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Re-enable max_standby_delay = -1 using deadlock detection on startup

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process. If startup waits on a buffer pin we send a request to all
backends to cancel themselves if they are holding the buffer pin
required and they are also waiting on a lock. If not, startup waits
until max_standby_delay before cancelling any backend waiting for
the requested buffer pin.
This commit is contained in:
Simon Riggs
2010-02-13 01:32:20 +00:00
parent fafa374f2d
commit b95a720a48
8 changed files with 86 additions and 26 deletions
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4
src/backend/utils/misc/guc.c
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@ -10,7 +10,7 @@
* Written by Peter Eisentraut <peter_e@gmx.net>.
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.538 2010/02/01 13:40:28 sriggs Exp $
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.539 2010/02/13 01:32:20 sriggs Exp $
*
*--------------------------------------------------------------------
*/
@ -1381,7 +1381,7 @@ static struct config_int ConfigureNamesInt[] =
NULL
},
&MaxStandbyDelay,
30, 0, INT_MAX, NULL, NULL
30, -1, INT_MAX, NULL, NULL
},
{