diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/store/memory/ByteBufferStore.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/store/memory/ByteBufferStore.java
index eecb510212e..c279801ad1e 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/store/memory/ByteBufferStore.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/store/memory/ByteBufferStore.java
@@ -45,7 +45,7 @@ public class ByteBufferStore extends AbstractStore<ByteBufferDirectory> {
     @Inject public ByteBufferStore(ShardId shardId, @IndexSettings Settings indexSettings) {
         super(shardId, indexSettings);
 
-        this.bufferSize = componentSettings.getAsSize("bufferSize", new SizeValue(1, SizeUnit.KB));
+        this.bufferSize = componentSettings.getAsSize("bufferSize", new SizeValue(100, SizeUnit.KB));
         this.cacheSize = componentSettings.getAsSize("cacheSize", new SizeValue(20, SizeUnit.MB));
         this.direct = componentSettings.getAsBoolean("direct", true);
         this.warmCache = componentSettings.getAsBoolean("warmCache", true);
diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/store/memory/HeapStore.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/store/memory/HeapStore.java
index 21c9a16da55..6e223373f65 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/store/memory/HeapStore.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/store/memory/HeapStore.java
@@ -43,7 +43,7 @@ public class HeapStore extends AbstractStore<HeapDirectory> {
     @Inject public HeapStore(ShardId shardId, @IndexSettings Settings indexSettings) {
         super(shardId, indexSettings);
 
-        this.bufferSize = componentSettings.getAsSize("bufferSize", new SizeValue(1, SizeUnit.KB));
+        this.bufferSize = componentSettings.getAsSize("bufferSize", new SizeValue(100, SizeUnit.KB));
         this.cacheSize = componentSettings.getAsSize("cacheSize", new SizeValue(20, SizeUnit.MB));
         this.warmCache = componentSettings.getAsBoolean("warmCache", true);