diff --git a/tests/performance/mmap_vs_directio/mmap_vs_directio.rb b/tests/performance/mmap_vs_directio/mmap_vs_directio.rb
index 887804fa2..d53cb5bd3 100644
--- a/tests/performance/mmap_vs_directio/mmap_vs_directio.rb
+++ b/tests/performance/mmap_vs_directio/mmap_vs_directio.rb
@@ -7,7 +7,7 @@
 class MmapVsDirectIoTest < PerformanceTest
 
   def timeout_seconds
-    1200
+    1800
   end
 
   def setup
@@ -27,10 +27,10 @@ def test_profile
     if testing_locally?
       { :doc_count      => 50_000,
         :query_runtime  => 20,
-        :cache_sizes_mb => [0, 16, 128, 1024] }
+        :cache_sizes_mb => [0, 16, 128, 512] }
     else
       { :doc_count      => -1,
-        :query_runtime  => 60,
+        :query_runtime  => 30,
         :cache_sizes_mb => [0, 24, 256, 10 * 1024] }
     end
   end