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Keep track of the last active slot in the shared ProcState array, so

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that search loops only have to scan that far and not through all maxBackends
entries.  This eliminates a performance penalty for setting maxBackends
much higher than the average number of active backends.  Also, eliminate
no-longer-used 'backend tag' concept.  Remove setting of environment
variables at backend start (except for CYR_RECODE), since none of them
are being examined by the backend any longer.
This commit is contained in:
Tom Lane
2000-11-12 20:51:52 +00:00
parent c48025e799
commit ebb0a20149
10 changed files with 153 additions and 235 deletions
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3
src/backend/utils/init/globals.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/init/globals.c,v 1.46 2000/09/06 14:15:22 petere Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/init/globals.c,v 1.47 2000/11/12 20:51:52 tgl Exp $
*
* NOTES
* Globals used all over the place should be declared here and not
@@ -52,7 +52,6 @@ Relation reldesc; /* current relation descriptor */
char OutputFileName[MAXPGPATH] = "";
BackendId MyBackendId;
BackendTag MyBackendTag;
char *DatabaseName = NULL;
char *DatabasePath = NULL;