keycloak-memoizeit

diff --git a/testsuite/performance/README.md b/testsuite/performance/README.md
index 0fcd6ff..0ccc450 100644
--- a/testsuite/performance/README.md
+++ b/testsuite/performance/README.md
@@ -199,6 +199,7 @@ When running the tests it is necessary to define the dataset to be used.
 | `filterResults` | Whether to filter out requests which are outside of the `measurementPeriod`. | `false` |
 | `userThinkTime` | Pause between individual scenario steps. | `5` |
 | `refreshTokenPeriod`| Period after which token should be refreshed. | `10` |
+| `logoutPct`| Percentage of users who should log out at the end of scenario. | `100` |
 
 | Test Assertion | Description | Default Value |
 | --- | --- | --- | 

diff --git a/testsuite/performance/tests/src/main/java/org/keycloak/performance/TestConfig.java b/testsuite/performance/tests/src/main/java/org/keycloak/performance/TestConfig.java
index cba6b72..5b6a11a 100644
--- a/testsuite/performance/tests/src/main/java/org/keycloak/performance/TestConfig.java
+++ b/testsuite/performance/tests/src/main/java/org/keycloak/performance/TestConfig.java
@@ -70,6 +70,7 @@ public class TestConfig {
     public static final boolean filterResults = Boolean.getBoolean("filterResults"); // filter out results outside of measurementPeriod
     public static final int userThinkTime = Integer.getInteger("userThinkTime", 0);
     public static final int refreshTokenPeriod = Integer.getInteger("refreshTokenPeriod", 0);
+    public static final double logoutPct = Double.valueOf(System.getProperty("logoutPct", "100"));
 
     // Computed timestamps
     public static final long simulationStartTime = System.currentTimeMillis();
@@ -139,8 +140,9 @@ public class TestConfig {
         "  measurementPeriod: %s\n"+
         "  filterResults: %s\n"+
         "  userThinkTime: %s\n"+ 
-        "  refreshTokenPeriod: %s",
-        usersPerSec, rampUpPeriod, warmUpPeriod, measurementPeriod, filterResults, userThinkTime, refreshTokenPeriod);
+        "  refreshTokenPeriod: %s\n"+ 
+        "  logoutPct: %s",
+        usersPerSec, rampUpPeriod, warmUpPeriod, measurementPeriod, filterResults, userThinkTime, refreshTokenPeriod, logoutPct);
     }
     
     public static SimpleDateFormat SIMPLE_TIME = new SimpleDateFormat("HH:mm:ss");
@@ -307,6 +309,9 @@ public class TestConfig {
         if (sequentialUsersFrom < -1 || sequentialUsersFrom >= usersPerRealm) {
             throw new RuntimeException("The folowing condition must be met: (-1 <= sequentialUsersFrom < usersPerRealm).");
         }
+        if (logoutPct < 0 || logoutPct > 100) {
+            throw new RuntimeException("The `logoutPct` needs to be between 0 and 100.");
+        }
     }
     
 }

diff --git a/testsuite/performance/tests/src/test/scala/keycloak/OIDCScenarioBuilder.scala b/testsuite/performance/tests/src/test/scala/keycloak/OIDCScenarioBuilder.scala
index d868a89..951b995 100644
--- a/testsuite/performance/tests/src/test/scala/keycloak/OIDCScenarioBuilder.scala
+++ b/testsuite/performance/tests/src/test/scala/keycloak/OIDCScenarioBuilder.scala
@@ -62,9 +62,7 @@ object OIDCScenarioBuilder {
       .refreshTokenSeveralTimes()
 
       .thinkPause()
-      .logout()
-
-      .thinkPause()
+      .randomLogout()
   
   val registerAndLogoutScenario = new OIDCScenarioBuilder()
       .browserOpensLoginPage()
@@ -74,8 +72,7 @@ object OIDCScenarioBuilder {
       .browserPostsRegistrationDetails()
       .adapterExchangesCodeForTokens()
       .thinkPause()
-      .logout()
-      .thinkPause()
+      .randomLogout()
 
 }
 
@@ -119,7 +116,7 @@ class OIDCScenarioBuilder {
   def newThinkPause() : ChainBuilder = {
     pause(TestConfig.userThinkTime, Normal(TestConfig.userThinkTime * 0.2))
   }
-
+  
   def browserOpensLoginPage() : OIDCScenarioBuilder = {
     chainBuilder = chainBuilder
       .exec(http("Browser to Log In Endpoint")
@@ -225,14 +222,27 @@ class OIDCScenarioBuilder {
     this
   }
 
-  def logout() : OIDCScenarioBuilder = {
-    chainBuilder = chainBuilder
-      .exec(http("Browser logout")
+  def logoutChain() : ChainBuilder = {
+    exec(http("Browser logout")
         .get(LOGOUT_ENDPOINT)
         .headers(UI_HEADERS)
         .queryParam("redirect_uri", "${appUrl}")
         .check(status.is(302), header("Location").is("${appUrl}")))
+  }
+  
+  def logout() : OIDCScenarioBuilder = {
+    chainBuilder = chainBuilder.exec(logoutChain)
     this
   }
+  
+  def randomLogout() : OIDCScenarioBuilder = {
+    chainBuilder = chainBuilder
+    .randomSwitch(
+      // logout randomly based on logoutPct param
+      TestConfig.logoutPct -> exec(logoutChain)
+    )
+    this
+  }
+  
 }