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Clean up some awkward, inaccurate, and inefficient processing around

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MaxStandbyDelay.  Use the GUC units mechanism for the value, and choose more
appropriate timestamp functions for performing tests with it.  Make the
ps_activity manipulation in ResolveRecoveryConflictWithVirtualXIDs have
behavior similar to ps_activity code elsewhere, notably not updating the
display when update_process_title is off and not truncating the display
contents at an arbitrarily-chosen length.  Improve the docs to be explicit
about what MaxStandbyDelay actually measures, viz the difference between
primary and standby servers' clocks, and the possible hazards if their clocks
aren't in sync.
This commit is contained in:
Tom Lane
2010-05-02 02:10:33 +00:00
parent 154163238e
commit f9ed327f76
6 changed files with 78 additions and 94 deletions
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4
src/backend/access/transam/xlog.c
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.407 2010/04/29 21:49:03 tgl Exp $
* $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.408 2010/05/02 02:10:33 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -72,7 +72,7 @@ int XLogArchiveTimeout = 0;
bool XLogArchiveMode = false;
char *XLogArchiveCommand = NULL;
bool EnableHotStandby = false;
int MaxStandbyDelay = 30;
int MaxStandbyDelay = 30 * 1000;
bool fullPageWrites = true;
bool log_checkpoints = false;
int sync_method = DEFAULT_SYNC_METHOD;