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btree page recycling can be done as soon as page's next-xact label is

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older than current Xmin; we don't have to wait till it's older than
GlobalXmin.
This commit is contained in:
Tom Lane
2003-02-23 23:20:52 +00:00
parent 3bbd6af37c
commit 61b22d3aab
4 changed files with 13 additions and 8 deletions
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5
src/backend/utils/time/tqual.c
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@@ -16,7 +16,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/time/tqual.c,v 1.61 2002/10/08 17:17:19 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/time/tqual.c,v 1.62 2003/02/23 23:20:52 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -33,7 +33,8 @@ Snapshot SnapshotDirty = &SnapshotDirtyData;
Snapshot QuerySnapshot = NULL;
Snapshot SerializableSnapshot = NULL;
/* This is updated by GetSnapshotData: */
/* These are updated by GetSnapshotData: */
TransactionId RecentXmin = InvalidTransactionId;
TransactionId RecentGlobalXmin = InvalidTransactionId;
bool ReferentialIntegritySnapshotOverride = false;