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Change commit_delay to be SUSET for 9.3+

Prior to 9.3 the commit_delay affected only the current user,whereas now only the group leader waits while holding theWALWriteLock. Deliberate or accidental settings to a poorvalue could seriously degrade performance for all users.Privileges may be delegated by SECURITY DEFINER functionsfor anyone that needs per-user settings in real situations.Request for change from Peter Geoghegan

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src/backend/utils/misc
- guc.c

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`‎src/backend/utils/misc/guc.c`

Lines changed: 1 addition & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -2042,7 +2042,7 @@ static struct config_int ConfigureNamesInt[] =`
`2042`	`2042`	`},`
`2043`	`2043`
`2044`	`2044`	`{`
`2045`		`-{"commit_delay",PGC_USERSET,WAL_SETTINGS,`
	`2045`	`+{"commit_delay",PGC_SUSET,WAL_SETTINGS,`
`2046`	`2046`	`gettext_noop("Sets the delay in microseconds between transaction commit and "`
`2047`	`2047`	`"flushing WAL to disk."),`
`2048`	`2048`	`NULL`

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Commit13fe298

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`‎src/backend/utils/misc/guc.c`

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