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Increase work_mem and maintenance_work_mem defaults by 4x

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New defaults are 4MB and 64MB.
This commit is contained in:
Bruce Momjian
2014-02-24 13:04:51 -05:00
parent 6f14a6f703
commit 848ae330a4
3 changed files with 6 additions and 6 deletions
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doc/src/sgml/config.sgml
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@ -1213,7 +1213,7 @@ include 'filename'
<para>
Specifies the amount of memory to be used by internal sort operations
and hash tables before writing to temporary disk files. The value
defaults to one megabyte (<literal>1MB</>).
defaults to four megabytes (<literal>4MB</>).
Note that for a complex query, several sort or hash operations might be
running in parallel; each operation will be allowed to use as much memory
as this value specifies before it starts to write data into temporary
@ -1239,7 +1239,7 @@ include 'filename'
Specifies the maximum amount of memory to be used by maintenance
operations, such as <command>VACUUM</command>, <command>CREATE
INDEX</>, and <command>ALTER TABLE ADD FOREIGN KEY</>. It defaults
to 16 megabytes (<literal>16MB</>). Since only one of these
to 64 megabytes (<literal>64MB</>). Since only one of these
operations can be executed at a time by a database session, and
an installation normally doesn't have many of them running
concurrently, it's safe to set this value significantly larger