Reduce the minimum buffer size

Author: eflumerf

rc/control/bookkeeping.py

@@ -258,8 +258,8 @@ def calculate_max_event_size(ss):
             size += calculate_max_event_size(ss_source)
 
         # enforce minimum
-        if size < 1024000:
-            size = 1024000
+        if size < 1024:
+            size = 1024
 
         _evt_size_cache[ss] = size
         return size