Merge pull request #214 from tilezen/reduce-queue-buffer-size

Reduce queue buffer size
tilezen · Jun 9, 2017 · c760176 · c760176
2 parents 746217a + ae7af0d
commit c760176
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/tilequeue/command.py b/tilequeue/command.py
@@ -576,7 +576,8 @@ def tilequeue_process(cfg, peripherals):
     assert n_simultaneous_query_sets > 0
     # reduce queue size when we're rendering metatiles to try and avoid the
     # geometry waiting to be processed from taking up all the RAM!
-    default_queue_buffer_size = max(1, 128 >> (2 * (cfg.metatile_size or 0)))
+    size_sqr = (cfg.metatile_size or 1)**2
+    default_queue_buffer_size = max(1, 16 / size_sqr)
     sql_queue_buffer_size = cfg.sql_queue_buffer_size or \
         default_queue_buffer_size
     proc_queue_buffer_size = cfg.proc_queue_buffer_size or \