diff --git a/java/java-impl/src/com/intellij/codeInsight/hints/JavaHintUtils.kt b/java/java-impl/src/com/intellij/codeInsight/hints/JavaHintUtils.kt
index 3d2a61e80ab1..65c1952a0bea 100644
--- a/java/java-impl/src/com/intellij/codeInsight/hints/JavaHintUtils.kt
+++ b/java/java-impl/src/com/intellij/codeInsight/hints/JavaHintUtils.kt
@@ -25,8 +25,6 @@ import com.intellij.psi.util.TypeConversionUtil
 
 object JavaInlayHintsProvider {
 
-  var isDebug = false
-  
   fun createHints(callExpression: PsiCallExpression): Set<InlayInfo> {
     val resolveResult = callExpression.resolveMethodGenerics()
     val hints = createHintsForResolvedMethod(callExpression, resolveResult)
@@ -181,8 +179,8 @@ object JavaInlayHintsProvider {
       else -> false
     }
 
-    if (isDebug) {
-      println("${callArgument.text} : ${callArgument.javaClass} : isShowHint->$isShowHint")
+    if (ParameterHintsPassFactory.isDebug()) {
+      println("${System.nanoTime()}: ${callArgument.text} : ${callArgument.javaClass} : isShowHint->$isShowHint")
     }
     
     return isShowHint
diff --git a/java/java-tests/testSrc/com/intellij/codeInsight/daemon/inlays/InlayParameterHintsTest.kt b/java/java-tests/testSrc/com/intellij/codeInsight/daemon/inlays/InlayParameterHintsTest.kt
index 74f38053cb7e..7a813df4bbb6 100644
--- a/java/java-tests/testSrc/com/intellij/codeInsight/daemon/inlays/InlayParameterHintsTest.kt
+++ b/java/java-tests/testSrc/com/intellij/codeInsight/daemon/inlays/InlayParameterHintsTest.kt
@@ -17,6 +17,7 @@ package com.intellij.codeInsight.daemon.inlays
 
 import com.intellij.codeInsight.daemon.impl.ParameterHintsPresentationManager
 import com.intellij.codeInsight.hints.InlayInfo
+import com.intellij.codeInsight.hints.ParameterHintsPassFactory
 import com.intellij.codeInsight.hints.settings.ParameterNameHintsSettings
 import com.intellij.openapi.command.WriteCommandAction
 import com.intellij.openapi.editor.Document
@@ -87,6 +88,11 @@ abstract class InlayParameterHintsTest : LightCodeInsightFixtureTestCase() {
     myFixture.doHighlighting()
     val editor = myFixture.editor
     val allInlays = editor.inlayModel.getInlineElementsInRange(0, editor.document.textLength)
+
+    if (ParameterHintsPassFactory.isDebug()) {
+      println("${System.nanoTime()}: [HintTests] inlays extracted")
+    }
+    
     val hintManager = ParameterHintsPresentationManager.getInstance()
     return allInlays
       .filter { hintManager.isParameterHint(it) }
diff --git a/java/java-tests/testSrc/com/intellij/codeInsight/daemon/inlays/JavaParameterNameHintsTest.kt b/java/java-tests/testSrc/com/intellij/codeInsight/daemon/inlays/JavaParameterNameHintsTest.kt
index c0e777b8af87..6e399ba0f8e5 100644
--- a/java/java-tests/testSrc/com/intellij/codeInsight/daemon/inlays/JavaParameterNameHintsTest.kt
+++ b/java/java-tests/testSrc/com/intellij/codeInsight/daemon/inlays/JavaParameterNameHintsTest.kt
@@ -15,7 +15,7 @@
  */
 package com.intellij.codeInsight.daemon.inlays
 
-import com.intellij.codeInsight.hints.JavaInlayHintsProvider
+import com.intellij.codeInsight.hints.ParameterHintsPassFactory
 import com.intellij.codeInsight.hints.settings.ParameterNameHintsSettings
 import com.intellij.lang.java.JavaLanguage
 
@@ -573,7 +573,7 @@ class Key {
 
   fun `test poly and binary expressions`() {
     try {
-      JavaInlayHintsProvider.isDebug = true
+      ParameterHintsPassFactory.setDebug(true)
       check("""
 class Test {
   void test() {
@@ -589,7 +589,7 @@ class Test {
 """)
     }
     finally {
-      JavaInlayHintsProvider.isDebug = false
+      ParameterHintsPassFactory.setDebug(false)
     }
   }
 
diff --git a/platform/lang-impl/src/com/intellij/codeInsight/hints/ParameterHintsPassFactory.java b/platform/lang-impl/src/com/intellij/codeInsight/hints/ParameterHintsPassFactory.java
index 01fd4e930861..b1c04e80ba51 100644
--- a/platform/lang-impl/src/com/intellij/codeInsight/hints/ParameterHintsPassFactory.java
+++ b/platform/lang-impl/src/com/intellij/codeInsight/hints/ParameterHintsPassFactory.java
@@ -43,6 +43,7 @@ import com.intellij.util.containers.HashSet;
 import gnu.trove.TIntObjectHashMap;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import org.jetbrains.annotations.TestOnly;
 
 import java.util.*;
 import java.util.stream.Collectors;
@@ -50,6 +51,18 @@ import java.util.stream.Collectors;
 public class ParameterHintsPassFactory extends AbstractProjectComponent implements TextEditorHighlightingPassFactory {
   private static final Key<Boolean> REPEATED_PASS = Key.create("RepeatedParameterHintsPass");
 
+  private static boolean isDebug = false;
+  
+  @TestOnly
+  public static void setDebug(boolean value) {
+    isDebug = value;  
+  }
+  
+  @TestOnly
+  public static boolean isDebug() {
+    return isDebug;
+  }
+  
   public ParameterHintsPassFactory(Project project, TextEditorHighlightingPassRegistrar registrar) {
     super(project);
     registrar.registerTextEditorHighlightingPass(this, null, null, false, -1);
@@ -91,7 +104,15 @@ public class ParameterHintsPassFactory extends AbstractProjectComponent implemen
         .filter((e) -> e != null)
         .collect(Collectors.toList());
 
+      if (isDebug) {
+        System.out.println(System.nanoTime() + ": [HintsPass] Traversing started");
+      }
+      
       SyntaxTraverser.psiTraverser(myFile).forEach(element -> process(element, provider, matchers));
+      
+      if (isDebug) {
+        System.out.println(System.nanoTime() + ": [HintsPass] Traversing ended");
+      }
     }
 
     private static Set<String> getBlackList(Language language) {