From: Tomas Vondra <tomas.vondra@2ndquadrant.com>
To: Peter Geoghegan <pg@bowt.ie>
To: Robert Haas <robertmhaas@gmail.com>
Cc: David Rowley <david.rowley@2ndquadrant.com>
Cc: Joe Conway <mail@joeconway.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: Should we increase the default vacuum_cost_limit?
Date: Tue, 5 Mar 2019 13:53:07 +0100
Message-ID: <c5a2de9d-ded2-5876-5420-d1f6190ff352@2ndquadrant.com> (raw)
In-Reply-To: <CAH2-WzkauoNo3TmWjWwTHRZPVaw1=VB51E8W3BRm5Zx4AVEByw@mail.gmail.com>
References: <CAKJS1f_YbXC2qTMPyCbmsPiKvZYwpuQNQMohiRXLj1r=8_rYvw@mail.gmail.com>
<CAH2-Wz=WQ9ju6sjPF7RcW0g6NPXAenZeC5qVme6uj+eMRw5q2g@mail.gmail.com>
<241b80ab-7af0-c606-7b2c-b0a5d6be696a@joeconway.com>
<CAKJS1f_5xofbg0K16MkhQPeCXV6oGCuD2SVcV76OW7ydFDHDkw@mail.gmail.com>
<CA+Tgmoas1AbDQPAoE1yE9U7d56j06swZvickKKfoYjUoM3t6UQ@mail.gmail.com>
<CAH2-WzkauoNo3TmWjWwTHRZPVaw1=VB51E8W3BRm5Zx4AVEByw@mail.gmail.com>
On 3/5/19 1:14 AM, Peter Geoghegan wrote:
> On Mon, Feb 25, 2019 at 8:48 AM Robert Haas <robertmhaas@gmail.com> wrote:
>> +1 for raising the default substantially. In my experience, and it
>> seems others are in a similar place, nobody ever gets into trouble
>> because the default is too high, but sometimes people get in trouble
>> because the default is too low.
>
> Does anyone want to make an argument against the idea of raising the
> default? They should speak up now.
>
I don't know.
On the one hand I don't feel very strongly about this change, and I have
no intention to block it (because in most cases I do actually increase
the value anyway). I wonder if those with small systems will be happy
about it, though.
But on the other hand it feels a bit weird that we increase this one
value and leave all the other (also very conservative) defaults alone.
regards
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-hackers@postgresql.org
Cc: tomas.vondra@2ndquadrant.com, pg@bowt.ie, robertmhaas@gmail.com, david.rowley@2ndquadrant.com, mail@joeconway.com, pgsql-hackers@lists.postgresql.org
Subject: Re: Should we increase the default vacuum_cost_limit?
In-Reply-To: <c5a2de9d-ded2-5876-5420-d1f6190ff352@2ndquadrant.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox