From:
Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To:
Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>,
Euler Taveira de Oliveira <euler(at)timbira(dot)com>,
Robert Haas <robertmhaas(at)gmail(dot)com>,
Pgsql Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject:
Re: xlog location arithmetic
Date:
2012-03-09 14:55:09
Message-ID:
28804.1331304909@sss.pgh.pa.us (view raw or flat )
Thread:
2011-12-06 04:19:49 from Euler Taveira de Oliveira <euler(at)timbira(dot)com>
2011-12-06 10:14:02 from Magnus Hagander <magnus(at)hagander(dot)net>
2011-12-06 16:11:32 from Robert Haas <robertmhaas(at)gmail(dot)com>
2011-12-06 18:00:51 from Euler Taveira de Oliveira <euler(at)timbira(dot)com>
2011-12-06 18:06:36 from Robert Haas <robertmhaas(at)gmail(dot)com>
2011-12-13 17:48:22 from Jim Nasby <jim(at)nasby(dot)net>
2011-12-13 20:37:10 from Robert Haas <robertmhaas(at)gmail(dot)com>
2011-12-20 10:27:41 from Magnus Hagander <magnus(at)hagander(dot)net>
2011-12-20 13:08:50 from Euler Taveira de Oliveira <euler(at)timbira(dot)com>
2011-12-23 11:54:22 from Magnus Hagander <magnus(at)hagander(dot)net>
2011-12-23 15:05:54 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2011-12-23 15:13:41 from Robert Haas <robertmhaas(at)gmail(dot)com>
2011-12-23 15:18:21 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2011-12-23 15:32:29 from Robert Haas <robertmhaas(at)gmail(dot)com>
2011-12-23 15:59:35 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2011-12-23 16:15:07 from Robert Haas <robertmhaas(at)gmail(dot)com>
2011-12-23 15:13:42 from Andrew Dunstan <andrew(at)dunslane(dot)net>
2012-01-21 16:13:41 from Euler Taveira de Oliveira <euler(at)timbira(dot)com>
2012-01-26 09:19:28 from Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
2012-02-07 17:29:16 from Euler Taveira de Oliveira <euler(at)timbira(dot)com>
2012-02-08 12:35:15 from Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
2012-02-09 22:00:30 from Euler Taveira de Oliveira <euler(at)timbira(dot)com>
2012-02-10 08:32:46 from Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
2012-02-25 12:23:25 from Magnus Hagander <magnus(at)hagander(dot)net>
2012-02-25 23:53:19 from Euler Taveira de Oliveira <euler(at)timbira(dot)com>
2012-02-28 06:21:12 from Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
2012-03-04 11:26:56 from Magnus Hagander <magnus(at)hagander(dot)net>
2012-03-04 11:26:36 from Magnus Hagander <magnus(at)hagander(dot)net>
2012-03-09 12:11:13 from Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
2012-03-09 14:37:35 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2012-03-09 14:44:08 from Robert Haas <robertmhaas(at)gmail(dot)com>
2012-03-09 15:00:55 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2012-03-09 14:55:09 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2012-03-09 15:31:26 from Robert Haas <robertmhaas(at)gmail(dot)com>
2012-03-09 15:37:42 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2012-03-09 17:13:26 from Magnus Hagander <magnus(at)hagander(dot)net>
2012-03-09 19:23:28 from Peter Eisentraut <peter_e(at)gmx(dot)net>
2012-03-09 19:26:44 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2012-03-09 19:34:04 from Robert Haas <robertmhaas(at)gmail(dot)com>
2012-03-09 19:39:26 from Robert Haas <robertmhaas(at)gmail(dot)com>
2012-03-09 20:04:23 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2012-03-09 20:12:20 from Robert Haas <robertmhaas(at)gmail(dot)com>
2012-03-13 00:47:24 from Bruce Momjian <bruce(at)momjian(dot)us>
2012-03-13 02:51:50 from Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
2012-03-13 03:03:42 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2012-03-13 03:36:45 from Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
2012-03-09 19:37:43 from "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov>
2012-03-09 17:14:00 from Magnus Hagander <magnus(at)hagander(dot)net>
2012-03-09 17:18:24 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2012-03-09 17:38:28 from Magnus Hagander <magnus(at)hagander(dot)net>
2012-03-09 18:23:38 from Robert Haas <robertmhaas(at)gmail(dot)com>
2012-03-13 02:34:10 from Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
2012-04-13 20:30:16 from Robert Haas <robertmhaas(at)gmail(dot)com>
2012-04-14 11:25:42 from Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
2012-04-14 12:08:12 from Robert Haas <robertmhaas(at)gmail(dot)com>
2012-01-17 14:46:07 from Peter Geoghegan <peter(at)2ndquadrant(dot)com>
2011-12-06 17:39:21 from Euler Taveira de Oliveira <euler(at)timbira(dot)com>
2012-01-14 14:06:34 from Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
2012-01-14 14:12:21 from Euler Taveira de Oliveira <euler(at)timbira(dot)com>
2012-01-15 01:18:31 from Greg Smith <greg(at)2ndQuadrant(dot)com>
2012-01-15 03:49:00 from Gurjeet Singh <singh(dot)gurjeet(at)gmail(dot)com>
2012-01-15 04:44:08 from Greg Smith <greg(at)2ndQuadrant(dot)com>
2012-01-15 08:17:54 from Magnus Hagander <magnus(at)hagander(dot)net>
2012-01-15 08:37:30 from Greg Smith <greg(at)2ndQuadrant(dot)com>
2012-01-15 08:45:25 from Magnus Hagander <magnus(at)hagander(dot)net>
2012-01-16 17:57:25 from Robert Haas <robertmhaas(at)gmail(dot)com>
2012-01-16 17:58:29 from Magnus Hagander <magnus(at)hagander(dot)net>
2012-01-16 20:48:41 from Josh Berkus <josh(at)agliodbs(dot)com>
2012-01-16 21:10:23 from Alvaro Herrera <alvherre(at)commandprompt(dot)com>
2012-01-16 21:25:50 from Josh Berkus <josh(at)agliodbs(dot)com>
2012-01-16 21:37:59 from Jeff Janes <jeff(dot)janes(at)gmail(dot)com>
2012-01-16 22:08:09 from Alvaro Herrera <alvherre(at)commandprompt(dot)com>
2012-01-16 22:25:50 from Greg Smith <greg(at)2ndQuadrant(dot)com>
2012-01-16 22:40:38 from Alvaro Herrera <alvherre(at)commandprompt(dot)com>
2012-01-17 15:33:27 from Matteo Beccati <php(at)beccati(dot)com>
2012-01-17 16:50:41 from Alvaro Herrera <alvherre(at)commandprompt(dot)com>
2012-01-17 17:10:11 from Matteo Beccati <php(at)beccati(dot)com>
2012-01-17 17:22:12 from Matteo Beccati <php(at)beccati(dot)com>
2012-01-17 16:50:20 from Andrew Dunstan <andrew(at)dunslane(dot)net>
2012-01-17 17:24:05 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2012-01-17 20:17:05 from Alvaro Herrera <alvherre(at)commandprompt(dot)com>
2012-01-18 01:23:13 from Alvaro Herrera <alvherre(at)commandprompt(dot)com>
2012-01-18 02:46:36 from Alvaro Herrera <alvherre(at)commandprompt(dot)com>
2012-01-22 18:53:39 from Dimitri Fontaine <dimitri(at)2ndQuadrant(dot)fr>
2012-01-16 23:23:33 from Andrew Dunstan <andrew(at)dunslane(dot)net>
2012-01-17 16:50:26 from Peter Eisentraut <peter_e(at)gmx(dot)net>
2012-01-17 18:19:13 from Greg Smith <greg(at)2ndQuadrant(dot)com>
2012-01-19 17:59:35 from Alex Shulgin <ash(at)commandprompt(dot)com>
2012-01-22 18:54:30 from Dimitri Fontaine <dimitri(at)2ndQuadrant(dot)fr>
2012-01-19 18:14:02 from Andrew Dunstan <andrew(at)dunslane(dot)net>
2012-01-19 18:41:54 from Alex Shulgin <ash(at)commandprompt(dot)com>
2012-01-19 19:04:07 from Alvaro Herrera <alvherre(at)commandprompt(dot)com>
2012-01-19 19:10:00 from Andrew Dunstan <andrew(at)dunslane(dot)net>
Lists:
pgsql-hackers
I wrote:
> Fujii Masao <masao(dot)fujii(at)gmail(dot)com> writes:
>> Euler proposed one more patch upthread, which replaces pg_size_pretty(bigint)
>> with pg_size_pretty(numeric) so that pg_size_pretty(pg_xlog_location_diff())
>> succeeds. It's also worth committing this patch?
> Why would it be useful to use pg_size_pretty on xlog locations?
> -1 because of the large expense of bigint->numeric->whatever conversion
> that would be added to existing uses.
Actually ... now that I look at it, isn't it completely bogus to be
using numeric for the result of pg_xlog_location_diff? There's no way
for the difference of two xlog locations to be anywhere near as wide as
64 bits. That'd only be possible if XLogFileSize exceeded 1GB, which we
don't let it get anywhere near.
regards, tom lane
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