diff options
Diffstat (limited to 'src/backend/optimizer/path/costsize.c')
| -rw-r--r-- | src/backend/optimizer/path/costsize.c | 51 |
1 files changed, 1 insertions, 50 deletions
diff --git a/src/backend/optimizer/path/costsize.c b/src/backend/optimizer/path/costsize.c index 848065ee7b2..0cdb7905a2f 100644 --- a/src/backend/optimizer/path/costsize.c +++ b/src/backend/optimizer/path/costsize.c @@ -71,7 +71,6 @@ #ifdef _MSC_VER #include <float.h> /* for _isnan */ #endif -#include <limits.h> #include <math.h> #include "access/htup_details.h" @@ -88,7 +87,6 @@ #include "optimizer/planmain.h" #include "optimizer/restrictinfo.h" #include "parser/parsetree.h" -#include "utils/guc.h" #include "utils/lsyscache.h" #include "utils/selfuncs.h" #include "utils/spccache.h" @@ -104,7 +102,7 @@ double cpu_tuple_cost = DEFAULT_CPU_TUPLE_COST; double cpu_index_tuple_cost = DEFAULT_CPU_INDEX_TUPLE_COST; double cpu_operator_cost = DEFAULT_CPU_OPERATOR_COST; -int effective_cache_size = -1; /* will get replaced */ +int effective_cache_size = DEFAULT_EFFECTIVE_CACHE_SIZE; Cost disable_cost = 1.0e10; @@ -4093,50 +4091,3 @@ page_size(double tuples, int width) { return ceil(relation_byte_size(tuples, width) / BLCKSZ); } - -/* - * GUC check_hook for effective_cache_size - */ -bool -check_effective_cache_size(int *newval, void **extra, GucSource source) -{ - /* - * -1 is the documented way of requesting auto-tune, but we also treat - * zero as meaning that, since we don't consider zero a valid setting. - */ - if (*newval <= 0) - { - /* - * Substitute the auto-tune value, being wary of overflow. - */ - if (NBuffers < INT_MAX / 4) - *newval = NBuffers * 4; - else - *newval = INT_MAX; - } - - Assert(*newval > 0); - - return true; -} - -/* - * Initialize effective_cache_size at the end of GUC startup, or when - * a setting in postgresql.conf is removed. - * - * Note: check_effective_cache_size() will have been called when the boot_val - * was installed, but we will not have known the final value of NBuffers at - * that time, which is why this has to be called at the end of GUC startup. - */ -void -set_default_effective_cache_size(void) -{ - /* - * We let check_effective_cache_size() compute the actual setting. Note - * that this call is a no-op if the user has supplied a setting (since - * that will have a higher priority than PGC_S_DYNAMIC_DEFAULT). - */ - SetConfigOption("effective_cache_size", "-1", - PGC_POSTMASTER, PGC_S_DYNAMIC_DEFAULT); - Assert(effective_cache_size > 0); -} |