diff --git a/elasticsearch-oss/config/elasticsearch.yml b/elasticsearch-oss/config/elasticsearch.yml
index fa5a7cdf..4800c593 100644
--- a/elasticsearch-oss/config/elasticsearch.yml
+++ b/elasticsearch-oss/config/elasticsearch.yml
@@ -10,3 +10,6 @@ http.port: ${HTTP_PORT}
 path.data: ${PATH_DATA}
 
 network.host: 0.0.0.0
+
+indices.memory.index_buffer_size: 30%
+
diff --git a/elasticsearch-oss/config/jvm.options b/elasticsearch-oss/config/jvm.options
index 79641954..b9407f62 100644
--- a/elasticsearch-oss/config/jvm.options
+++ b/elasticsearch-oss/config/jvm.options
@@ -19,8 +19,8 @@
 # Xms represents the initial size of total heap space
 # Xmx represents the maximum size of total heap space
 
--Xms1024M
--Xmx1024M
+-Xms1280M
+-Xmx1280M
 
 ################################################################
 ## Expert settings