> wrote:
> Apologies, David, but as I don't check this list very often, I
> thought you should have received an answer. Have you tried watching
> the transaction with tcpdump or wireshark?
Yes. Haven't observed anything unusual.
> To me this sounds like either a network problem or like you're
> thinking a contention problem.
It is not a network problem; we monitor the link between sites. And it
happens absolutely regularly, like clockwork, when we run our nightly
pg_dump on the master.
> Also, are you running streaming replication? If so, there
> shouldn't be ANY delay as the standby gets the commit before the
> primary. Otherwise, how are you replicating? -- Jay
We are running asynchronous streaming replication.
Regards,
David.
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To: pgsql-admin@postgresql.org
Cc: dfs@roaringpenguin.com, jayknowsunix@gmail.com
Subject: Re: Weird spikes in delay for async streaming replication on 9.1
In-Reply-To: <20150226104433.1b0df1db@hydrogen.roaringpenguin.com>
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