diff --git a/src/main/java/com/nhn/pinpoint/profiler/logging/Slf4jLoggerBinder.java b/src/main/java/com/nhn/pinpoint/profiler/logging/Slf4jLoggerBinder.java
index 7e71182af..9ec3a5d9e 100644
--- a/src/main/java/com/nhn/pinpoint/profiler/logging/Slf4jLoggerBinder.java
+++ b/src/main/java/com/nhn/pinpoint/profiler/logging/Slf4jLoggerBinder.java
@@ -12,7 +12,7 @@ import java.util.concurrent.ConcurrentMap;
  */
 public class Slf4jLoggerBinder implements PLoggerBinder {
 
-    private ConcurrentMap<String, PLogger> loggerCache = new ConcurrentHashMap<String, PLogger>(256, 0.75f, 32);
+    private ConcurrentMap<String, PLogger> loggerCache = new ConcurrentHashMap<String, PLogger>(256, 0.75f, 128);
 
     @Override
     public PLogger getLogger(String name) {
diff --git a/src/main/java/com/nhn/pinpoint/profiler/metadata/SimpleCache.java b/src/main/java/com/nhn/pinpoint/profiler/metadata/SimpleCache.java
index ed5df38fd..201b06138 100644
--- a/src/main/java/com/nhn/pinpoint/profiler/metadata/SimpleCache.java
+++ b/src/main/java/com/nhn/pinpoint/profiler/metadata/SimpleCache.java
@@ -12,7 +12,7 @@ import java.util.concurrent.atomic.AtomicInteger;
 public class SimpleCache<T> {
     // 0인값은 존재 하지 않음을 나타냄.
     private final AtomicInteger idGen;
-    private final ConcurrentMap<T, Result> cache = new ConcurrentHashMap<T, Result>(512, 0.75f, 32);
+    private final ConcurrentMap<T, Result> cache = new ConcurrentHashMap<T, Result>(512, 0.75f, 64);
 
     public SimpleCache() {
         this(1);