From:
Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To:
Simon Riggs <simon(at)2ndQuadrant(dot)com>
Cc:
Robert Haas <robertmhaas(at)gmail(dot)com>, Erik Rijkers <er(at)xs4all(dot)nl>,
Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>,
pgsql-hackers(at)postgresql(dot)org
Subject:
Re: testing HS/SR - 1 vs 2 performance
Date:
2010-04-27 21:24:48
Message-ID:
24325.1272403488@sss.pgh.pa.us (view raw or flat )
Thread:
2010-04-12 14:00:51 from "Erik Rijkers" <er(at)xs4all(dot)nl>
2010-04-13 05:44:19 from Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
2010-04-13 18:09:46 from Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
2010-04-14 08:24:45 from Dimitri Fontaine <dfontaine(at)hi-media(dot)com>
2010-04-14 12:08:13 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-16 08:29:54 from Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
2010-04-16 09:10:01 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-16 11:47:42 from Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
2010-04-16 12:00:22 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-16 21:00:09 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-16 14:39:52 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-16 14:52:49 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-16 15:10:45 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-17 14:16:55 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-17 15:13:46 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-17 15:25:46 from Robert Haas <robertmhaas(at)gmail(dot)com>
2010-04-17 19:20:00 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-17 19:45:47 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-17 20:14:33 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-17 20:48:21 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-17 22:46:06 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-17 22:52:26 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-18 07:24:36 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-18 11:01:05 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-18 20:16:11 from David Fetter <david(at)fetter(dot)org>
2010-04-18 20:22:21 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-18 20:23:21 from David Fetter <david(at)fetter(dot)org>
2010-04-20 11:50:23 from Robert Haas <robertmhaas(at)gmail(dot)com>
2010-04-21 03:09:43 from Mark Kirkwood <mark(dot)kirkwood(at)catalyst(dot)net(dot)nz>
2010-04-21 03:46:06 from Robert Haas <robertmhaas(at)gmail(dot)com>
2010-04-21 06:39:16 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-21 12:20:32 from Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
2010-04-21 13:31:28 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-21 14:11:00 from Robert Haas <robertmhaas(at)gmail(dot)com>
2010-04-21 12:27:12 from Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
2010-04-21 13:37:46 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-21 13:51:00 from Robert Haas <robertmhaas(at)gmail(dot)com>
2010-04-21 14:12:43 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-21 14:22:50 from marcin mank <marcin(dot)mank(at)gmail(dot)com>
2010-04-21 14:49:06 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-21 15:13:29 from Florian Pflug <fgp(at)phlo(dot)org>
2010-04-21 14:53:05 from Robert Haas <robertmhaas(at)gmail(dot)com>
2010-04-22 05:57:43 from Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
2010-04-22 06:56:39 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-22 18:39:14 from "Erik Rijkers" <er(at)xs4all(dot)nl>
2010-04-22 21:41:29 from Greg Smith <greg(at)2ndquadrant(dot)com>
2010-04-22 21:54:55 from Mark Kirkwood <mark(dot)kirkwood(at)catalyst(dot)net(dot)nz>
2010-04-22 22:32:44 from "Erik Rijkers" <er(at)xs4all(dot)nl>
2010-04-22 22:45:47 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-23 15:14:41 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-23 15:32:19 from Robert Haas <robertmhaas(at)gmail(dot)com>
2010-04-23 22:39:48 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-23 23:07:15 from Robert Haas <robertmhaas(at)gmail(dot)com>
2010-04-24 09:17:44 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-25 10:53:04 from Robert Haas <robertmhaas(at)gmail(dot)com>
2010-04-25 12:50:00 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-25 15:37:04 from Robert Haas <robertmhaas(at)gmail(dot)com>
2010-04-25 15:50:17 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-25 16:46:38 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-25 16:51:58 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-25 17:00:58 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-25 17:33:24 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-25 17:45:02 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-25 17:51:00 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-27 02:35:22 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-27 02:37:18 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-27 17:52:50 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-27 18:13:33 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-27 18:53:16 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-27 19:29:13 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-27 20:18:53 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-27 20:44:32 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-27 21:24:48 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-27 21:45:53 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-27 22:08:29 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-27 22:45:54 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-28 00:13:09 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-28 09:37:38 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-23 23:17:22 from "Erik Rijkers" <er(at)xs4all(dot)nl>
2010-04-25 18:25:16 from "Erik Rijkers" <er(at)xs4all(dot)nl>
2010-04-25 18:55:02 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-25 21:52:19 from "Erik Rijkers" <er(at)xs4all(dot)nl>
2010-04-26 07:43:09 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-26 15:04:09 from "Erik Rijkers" <er(at)xs4all(dot)nl>
2010-04-25 19:07:28 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-05-04 16:10:53 from "Erik Rijkers" <er(at)xs4all(dot)nl>
2010-05-04 16:19:47 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-05-04 16:33:26 from "Erik Rijkers" <er(at)xs4all(dot)nl>
2010-05-04 18:26:58 from Greg Smith <greg(at)2ndquadrant(dot)com>
2010-05-04 19:40:12 from "Erik Rijkers" <er(at)xs4all(dot)nl>
2010-05-07 12:04:02 from Greg Smith <greg(at)2ndquadrant(dot)com>
2010-05-04 19:34:53 from Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc>
2010-05-04 20:48:07 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-26 06:52:51 from Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
2010-04-26 15:01:41 from "Erik Rijkers" <er(at)xs4all(dot)nl>
2010-04-23 00:44:11 from Mark Kirkwood <mark(dot)kirkwood(at)catalyst(dot)net(dot)nz>
2010-04-25 16:43:57 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-25 16:54:59 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-25 23:18:48 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-26 07:21:35 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2010-04-23 17:16:09 from Marko Kreen <markokr(at)gmail(dot)com>
2010-04-23 17:38:48 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2010-04-23 18:22:55 from Marko Kreen <markokr(at)gmail(dot)com>
Lists:
pgsql-hackers
Isn't the snapshotOldestActiveXid filter in
RecordKnownAssignedTransactionIds completely wrong/useless/bogus?
AFAICS, snapshotOldestActiveXid is only set once at the start of
recovery. This means it will soon be too old to provide any useful
filtering. But what's far worse is that the XID space will eventually
wrap around, and that test will start filtering *everything*.
I think we should just lose that test, as well as the variable.
regards, tom lane
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