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pgsql-performance - December 2012
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2012-12-02
Re: Optimize update query
Vitalii Tymchyshyn (11:14)
Re: Optimize update query
Mark Kirkwood (23:34)
2012-12-03
Re: Optimize update query
Niels Kristian Schjødt (09:37)
2012-12-04
Slow query: bitmap scan troubles
postgresql (15:06)
Re: Slow query: bitmap scan troubles
postgresql (15:21)
Re: Slow query: bitmap scan troubles
Claudio Freire (15:27)
Re: Comparative tps question
John Lister (16:30)
Re: Slow query: bitmap scan troubles
Jeff Janes (17:22)
Re: Slow query: bitmap scan troubles
Claudio Freire (17:25)
Re: Slow query: bitmap scan troubles
Philip Scott (17:35)
Re: Slow query: bitmap scan troubles
postgresql (17:47)
Re: Slow query: bitmap scan troubles
postgresql (18:03)
Re: Slow query: bitmap scan troubles
Philip Scott (18:31)
Re: Slow query: bitmap scan troubles
Claudio Freire (18:31)
Re: Slow query: bitmap scan troubles
Claudio Freire (18:32)
Re: Slow query: bitmap scan troubles
Vitalii Tymchyshyn (18:50)
Re: Slow query: bitmap scan troubles
postgresql (18:54)
Re: Slow query: bitmap scan troubles
Philip Scott (18:55)
Re: Slow query: bitmap scan troubles
postgresql (18:56)
Re: Slow query: bitmap scan troubles
Kevin Grittner (19:09)
Re: Slow query: bitmap scan troubles
Sergey Konoplev (20:11)
Re: Slow query: bitmap scan troubles
Jeff Janes (22:34)
Re: Slow query: bitmap scan troubles
Jeff Janes (23:42)
2012-12-05
CREATING INDEX on column having null values
suhas.basavaraj12 (08:10)
Re: CREATING INDEX on column having null values
Willem Leenen (08:47)
Why is PostgreSQL 9.2 slower than 9.1 in my tests?
Patryk Sidzina (12:09)
xfs perform a lot better than ext4 [WAS: Re: Two identical systems, radically different performance]
Andrea Suisani (15:34)
Re: xfs perform a lot better than ext4 [WAS: Re: Two identical systems, radically different performance]
Jean-David Beyer (16:51)
Re: xfs perform a lot better than ext4 [WAS: Re: Two identical systems, radically different performance]
Claudio Freire (16:56)
Re: xfs perform a lot better than ext4 [WAS: Re: Two identical systems, radically different performance]
Andrew Dunstan (17:00)
Re: Slow query: bitmap scan troubles
Jeff Janes (17:39)
Re: Slow query: bitmap scan troubles
Claudio Freire (17:43)
Re: Slow query: bitmap scan troubles
Tom Lane (18:05)
Ubuntu 12.04 / 3.2 Kernel Bad for PostgreSQL Performance
Shaun Thomas (18:28)
Any idea on how to improve the statistics estimates for this plan?
Guillaume Smet (19:39)
Re: Ubuntu 12.04 / 3.2 Kernel Bad for PostgreSQL Performance
Niels Kristian Schjødt (21:45)
Re: Ubuntu 12.04 / 3.2 Kernel Bad for PostgreSQL Performance
Daniel Farina (22:19)
Re: Ubuntu 12.04 / 3.2 Kernel Bad for PostgreSQL Performance
Shaun Thomas (22:25)
Re: Ubuntu 12.04 / 3.2 Kernel Bad for PostgreSQL Performance
Bruce Momjian (22:41)
Re: Ubuntu 12.04 / 3.2 Kernel Bad for PostgreSQL Performance
Shaun Thomas (23:04)
2012-12-06
Re: Ubuntu 12.04 / 3.2 Kernel Bad for PostgreSQL Performance
Scott Marlowe (00:54)
Perform scan on Toast table
classical_89 (03:08)
Re: Ubuntu 12.04 / 3.2 Kernel Bad for PostgreSQL Performance
Stuart Bishop (07:51)
Re: xfs perform a lot better than ext4 [WAS: Re: Two identical systems, radically different performance]
John Lister (08:29)
Re: Ubuntu 12.04 / 3.2 Kernel Bad for PostgreSQL Performance
John Lister (08:29)
Re: xfs perform a lot better than ext4 [WAS: Re: Two identical systems, radically different performance]
Andrea Suisani (08:44)
Re: xfs perform a lot better than ext4 [WAS: Re: Two identical systems, radically different performance]
Andrea Suisani (09:33)
Re: xfs perform a lot better than ext4 [WAS: Re: Two identical systems, radically different performance]
John Lister (11:37)
Re: Slow query: bitmap scan troubles
postgresql (12:52)
Re: Re: xfs perform a lot better than ext4 [WAS: Re: Two identical systems, radically different performance]
Andrea Suisani (12:53)
Re: Slow query: bitmap scan troubles
postgresql (12:56)
Re: Slow query: bitmap scan troubles
postgresql (14:10)
Re: Slow query: bitmap scan troubles
Jeff Janes (17:27)
Re: Slow query: bitmap scan troubles
Claudio Freire (20:05)
Re: Slow query: bitmap scan troubles
Jeff Janes (21:09)
2012-12-07
How do I track stats on foreign table access through foreign data wrapper?
David Crawford (22:09)
2012-12-08
Re: Any idea on how to improve the statistics estimates for this plan?
Jeff Janes (02:32)
Re: Any idea on how to improve the statistics estimates for this plan?
Tom Lane (04:16)
Re: Any idea on how to improve the statistics estimates for this plan?
Guillaume Smet (14:51)
Re: Slow query: bitmap scan troubles
Guillaume Lelarge (15:15)
Re: Any idea on how to improve the statistics estimates for this plan?
Jeff Janes (19:03)
2012-12-10
Re: Why is PostgreSQL 9.2 slower than 9.1 in my tests?
Jeff Janes (03:53)
Re: Perform scan on Toast table
Albe Laurenz (08:57)
Re: Slow query: bitmap scan troubles
postgresql (09:52)
Do I have a hardware or a software problem?
Niels Kristian Schjødt (22:51)
Re: Do I have a hardware or a software problem?
Evgeny Shishkin (23:00)
Re: Do I have a hardware or a software problem?
Jeff Janes (23:58)
2012-12-11
Re: Do I have a hardware or a software problem?
Niels Kristian Schjødt (10:04)
Re: Why is PostgreSQL 9.2 slower than 9.1 in my tests?
Patryk Sidzina (10:50)
Re: Do I have a hardware or a software problem?
Craig Ringer (13:29)
Re: Do I have a hardware or a software problem?
Niels Kristian Schjødt (13:35)
Re: Do I have a hardware or a software problem?
Evgeny Shishkin (17:15)
Re: Do I have a hardware or a software problem?
Jeff Janes (17:25)
Re: Do I have a hardware or a software problem?
Niels Kristian Schjødt (18:54)
Re: Do I have a hardware or a software problem?
Evgeny Shishkin (19:11)
Occasional timeouts on TRUNCATE and simple INSERTs
Osborn, Jeff (21:19)
Re: Occasional timeouts on TRUNCATE and simple INSERTs
Sergey Konoplev (21:38)
Re: Occasional timeouts on TRUNCATE and simple INSERTs
Merlin Moncure (22:16)
Re: Occasional timeouts on TRUNCATE and simple INSERTs
Osborn, Jeff (22:34)
Re: Do I have a hardware or a software problem?
Niels Kristian Schjødt (22:41)
Re: Do I have a hardware or a software problem?
Evgeny Shishkin (22:44)
Re: Why is PostgreSQL 9.2 slower than 9.1 in my tests?
Jeff Janes (23:53)
2012-12-12
Re: Why is PostgreSQL 9.2 slower than 9.1 in my tests?
Tom Lane (00:38)
Re: Do I have a hardware or a software problem?
Craig Ringer (01:03)
Re: Do I have a hardware or a software problem?
Evgeny Shishkin (01:17)
Re: Do I have a hardware or a software problem?
Craig Ringer (01:29)
Re: Do I have a hardware or a software problem?
Evgeny Shishkin (01:44)
Re: Do I have a hardware or a software problem?
Rosser Schwarz (01:47)
Re: Do I have a hardware or a software problem?
Craig Ringer (02:02)
Re: Do I have a hardware or a software problem?
Evgeny Shishkin (02:13)
Re: Do I have a hardware or a software problem?
David Boreham (02:15)
Re: Do I have a hardware or a software problem?
Evgeny Shishkin (02:20)
Re: Do I have a hardware or a software problem?
David Boreham (02:26)
Re: Do I have a hardware or a software problem?
Evgeny Shishkin (02:38)
Re: Do I have a hardware or a software problem?
David Boreham (02:41)
Re: Do I have a hardware or a software problem?
Craig Ringer (02:47)
Re: Do I have a hardware or a software problem?
Evgeny Shishkin (02:49)
Re: Do I have a hardware or a software problem?
David Boreham (03:05)
Re: Do I have a hardware or a software problem?
Mark Kirkwood (03:07)
Re: Do I have a hardware or a software problem?
Evgeny Shishkin (03:11)
Re: Do I have a hardware or a software problem?
David Boreham (03:19)
hash join vs nested loop join
Huan Ruan (04:25)
Re: hash join vs nested loop join
Evgeny Shishkin (04:33)
Re: hash join vs nested loop join
Evgeny Shishkin (04:59)
Re: Do I have a hardware or a software problem?
Niels Kristian Schjødt (16:22)
Read rows deleted
Alejandro Carrillo (16:26)
Re: hash join vs nested loop join
Jeff Janes (16:28)
Re: Do I have a hardware or a software problem?
Niels Kristian Schjødt (16:46)
Re: Savepoints in transactions for speed?
Jeff Janes (17:01)
track_activity_query_size
Andrew Dunstan (20:02)
Re: Read rows deleted
Sergey Konoplev (20:13)
Re: Read rows deleted
Alejandro Carrillo (20:24)
Re: Read rows deleted
Andrew Dunstan (20:30)
encouraging index-only scans
Andrew Dunstan (21:06)
Re: encouraging index-only scans
Tom Lane (21:32)
Re: encouraging index-only scans
Andrew Dunstan (22:12)
Re: encouraging index-only scans
Andrew Dunstan (22:27)
Re: Do I have a hardware or a software problem?
Craig Ringer (23:26)
Re: hash join vs nested loop join
Kevin Grittner (23:47)
2012-12-13
Re: hash join vs nested loop join
Huan Ruan (00:56)
Re: hash join vs nested loop join
Huan Ruan (01:10)
Re: [PERFORM] encouraging index-only scans
Bruce Momjian (02:48)
Re: [PERFORM] encouraging index-only scans
Tom Lane (03:51)
Limit & offset effect on query plans
Amitabh Kant (04:08)
Re: Limit & offset effect on query plans
Pavan Deolasee (04:43)
Re: [PERFORM] encouraging index-only scans
Pavan Deolasee (04:48)
Memory issue for inheritance tables.
Hari Babu (04:52)
Re: [PERFORM] encouraging index-only scans
Simon Riggs (09:40)
Re: [PERFORM] encouraging index-only scans
Bruce Momjian (13:46)
Re: Do I have a hardware or a software problem?
Jeff Janes (15:10)
Re: hash join vs nested loop join
Kevin Grittner (15:26)
Re: [PERFORM] encouraging index-only scans
Peter Geoghegan (15:31)
problem with large inserts
Lutz Fischer (15:37)
Re: Limit & offset effect on query plans
Kevin Grittner (15:47)
Re: problem with large inserts
Willem Leenen (15:49)
Re: problem with large inserts
Filip Rembiałkowski (16:09)
Re: problem with large inserts
Tom Lane (16:10)
Re: Limit & offset effect on query plans
Tom Lane (16:20)
Re: problem with large inserts
Lutz Fischer (16:33)
Re: problem with large inserts
Filip Rembiałkowski (16:44)
Re: Limit & offset effect on query plans
Kevin Grittner (17:07)
Slow queries after vacuum analyze
Ghislain ROUVIGNAC (17:10)
Re: Limit & offset effect on query plans
Tom Lane (17:12)
Re: Limit & offset effect on query plans
Kevin Grittner (18:14)
Re: Slow queries after vacuum analyze
Kevin Grittner (20:42)
Re: Occasional timeouts on TRUNCATE and simple INSERTs
Osborn, Jeff (20:57)
Why does the number of rows are different in actual and estimated.
AI Rumman (22:12)
Re: Why does the number of rows are different in actual and estimated.
Andrew Dunstan (22:36)
Re: Why does the number of rows are different in actual and estimated.
Evgeny Shishkin (22:40)
Re: Why does the number of rows are different in actual and estimated.
Claudio Freire (22:42)
Re: Why does the number of rows are different in actual and estimated.
Andrew Dunstan (23:09)
Re: Why does the number of rows are different in actual and estimated.
Evgeny Shishkin (23:13)
Re: Why does the number of rows are different in actual and estimated.
Tom Lane (23:36)
Re: Why does the number of rows are different in actual and estimated.
Evgeny Shishkin (23:50)
Re: hash join vs nested loop join
Huan Ruan (23:51)
2012-12-14
Re: Why does the number of rows are different in actual and estimated.
Claudio Freire (00:38)
Re: hash join vs nested loop join
Kevin Grittner (00:54)
Re: hash join vs nested loop join
Huan Ruan (04:46)
Re: hash join vs nested loop join
Kevin Grittner (13:48)
backend suddenly becomes slow, then remains slow
Andrew Dunstan (18:40)
Re: Why does the number of rows are different in actual and estimated.
AI Rumman (19:01)
Re: Why does the number of rows are different in actual and estimated.
Claudio Freire (19:12)
Re: Why does the number of rows are different in actual and estimated.
Kevin Grittner (19:14)
Re: Why does the number of rows are different in actual and estimated.
Tom Lane (19:22)
Re: Why does the number of rows are different in actual and estimated.
AI Rumman (19:28)
Re: backend suddenly becomes slow, then remains slow
Tom Lane (19:56)
Re: Why does the number of rows are different in actual and estimated.
Claudio Freire (20:10)
Re: backend suddenly becomes slow, then remains slow
Andrew Dunstan (20:16)
Re: Why does the number of rows are different in actual and estimated.
AI Rumman (20:25)
Re: Why does the number of rows are different in actual and estimated.
Claudio Freire (20:32)
Re: Why does the number of rows are different in actual and estimated.
Kevin Grittner (20:34)
Re: Why does the number of rows are different in actual and estimated.
AI Rumman (22:12)
Re: Why does the number of rows are different in actual and estimated.
Kevin Grittner (22:47)
2012-12-15
Re: Do I have a hardware or a software problem?
Scott Marlowe (00:22)
2012-12-17
Re: How can i find out top high load sql queries in PostgreSQL.
suhas.basavaraj12 (09:21)
Re: How can i find out top high load sql queries in PostgreSQL.
Vibhor Kumar (16:33)
2012-12-18
Re: [PERFORM] Slow query: bitmap scan troubles
Jeff Janes (06:00)
Re: Slow queries after vacuum analyze
Kevin Grittner (20:09)
2012-12-19
Re: [PERFORM] Slow query: bitmap scan troubles
Jeff Janes (01:05)
Re: hash join vs nested loop join
Huan Ruan (01:55)
Re: hash join vs nested loop join
Kevin Grittner (13:16)
Re: [PERFORM] Slow query: bitmap scan troubles
Jeff Janes (14:40)
Re: How can i find out top high load sql queries in PostgreSQL.
Igor Neyman (19:13)
PG 9.1 performance loss due to query plan being changed depending on db data (4s vs 200ms)
Rodrigo Rosenfeld Rosas (19:35)
Why does the query planner use two full indexes, when a dedicated partial index exists?
Richard Neill (21:13)
Re: Why does the query planner use two full indexes, when a dedicated partial index exists?
Sergey Konoplev (22:59)
Re: Why does the query planner use two full indexes, when a dedicated partial index exists?
Richard Neill (23:49)
2012-12-20
Re: Why does the query planner use two full indexes, when a dedicated partial index exists?
Sergey Konoplev (00:08)
Re: Why does the query planner use two full indexes, when a dedicated partial index exists?
Richard Neill (00:22)
Re: hash join vs nested loop join
Huan Ruan (01:02)
Re: Why does the query planner use two full indexes, when a dedicated partial index exists?
Tom Lane (03:06)
Re: Why does the query planner use two full indexes, when a dedicated partial index exists?
Jeff Janes (05:12)
Re: Why does the query planner use two full indexes, when a dedicated partial index exists?
Richard Neill (05:51)
Re: Why does the query planner use two full indexes, when a dedicated partial index exists?
Richard Neill (05:57)
Re: hash join vs nested loop join
Kevin Grittner (14:06)
Re: Why does the query planner use two full indexes, when a dedicated partial index exists?
Tom Lane (15:43)
Re: Why does the query planner use two full indexes, when a dedicated partial index exists?
Tom Lane (15:49)
Performance on Bulk Insert to Partitioned Table
Charles Gomes (17:29)
Re: Performance on Bulk Insert to Partitioned Table
Scott Marlowe (17:39)
Re: Performance on Bulk Insert to Partitioned Table
Charles Gomes (18:55)
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