pgsql-performance - April 2020

Discussion of PostgreSQL's performance issues. Please see Guide to reporting problems and Slow Query Questions for some tips on how to write your performance question.

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April 2, 2020

Thread Author Time
BUG #16334: We recently upgraded PG version from 9.5 to 10.10 and system performance is not so good PG Bug reporting form 03:52
Re: BUG #16334: We recently upgraded PG version from 9.5 to 10.10 and system performance is not so good Julien Rouhaud 08:46
Re: BUG #16334: We recently upgraded PG version from 9.5 to 10.10 and system performance is not so good Tejaswini GC 10:22
Re: BUG #16334: We recently upgraded PG version from 9.5 to 10.10 and system performance is not so good Julien Rouhaud 11:04
Re: BUG #16334: We recently upgraded PG version from 9.5 to 10.10 and system performance is not so good Tejaswini GC 11:09
Could someone please help us share the procedure to troubleshoot the locks on proc issues. 📎 postgann2020 s 19:37
Re: Could someone please help us share the procedure to troubleshoot the locks on proc issues. Adrian Klaver 23:00

April 3, 2020

Thread Author Time
Re: Could someone please help us share the procedure to troubleshoot the locks on proc issues. postgann2020 s 05:11
slow query dangal 16:03
Re: slow query Justin Pryzby 16:07
Re: slow query dangal 16:18
Re: Increasing work_mem slows down query, why? Silvio Moioli 21:46

April 4, 2020

Thread Author Time
Re: BUG #16334: We recently upgraded PG version from 9.5 to 10.10 and system performance is not so good Tejaswini GC 06:27
Re: BUG #16334: We recently upgraded PG version from 9.5 to 10.10 and system performance is not so good Julien Rouhaud 07:06

April 5, 2020

Thread Author Time
Postgresql 12, 512 partition by hash. Slow select Arya F 17:48
Re: Postgresql 12, 512 partition by hash. Slow select Andreas Kretschmer 18:41
Re: Postgresql 12, 512 partition by hash. Slow select Tom Lane 18:55
Re: Postgresql 12, 512 partition by hash. Slow select Arya F 19:50
Re: Postgresql 12, 512 partition by hash. Slow select Neil 20:48

April 6, 2020

Thread Author Time
Postgres not using index on views Rick Vincent 14:19

April 7, 2020

Thread Author Time
Re: Postgres not using index on views Justin Pryzby 04:59
Re: Postgres not using index on views Tom Lane 05:09
Re: Postgres not using index on views Laurenz Albe 06:42
RE: Postgres not using index on views Rick Vincent 07:53
RE: Postgres not using index on views Rick Vincent 09:08
Re: Postgres not using index on views Thomas Kellerer 09:18
Re: Postgres not using index on views Thomas Kellerer 09:24
Re: slow query Michael Christofides 10:20
PostgreSQL DBA consulting daya airody 11:50
Re: PostgreSQL DBA consulting Justin Pryzby 11:56

April 9, 2020

Thread Author Time
High insert rate server, unstable insert latency and load peaks with buffer_content and XidGenLock LWlocks with Postgresql 12 version Maxim Boguk 14:51
Re: High insert rate server, unstable insert latency and load peaks with buffer_content and XidGenLock LWlocks with Postgresql 12 version Justin Pryzby 15:16
Re: High insert rate server, unstable insert latency and load peaks with buffer_content and XidGenLock LWlocks with Postgresql 12 version Maxim Boguk 15:29

April 10, 2020

Thread Author Time
Re: proposal: schema variables 📎 Pavel Stehule 17:30

April 13, 2020

Thread Author Time
High kswapd Don Seiler 14:34
Re: High kswapd Justin Pryzby 14:42
Re: High kswapd Don Seiler 14:46
Re: High kswapd Justin Pryzby 14:58
Re: PostgreSQL DBA consulting Amol Tarte 15:04
Re: High kswapd Don Seiler 15:08

April 15, 2020

Thread Author Time
Duplicate WHERE condition changes performance and plan singh400@gmail.com 19:55
Using unlogged tables for web sessions Stephen Carboni 22:53
Re: Duplicate WHERE condition changes performance and plan David Rowley 23:57

April 17, 2020

Thread Author Time
RE: Postgres not using index on views Rick Vincent 14:28
Postgres not using index on views David G. Johnston 14:55
RE: Postgres not using index on views Rick Vincent 15:12

April 20, 2020

Thread Author Time
Re: Duplicate WHERE condition changes performance and plan singh400@gmail.com 00:50
Re: Duplicate WHERE condition changes performance and plan Justin Pryzby 02:33
RE: Postgres not using index on views Rick Vincent 11:10

April 23, 2020

Thread Author Time
PostgreSQL does not choose my indexes well Arcadio Ortega Reinoso 11:36
Re: PostgreSQL does not choose my indexes well Thomas Kellerer 11:43
Re: PostgreSQL does not choose my indexes well David G. Johnston 13:57
Re: PostgreSQL does not choose my indexes well Tom Lane 15:29
Re: PostgreSQL does not choose my indexes well Michael Lewis 16:20
Re: PostgreSQL does not choose my indexes well Tom Lane 16:31
Re: PostgreSQL does not choose my indexes well David G. Johnston 16:50
Re: PostgreSQL does not choose my indexes well Stephen Frost 17:18
Re: PostgreSQL does not choose my indexes well Stephen Frost 17:20
Re: PostgreSQL does not choose my indexes well Tom Lane 17:56
Re: PostgreSQL does not choose my indexes well Stephen Frost 20:01
Re: PostgreSQL does not choose my indexes well Tom Lane 20:33
Re: PostgreSQL does not choose my indexes well David G. Johnston 20:36
Re: PostgreSQL does not choose my indexes well Tom Lane 20:45
Re: PostgreSQL does not choose my indexes well Arcadio Ortega Reinoso 21:01

April 24, 2020

Thread Author Time
Re: Duplicate WHERE condition changes performance and plan singh400@gmail.com 16:33
Re: PostgreSQL does not choose my indexes well Jeff Janes 18:26
Re: PostgreSQL does not choose my indexes well Stephen Frost 18:33
Re: PostgreSQL does not choose my indexes well Tom Lane 19:39
The query plan get all columns but I'm using only one column. Moises Lopez 21:11
Re: PostgreSQL does not choose my indexes well Jeff Janes 22:59

April 25, 2020

Thread Author Time
Re: PostgreSQL does not choose my indexes well Stephen Frost 12:02
Re: The query plan get all columns but I'm using only one column. Tom Lane 14:24
Re: PostgreSQL does not choose my indexes well Arcadio Ortega Reinoso 19:47
Re: The query plan get all columns but I'm using only one column. Michael Lewis 20:40

April 27, 2020

Thread Author Time
Recursive query slow on strange conditions Jean-Christophe Boggio 17:49
Re: Recursive query slow on strange conditions Justin Pryzby 18:10
Re: Recursive query slow on strange conditions Andreas Joseph Krogh 19:37
Re: Recursive query slow on strange conditions Jean-Christophe Boggio 20:22

April 29, 2020

Thread Author Time
NUMA settings Marc Rechté 06:54
Re: NUMA settings Laurenz Albe 08:50
Re: The query plan get all columns but I'm using only one column. 📎 Moises Lopez 19:21
Re: The query plan get all columns but I'm using only one column. Michael Lewis 19:36

April 30, 2020

Thread Author Time
Re: The query plan get all columns but I'm using only one column. Michael Lewis 15:52
Re: The query plan get all columns but I'm using only one column. Moises Lopez 16:26

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