Adding caching to tags and attribute lookups. Leads to a noticeable speed improvement.

src/utils/dummyrunner/test_queries.py

@@ -0,0 +1,41 @@
+"""
+This is a little routine for viewing the sql queries that are executed by a given
+query as well as count them for optimization testing.
+
+"""
+import sys, os
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))))
+os.environ["DJANGO_SETTINGS_MODULE"] = "game.settings"
+from django.db import connection
+
+
+def count_queries(exec_string, setup_string):
+    """
+    Display queries done by exec_string. Use setup_string
+    to setup the environment to test.
+    """
+
+    exec setup_string
+
+    num_queries_old = len(connection.queries)
+    exec exec_string
+    nqueries = len(connection.queries) - num_queries_old
+
+    for query in connection.queries[-nqueries if nqueries else 1:]:
+        print query["time"], query["sql"]
+    print "Number of queries: %s" % nqueries
+
+if __name__ == "__main__":
+
+    # setup tests here
+
+    setup_string = \
+"""
+from src.objects.models import ObjectDB
+g = ObjectDB.objects.get(db_key="Griatch")
+"""
+    exec_string = \
+"""
+g.tags.all()
+"""
+    count_queries(exec_string, setup_string)