1 files changed, 2 insertions, 1 deletions
diff --git a/spark-common/src/main/java/me/lucko/spark/common/util/RollingAverage.java b/spark-common/src/main/java/me/lucko/spark/common/util/RollingAverage.java
index 5b1fd21..514876d 100644
--- a/spark-common/src/main/java/me/lucko/spark/common/util/RollingAverage.java
+++ b/spark-common/src/main/java/me/lucko/spark/common/util/RollingAverage.java
@@ -27,12 +27,13 @@ import java.util.Queue;
 
 public class RollingAverage {
 
-    private final Queue<BigDecimal> samples = new ArrayDeque<>();
+    private final Queue<BigDecimal> samples;
     private final int size;
     private BigDecimal total = BigDecimal.ZERO;
 
     public RollingAverage(int size) {
         this.size = size;
+        this.samples = new ArrayDeque<>(this.size);
     }
 
     public void add(BigDecimal num) {