database/postgres
database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-04-22 23:02:54 +03:00
Code

Reduce the default value of autovacuum_vacuum_cost_delay to 2ms.

Browse Source 
This is a better way to implement the desired change of increasing
autovacuum's default resource consumption.

Discussion: https://postgr.es/m/28720.1552101086@sss.pgh.pa.us
This commit is contained in:
Tom Lane 2019-03-10 15:16:21 -04:00
parent 52985e4fea
commit cbccac371c
3 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
doc/src/sgml/config.sgml
View File

@ -7033,7 +7033,7 @@ COPY postgres_log FROM '/full/path/to/logfile.csv' WITH csv;
Specifies the cost delay value that will be used in automatic
<command>VACUUM</command> operations. If -1 is specified, the regular
<xref linkend="guc-vacuum-cost-delay"/> value will be used.
The default value is 20 milliseconds.
The default value is 2 milliseconds.
This parameter can only be set in the <filename>postgresql.conf</filename>
file or on the server command line;
but the setting can be overridden for individual tables by

2
src/backend/utils/misc/guc.c
View File

@ -3312,7 +3312,7 @@ static struct config_real ConfigureNamesReal[] =
GUC_UNIT_MS
},
&autovacuum_vac_cost_delay,
20, -1, 100,
2, -1, 100,
NULL, NULL, NULL
},

2
src/backend/utils/misc/postgresql.conf.sample
View File

@ -589,7 +589,7 @@
#autovacuum_multixact_freeze_max_age = 400000000 # maximum multixact age
# before forced vacuum
# (change requires restart)
#autovacuum_vacuum_cost_delay = 20ms # default vacuum cost delay for
#autovacuum_vacuum_cost_delay = 2ms # default vacuum cost delay for
# autovacuum, in milliseconds;
# -1 means use vacuum_cost_delay
#autovacuum_vacuum_cost_limit = -1 # default vacuum cost limit for