diff --git a/lib/trino-parquet/src/main/java/io/trino/parquet/reader/PrimitiveColumnReader.java b/lib/trino-parquet/src/main/java/io/trino/parquet/reader/PrimitiveColumnReader.java
index 68b6b8b6d2eb..6eba0774a0e8 100644
--- a/lib/trino-parquet/src/main/java/io/trino/parquet/reader/PrimitiveColumnReader.java
+++ b/lib/trino-parquet/src/main/java/io/trino/parquet/reader/PrimitiveColumnReader.java
@@ -212,8 +212,10 @@ public void prepareNextRead(int batchSize)
 
     public ColumnChunk readPrimitive(Field field)
     {
-        IntList definitionLevels = new IntArrayList();
-        IntList repetitionLevels = new IntArrayList();
+        // Pre-allocate these arrays to the necessary size. This saves a substantial amount of
+        // CPU time by avoiding container resizing.
+        IntList definitionLevels = new IntArrayList(nextBatchSize);
+        IntList repetitionLevels = new IntArrayList(nextBatchSize);
         seek();
         BlockBuilder blockBuilder = field.getType().createBlockBuilder(null, nextBatchSize);
         int valueCount = 0;