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188 discussions - 1,645 posts

  • I've been thinnking how to improve autovacuum so that we can convince more people that it can be enabled by default. Here are my thoughts. There are two areas of improvements: 1. scheduling, and 2. ...
    Alvaro HerreraAlvaro Herrera
    Jan 14, 2007 at 1:18 pm
    Jan 26, 2007 at 4:39 am
  • We (Oleg and me) are glad to present tsearch in core of pgsql patch. In basic, layout, functions, methods, types etc are the same as in current tsearch2 with a lot of improvements: - pg_ts_* tables ...
    Teodor SigaevTeodor Sigaev
    Jan 24, 2007 at 4:45 pm
    Feb 23, 2007 at 10:15 am
  • For a future multimaster replication system, I will need a couple of features in the PostgreSQL server itself. I will submit separate proposals per feature so that discussions can be kept focused on ...
    Jan WieckJan Wieck
    Jan 25, 2007 at 11:16 pm
    Feb 21, 2007 at 4:26 pm
  • Or so... :) Thought I would do a poll of what is happening in the world for 8.3. I have: Alvaro Herrera: Autovacuum improvements (maintenance window etc..) Gavin Sherry: Bitmap Indexes (on disk), ...
    Joshua D. DrakeJoshua D. Drake
    Jan 22, 2007 at 10:13 pm
    Feb 11, 2007 at 1:14 am
  • Hello, With all the recent discussion on contrib modules etc.. I would like to offer the following suggestion. I am willing to do a good portion of the work myself and I can get it done before ...
    Joshua D. DrakeJoshua D. Drake
    Jan 27, 2007 at 4:56 pm
    Feb 20, 2007 at 8:56 pm
  • I will start processing the patches held for 8.3 this week or next, now that the holiday break is over: http://momjian.postgresql.org/cgi-bin/pgpatches_hold -- Bruce Momjian bruce@momjian.us ...
    Bruce MomjianBruce Momjian
    Jan 2, 2007 at 12:04 am
    May 16, 2007 at 4:24 pm
  • Yeah, I think then there's no question that the bgwriter is trying to fsync something that's been deleted but isn't yet closed by every process. We have things set up so that that's not a really ...
    Tom LaneTom Lane
    Jan 11, 2007 at 8:14 pm
    Jan 16, 2007 at 4:22 pm
  • Surely not. Otherwise even the "on" setting is not really a defense. regards, tom lane
    Tom LaneTom Lane
    Jan 4, 2007 at 3:01 pm
    Jan 12, 2007 at 10:10 am
  • OSDL had a tool called PLM with a primary goal to test patches against the Linux kernel. It applied them and built them on multiple platforms. It's a pretty simple idea and here are some links to ...
    MarkwkmMarkwkm
    Jan 4, 2007 at 7:38 pm
    Jan 18, 2007 at 2:22 pm
  • In pgAdmin we use pg_dump's -f option to write backup files. The IO streams are redirected to display status and errors etc. in the GUI. In order to enhance the interface to allow backup of entire ...
    Dave PageDave Page
    Jan 5, 2007 at 5:26 pm
    Jan 23, 2007 at 12:36 am
  • Hi, I've just run into a race condition with creating a database and connecting to it immediately afterwards. I'm getting a "database %s not found" error just after the first flatfiles check in ...
    Markus SchiltknechtMarkus Schiltknecht
    Jan 3, 2007 at 3:50 pm
    Jan 11, 2007 at 4:48 am
  • I've been looking at the way we do vacuums. The fundamental performance issue is that a vacuum generates nheapblocks+nindexblocks+ndirtyblocks I/Os. Vacuum cost delay helps to spread the cost like ...
    Heikki LinnakangasHeikki Linnakangas
    Jan 22, 2007 at 2:52 pm
    Jan 27, 2007 at 2:30 am
  • I've never really been very happy with the decision early on in the development of nested transactions to use savepoints in the way they were implemented in the command structure. Savepoints are ...
    Merlin MoncureMerlin Moncure
    Jan 19, 2007 at 8:12 pm
    Jan 22, 2007 at 7:19 pm
  • Well, we are NOT paying a stat() call on every single file close, whether Simon wants it or not. PG_TRACE1 doesn't even do anything on non-Solaris platforms, for pete's sake. Perhaps it would be ...
    Tom LaneTom Lane
    Jan 2, 2007 at 11:20 pm
    Jan 12, 2007 at 6:00 pm
  • So I've been working on the scheme I suggested a few days ago of representing "equivalence classes" of variables explicitly, and avoiding the current ad-hocery of generating and then removing ...
    Tom LaneTom Lane
    Jan 15, 2007 at 4:15 pm
    Jan 29, 2007 at 2:51 am
  • I don't think it belongs in COPY. What would make more sense is another item under the "populating a database" performance tips, suggesting that wrapping the restore into a single transaction is a ...
    Tom LaneTom Lane
    Jan 6, 2007 at 5:41 pm
    Jan 10, 2007 at 6:16 pm
  • Recenly, I've been researching and putting together a proposal for window functions. I have not finished this but when I do, I will post it. A nice list of examples can be found here[1]. Rather than ...
    Gavin SherryGavin Sherry
    Jan 19, 2007 at 3:46 am
    Jan 23, 2007 at 10:53 am
  • this commit broke the buildfarm(ECPG-checks): http://www.pgbuildfarm.org/cgi-bin/show_status.pl Stefan
    Stefan KaltenbrunnerStefan Kaltenbrunner
    Jan 5, 2007 at 10:21 pm
    Jan 12, 2007 at 9:00 pm
  • Discussion "tsearch in core patch, for inclusion" shows (http://archives.postgresql.org/pgsql-hackers/2007-01/msg01165.php and following ...
    Nikolay SamokhvalovNikolay Samokhvalov
    Jan 25, 2007 at 2:52 pm
    Jan 25, 2007 at 6:57 pm
  • This is just useless noise. If it could tell the difference between an up-to-date index and a not-up-to-date one, there might be some value to it ... but as-is I think it's just getting in the user's ...
    Tom LaneTom Lane
    Jan 7, 2007 at 4:39 am
    Jan 10, 2007 at 1:58 am
  • The experience with Slony-I has shown that a) different behavior of triggers and rules on a transactions origin and a replica is essential; b) mucking around with the system catalog to achieve this ...
    Jan WieckJan Wieck
    Jan 25, 2007 at 11:33 pm
    Feb 21, 2007 at 4:10 pm
  • Granted this one has a few open ends so far and I'd like to receive some constructive input on how to actually implement it. The idea is to clone an existing serializable transactions snapshot ...
    Jan WieckJan Wieck
    Jan 26, 2007 at 3:19 am
    Feb 2, 2007 at 4:43 pm
  • I am thinking that maintaining fragmented free space within a heap page might be a good idea. It would help us to reuse the free space ASAP without waiting for a vacuum run on the page. This in turn ...
    Pavan DeolaseePavan Deolasee
    Jan 23, 2007 at 8:18 am
    Jan 24, 2007 at 2:48 pm
  • [ Sorry if this is a duplicate -- resending since it hasn't made it to the list after 1 1/2 hour, possibly due to large attachment (?); here's a URL instead: ...
    Joe ConwayJoe Conway
    Jan 25, 2007 at 2:41 pm
    Jan 31, 2007 at 10:47 am
  • We need to decide on how to handle encoding information embedded in xml data that is passed through the client/server encoding conversion. Here is an example: Client encoding is A, server encoding is ...
    Peter EisentrautPeter Eisentraut
    Jan 14, 2007 at 10:39 pm
    Jan 16, 2007 at 6:14 pm
  • this seems to require an alternative regression output file on windows: http://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=snake&dt=2007-01-17%2006:30:00 ...
    Stefan KaltenbrunnerStefan Kaltenbrunner
    Jan 17, 2007 at 7:52 am
    Jan 20, 2007 at 6:12 pm
  • I have looked over this patch, and it completes part of this TODO item: o Add SET PERFORMANCE_TIPS option to suggest INDEX, VACUUM, VACUUM ANALYZE, and CLUSTER Here is the foundation of it: For an ...
    Bruce MomjianBruce Momjian
    Jan 6, 2007 at 9:08 pm
    Apr 13, 2007 at 9:14 pm
  • This patch has broken a majority of the buildfarm. regards, tom lane
    Tom LaneTom Lane
    Jan 25, 2007 at 6:52 am
    Apr 2, 2007 at 9:11 pm
  • Folks, I would like to build pg on VC2005. How do I use pthreads that is mentioned in the README file. Do I need the DLL? Sources? LIB? Where do I install or copy them.. Regards, Gevik
    Gevik BabakhaniGevik Babakhani
    Jan 26, 2007 at 8:37 pm
    Feb 5, 2007 at 6:11 pm
  • The author of this bug was good enough to send me a copy, since I don't normally read the -bugs list. It can now be found at http://archives.postgresql.org/pgsql-bugs/2007-01/msg00111.php . I dug ...
    Andrew DunstanAndrew Dunstan
    Jan 25, 2007 at 7:23 pm
    Jan 30, 2007 at 4:03 am
  • I'm looking into recursive queries and what it would take to support them in Postgres. Is anyone else looking at this already? Aside from the Oracle-ish syntax were there other objections to the ...
    Gregory StarkGregory Stark
    Jan 24, 2007 at 5:30 pm
    Jan 26, 2007 at 11:13 am
  • Greetings, * Stephen Frost (sfrost@snowman.net) wrote: Following up on my reply to Joshua, what I'd like to propose is, for comments and suggestions: ALTER SCHEMA name [ [ WITH ] [ DEFAULT ] option [ ...
    Stephen FrostStephen Frost
    Jan 23, 2007 at 2:45 am
    Jan 24, 2007 at 7:11 pm
  • I just had a thought about fixing those Windows "permission denied" problems. The case that we believe we understand is where the bgwriter is trying to execute a previously-logged fsync request ...
    Tom LaneTom Lane
    Jan 12, 2007 at 6:40 pm
    Jan 18, 2007 at 2:10 am
  • Odd, because the 8.1 code looks about the same, and it is perfectly obvious in hindsight that its runtime is about O(N^2) in the number of relations :-(. At least that'd be the case if the stats ...
    Tom LaneTom Lane
    Jan 11, 2007 at 7:45 pm
    Jan 17, 2007 at 4:56 pm
  • one of my new buildfarm boxes (an Debian/Etch based ARM box) is sometimes failing to stop the database during the regression tests: ...
    Stefan KaltenbrunnerStefan Kaltenbrunner
    Jan 8, 2007 at 7:39 pm
    Jan 29, 2007 at 7:14 pm
  • Hm, I had hoped that the DB2/ANSI syntax would only require making "WITH" a fully reserved word, and not the other tokens it uses. Certainly for non-recursive queries that's the case as the only ...
    Gregory StarkGregory Stark
    Jan 26, 2007 at 5:19 pm
    Feb 5, 2007 at 4:24 pm
  • That's not happening, because the alignment is wrong ...unless maybe we switch this field to fall before t_ctid, but that would screw up the MinimalTuple hack. regards, tom lane
    Tom LaneTom Lane
    Jan 5, 2007 at 2:48 pm
    Jan 11, 2007 at 10:57 am
  • Hi! I get failures for the largeobject regression tests on my vc++ build. I don't think this has ever worked, given that those tests are fairly new. Any quick ideas on what's wrong before I dig ...
    Magnus HaganderMagnus Hagander
    Jan 23, 2007 at 2:11 pm
    Mar 10, 2007 at 12:45 pm
  • I was testing the following statement and found it working fine on version 8.2.1. "Fix RENAME to work on variables other than OLD/NEW" I can rename just any variable declared in a PL block apart from ...
    ImadImad
    Jan 30, 2007 at 6:59 pm
    Feb 2, 2007 at 9:11 pm
  • Standard English uses "may", "can", and "might" in different ways: may - permission, "You may borrow my rake." can - ability, "I can lift that log." might - possibility, "It might rain today." ...
    Bruce MomjianBruce Momjian
    Jan 30, 2007 at 5:39 pm
    Feb 2, 2007 at 4:47 pm
  • (working on the PL debugger...) It appears that the libraries listed in shared_preload_libraries will *not* be inherited by spawned backends on Win32 platforms. Do we have to do something special to ...
    KorrydKorryd
    Jan 29, 2007 at 4:06 pm
    Jan 30, 2007 at 3:10 am
  • I've found a situation that causes DROP FUNCTION to fail (tested in 8.1.6, 8.2.1, and 8.3devel): CREATE TABLE foo (id integer); CREATE FUNCTION foofunc() RETURNS trigger AS $$ BEGIN RETURN NEW; END; ...
    Michael FuhrMichael Fuhr
    Jan 22, 2007 at 4:45 am
    Nov 1, 2007 at 12:09 pm
  • decibel=# select version(); PostgreSQL 8.3devel on i386-apple-darwin8.8.2, compiled by GCC i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build 5363) decibel=# select box ...
    Jim C. NasbyJim C. Nasby
    Jan 25, 2007 at 6:02 pm
    Feb 28, 2007 at 12:05 am
  • Not sure whether its worth optimizing, but had spotted this while browsing the code a while back. So thought would post it anyways. The stack usage for toast_insert_or_update() may run into several ...
    Pavan DeolaseePavan Deolasee
    Jan 30, 2007 at 10:18 am
    Feb 1, 2007 at 5:24 pm
  • Hi, This is how I think autovacuum should change with an eye towards being able to run multiple vacuums simultaneously: 1. There will be two kinds of processes, "autovacuum launcher" and "autovacuum ...
    Alvaro HerreraAlvaro Herrera
    Jan 22, 2007 at 7:24 pm
    Jan 27, 2007 at 1:13 pm
  • Attached is some material from an updated src/backend/optimizer/README that describes the optimization principles that the EquivalenceClass rewrite is depending on. Can anyone see any holes in the ...
    Tom LaneTom Lane
    Jan 17, 2007 at 9:48 pm
    Jan 19, 2007 at 4:55 pm
  • We have the ability to conditionally print statements based on error level, but LOG isn't a valid level for log_min_error_statement. We could add a parameter that few people would use, but the right ...
    Bruce MomjianBruce Momjian
    Jan 12, 2007 at 7:12 pm
    Jan 12, 2007 at 9:26 pm
  • Merge Joins require us to potentially Mark and Restore positions in the tuples arriving from executor sub-nodes. This currently means that if the tuples arrive from a Sort node, as they often do in ...
    Simon RiggsSimon Riggs
    Jan 3, 2007 at 7:02 pm
    Jan 10, 2007 at 5:19 pm
  • We already had this functionality in initdb a few versions ago. Did you review why it was removed? -- Peter Eisentraut http://developer.postgresql.org/~petere/
    Peter EisentrautPeter Eisentraut
    Jan 2, 2007 at 10:44 am
    Jan 6, 2007 at 7:40 pm
  • Minor request for clarification: I read in the Developer's FAQ that tabs should be interpreted as 4 spaces. ...and also that pgindent replaces tabs as spaces. Trouble is, there are tabs throughout ...
    Simon RiggsSimon Riggs
    Jan 4, 2007 at 12:41 pm
    Jan 6, 2007 at 2:31 am
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158 users for January 2007

Tom Lane: 318 posts Bruce Momjian: 136 posts Simon Riggs: 99 posts Andrew Dunstan: 72 posts Joshua D. Drake: 56 posts Peter Eisentraut: 56 posts Alvaro Herrera: 48 posts Gregory Stark: 45 posts Magnus Hagander: 45 posts Heikki Linnakangas: 39 posts Jim Nasby: 35 posts Stefan Kaltenbrunner: 32 posts Martijn van Oosterhout: 28 posts Jan Wieck: 24 posts Pavan Deolasee: 22 posts Jim Nasby: 20 posts David Fetter: 19 posts Dave Page: 18 posts Stephen Frost: 18 posts Teodor Sigaev: 17 posts
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