From 751971d91c028fb19e20a2a424431da3f11a6713 Mon Sep 17 00:00:00 2001
From: Georgios Andreadis <info@gandreadis.com>
Date: Sat, 11 Apr 2020 11:10:27 +0200
Subject: Fix computation of VM interference set size

---
 .../atlarge/opendc/core/workload/PerformanceInterferenceModel.kt   | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/opendc/opendc-core/src/main/kotlin/com/atlarge/opendc/core/workload/PerformanceInterferenceModel.kt b/opendc/opendc-core/src/main/kotlin/com/atlarge/opendc/core/workload/PerformanceInterferenceModel.kt
index ea110934..1efe7588 100644
--- a/opendc/opendc-core/src/main/kotlin/com/atlarge/opendc/core/workload/PerformanceInterferenceModel.kt
+++ b/opendc/opendc-core/src/main/kotlin/com/atlarge/opendc/core/workload/PerformanceInterferenceModel.kt
@@ -31,12 +31,11 @@ data class PerformanceInterferenceModel(
         }
         val score = intersectingItems
             .filter { it.minServerLoad <= currentServerLoad }
-            .map { it.performanceScore }
-            .min()
+            .minBy { it.performanceScore }
 
         // Apply performance penalty to (on average) only one of the VMs
-        return if (score != null && Random.nextInt(items.size) == 0) {
-            score
+        return if (score != null && Random.nextInt(score.workloadNames.size) == 0) {
+            score.performanceScore
         } else {
             1.0
         }
-- 
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