diff options
Diffstat (limited to 'src/include/optimizer/geqo.h')
| -rw-r--r-- | src/include/optimizer/geqo.h | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/src/include/optimizer/geqo.h b/src/include/optimizer/geqo.h index 249b477223..caa05f52ee 100644 --- a/src/include/optimizer/geqo.h +++ b/src/include/optimizer/geqo.h @@ -6,7 +6,7 @@ * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/optimizer/geqo.h,v 1.33 2003/11/29 22:41:07 pgsql Exp $ + * $PostgreSQL: pgsql/src/include/optimizer/geqo.h,v 1.34 2004/01/21 23:33:34 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -44,22 +44,27 @@ /* * Configuration options + * + * If you change these, update backend/utils/misc/postgresql.sample.conf */ -/* If you change these, update backend/utils/misc/postgresql.sample.conf */ extern int Geqo_pool_size; #define DEFAULT_GEQO_POOL_SIZE 0 /* = default based on no. of relations. */ #define MIN_GEQO_POOL_SIZE 128 #define MAX_GEQO_POOL_SIZE 1024 -extern int Geqo_effort; /* 1 .. inf, only used to calculate - * generations default */ extern int Geqo_generations; /* 1 .. inf, or 0 to use default based on * pool size */ +extern int Geqo_effort; /* only used to calculate default for + * generations */ + +#define DEFAULT_GEQO_EFFORT 40 +#define MIN_GEQO_EFFORT 1 +#define MAX_GEQO_EFFORT 100 + extern double Geqo_selection_bias; -/* If you change these, update backend/utils/misc/postgresql.sample.conf */ #define DEFAULT_GEQO_SELECTION_BIAS 2.0 #define MIN_GEQO_SELECTION_BIAS 1.5 #define MAX_GEQO_SELECTION_BIAS 2.0 |