diff --git a/bookkeeper-server/src/main/java/org/apache/bookkeeper/conf/AbstractConfiguration.java b/bookkeeper-server/src/main/java/org/apache/bookkeeper/conf/AbstractConfiguration.java
index f4b378bae3b..7f73b81f65d 100644
--- a/bookkeeper-server/src/main/java/org/apache/bookkeeper/conf/AbstractConfiguration.java
+++ b/bookkeeper-server/src/main/java/org/apache/bookkeeper/conf/AbstractConfiguration.java
@@ -27,6 +27,7 @@
 
 import javax.net.ssl.SSLEngine;
 
+import io.netty.buffer.PooledByteBufAllocator;
 import lombok.extern.slf4j.Slf4j;
 
 import org.apache.bookkeeper.common.allocator.LeakDetectionPolicy;
@@ -1060,7 +1061,7 @@ public T setAllocatorPoolingPolicy(PoolingPolicy poolingPolicy) {
      * @return the configured pooling concurrency for the allocator.
      */
     public int getAllocatorPoolingConcurrency() {
-        return this.getInteger(ALLOCATOR_POOLING_CONCURRENCY, 2 * Runtime.getRuntime().availableProcessors());
+        return this.getInteger(ALLOCATOR_POOLING_CONCURRENCY, PooledByteBufAllocator.defaultNumDirectArena());
     }
 
     /**