diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/Makefile | 6 | ||||
| -rw-r--r-- | src/backend/optimizer/geqo/pg_geqo.sample | 64 |
2 files changed, 68 insertions, 2 deletions
diff --git a/src/backend/Makefile b/src/backend/Makefile index 97552283c39..6317b8abc66 100644 --- a/src/backend/Makefile +++ b/src/backend/Makefile @@ -34,7 +34,7 @@ # # # IDENTIFICATION -# $Header: /cvsroot/pgsql/src/backend/Makefile,v 1.18 1997/01/05 21:17:21 bryanh Exp $ +# $Header: /cvsroot/pgsql/src/backend/Makefile,v 1.19 1997/02/19 13:09:29 scrappy Exp $ # #------------------------------------------------------------------------- @@ -181,7 +181,7 @@ endif install: $(LIBDIR) $(BINDIR) $(HEADERDIR) postgres $(EXP) fmgr.h\ global1.bki.source local1_template1.bki.source \ - libpq/pg_hba.conf.sample + libpq/pg_hba.conf.sample optimizer/geqo/pg_geqo.sample $(INSTALL) $(INSTL_EXE_OPTS) postgres $(BINDIR)/postgres ifeq ($(MAKE_EXPORTS), true) @@ -196,6 +196,8 @@ endif $(LIBDIR)/local1_template1.bki.source $(INSTALL) $(INSTLOPTS) libpq/pg_hba.conf.sample \ $(LIBDIR)/pg_hba.conf.sample + $(INSTALL) $(INSTLOPTS) optimizer/geqo/pg_geqo.sample \ + $(LIBDIR)/pg_geqo.sample $(BINDIR) $(LIBDIR) $(HEADERDIR): mkdir $@ diff --git a/src/backend/optimizer/geqo/pg_geqo.sample b/src/backend/optimizer/geqo/pg_geqo.sample new file mode 100644 index 00000000000..12694e3e4dc --- /dev/null +++ b/src/backend/optimizer/geqo/pg_geqo.sample @@ -0,0 +1,64 @@ +#*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*= +# pg_geqo * +# ------- = +# * +# Example Genetic Algorithm config file = +# for the PostgreSQL * +# Genetic Query Optimization (GEQO) module = +# * +#*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*= +# Martin Utesch * Institute of Automatic Control * +# = University of Mining and Technology = +# utesch@aut.tu-freiberg.de * Freiberg, Germany * +#*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*= + +# this file should be '$PGDATA/pg_geqo', but it doesn't have +# to exist + +# comment character is '#' +# +# separator between recognized tag and possible value +# must be white space + +# qs: means query size, which is the number of relations +# contained in a query + +#=================+===================+=============================+ +# RECOGNIZED TAGS | POSSIBLE VALUES | DEFAULTS | +#=================+===================+=============================+ +# 'Pool_Size' | positive int | 2^(qs+1) | +#-----------------+-------------------+-----------------------------+ +# 'Effort' | [low,medium,high] | medium | +#-----------------+-------------------+-----------------------------+ +# 'Generations' | positive int | 'Effort' * log2('Pool_Size')| +#-----------------+-------------------+-----------------------------+ +# 'Selection_Bias'| [1.50; 2.00] | 2.0 | +#-----------------+-------------------+-----------------------------+ +# 'Random_Seed' | positive long | time(NULL) | +#=================+===================+=============================+ + +# 'Pool_Size' is essential for the genetic algorithm performance. +# It gives us the number of individuals within one population. +# +# 'Effort' 'low' means integer value of 1, 'medium' 40, and 'high' 80. +# +# 'Generations' gives us the stopping criterion for the number +# of iterations within the genetic algorithm. +# +# 'Selection_Bias' gives us the selective pressure within the +# population. +# +# 'Random_Seed' is the random seed for the random() function. +# You don't have to set it. + +# All parameters will be computed within the GEQO module when they +# are not set in the pg_geqo file. + + +# Example pg_geqo settings: +# +#Pool_Size 128 +#Effort low +#Generations 200 +#Random_Seed 830518260 +#Selection_Bias 1.750000 |