Increase upper bound for bgwriter_lru_maxpages.

robertmhaas · robertmhaas · commit 14ca9abfbe46 · 2017-02-02T14:43:38.000-05:00
There is no particularly good reason to limit this value to 1000, so increase the limit to INT_MAX / 2, the same limit we use for shared_buffers. It's not clear how much practical effect larger settings will have, but there seems no harm in letting people try it. Jim Nasby, less a comment change I stripped out. Discussion: http://postgr.es/m/f6e58a22-030b-eb8a-5457-f62fb08d701c@BlueTreble.com
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
@@ -2419,7 +2419,7 @@ static struct config_int ConfigureNamesInt[] =
 			NULL
 		},
 		&bgwriter_lru_maxpages,
-		100, 0, 1000,
+		100, 0, INT_MAX / 2, /* Same upper limit as shared_buffers */
 		NULL, NULL, NULL
 	},
 
