Re: increasing the default WAL segment size

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Simon Riggs <simon(at)2ndquadrant(dot)com>
Cc: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Jim Nasby <Jim(dot)Nasby(at)bluetreble(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Beena Emerson <memissemerson(at)gmail(dot)com>
Subject: Re: increasing the default WAL segment size
Date: 2017-01-04 13:57:53
Message-ID: CA+Tgmobus8YzzRLa8D8vuSMa+++SKg+xMM-51j3+5DdV_mKErw@mail.gmail.com
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On Wed, Jan 4, 2017 at 3:05 AM, Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:
> Strange response. Nothing has been assumed. I asked for tests and you
> provided measurements.

Sure, of zero-filling a file with dd. But I also pointed out that in
a real PostgreSQL cluster, the change could actually *reduce* latency.

> I suggest we fix just the problem as the fastest way forwards.

If you want to do the work, sure.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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