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From: Laurenz Albe <laurenz.albe@cybertec.at>
To: Gunther <raj@gusw.net>
To: pgsql-performance@lists.postgresql.org
Subject: Re: pg_dump 3 times as slow after 8.4 -> 9.5 upgrade
Date: Thu, 07 Dec 2017 18:31:35 +0100
Message-ID: <1512667895.2915.13.camel@cybertec.at> (raw)
In-Reply-To: <fbcba138-d467-440a-53c5-dae03e926170@gusw.net>
References: <8F33D0C7-E12E-4996-990C-3CF0C5ED0437@filmlance.se>
	<0bc6cc72-7d7d-b157-4824-7a6ea2985a60@hipay.com>
	<A456F355-B91C-42CD-AFA1-6572CA2C1546@filmlance.se>
	<fbcba138-d467-440a-53c5-dae03e926170@gusw.net>

Gunther wrote:
> Something is wrong with the dump thing. And no, it's not SSL or whatever,
> I am doing it on a local system with local connections. Version 9.5 something.

That's a lot of useful information.

Try to profile where the time is spent, using "perf" or similar.

Do you connect via the network, TCP localhost or UNIX sockets?
The last option should be the fastest.

Yours,
Laurenz Albe

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