Increase size of internal PROJ cache

Creating PROJ projections is specially slow for PROJ6, so
we want to avoid recalculating them as much as possible

This is specially important for ST_Buffer(geography) since
it decides the SRID, and thus the projection, dinamically
based on the geometry position around the globe.

References #4372

git-svn-id: http://svn.osgeo.org/postgis/trunk@17542 b70326c6-7e19-0410-871a-916f4a2858ee

diff --git a/libpgcommon/lwgeom_cache.h b/libpgcommon/lwgeom_cache.h
index b6ccc25a7ede56a84095224e3bf69048fbdb0999..034e494c5d33f005a717e940a41410a5334cb106 100644 (file)
--- a/libpgcommon/lwgeom_cache.h
+++ b/libpgcommon/lwgeom_cache.h
@@ -73,7 +73,7 @@ typedef struct struct_PROJSRSCacheItem
 PROJSRSCacheItem;
 
 /* PROJ 4 lookup transaction cache methods */
-#define PROJ_CACHE_ITEMS       8
+#define PROJ_CACHE_ITEMS 128
 
 /*
 * The proj4 cache holds a fixed number of reprojection

diff --git a/libpgcommon/lwgeom_transform.c b/libpgcommon/lwgeom_transform.c
index f5a612a1ea9cc72136f0a5e2cbb30145c53af2e1..c65d29d0bc6be7b9de21015da3463f51728de17a 100644 (file)
--- a/libpgcommon/lwgeom_transform.c
+++ b/libpgcommon/lwgeom_transform.c
@@ -40,15 +40,13 @@
 */
 static char *spatialRefSysSchema = NULL;
 
-
 /*
  * PROJ 4 backend hash table initial hash size
  * (since 16 is the default portal hash table size, and we would
  * typically have 2 entries per portal
- * then we shall use a default size of 32)
+ * then we shall use a default size of 256)
  */
-#define PROJ_BACKEND_HASH_SIZE 32
-
+#define PROJ_BACKEND_HASH_SIZE 256
 
 /**
  * Backend PROJ hash table