From 26a3af390439d02fc9fb6ad33c39d3c98cc3d2ee Mon Sep 17 00:00:00 2001
From: "shaojin.wensj" <shaojin.wensj@alibaba-inc.com>
Date: Mon, 3 Dec 2018 09:41:15 +0800
Subject: [PATCH] set StringBuilder initial Size, reduce memory copy.

---
 src/main/java/com/alibaba/druid/pool/DruidDataSource.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
index c89bacbdf5..54c03cd0c2 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
@@ -1516,7 +1516,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
         if (holder == null) {
             long waitNanos = waitNanosLocal.get();
 
-            StringBuilder buf = new StringBuilder();
+            StringBuilder buf = new StringBuilder(128);
             buf.append("wait millis ")//
                .append(waitNanos / (1000 * 1000))//
                .append(", active ").append(activeCount)//