set StringBuilder initial Size, reduce memory copy.

2023-03-04 19:17:16 +00:00 · 2018-12-03 09:41:15 +08:00
parent 4ffa0525c4
commit 26a3af3904
1 changed files with 1 additions and 1 deletions
@@ -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)//