feat: Use Weilbull distribution for failures

2 files changed, 4 insertions, 3 deletions

diff --git a/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/Sc20Monitor.kt b/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/Sc20Monitor.kt
index d3b2d5c6..40cb9719 100644
--- a/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/Sc20Monitor.kt
+++ b/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/Sc20Monitor.kt
@@ -18,10 +18,11 @@ class Sc20Monitor(
     private var failed: Int = 0
 
     init {
-        outputFile.write("time,requestedBurst,grantedBurst,numberOfDeployedImages,server,hostUsage,powerDraw\n")
+        outputFile.write("time,requestedBurst,grantedBurst,numberOfDeployedImages,server,hostUsage,powerDraw,failedVms\n")
     }
 
     override suspend fun onUpdate(server: Server, previousState: ServerState) {
+        println("${simulationContext.clock.instant()} ${server.uid} ${server.state}")
         if (server.state == ServerState.ERROR) {
             failed++
         }
diff --git a/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/TestExperiment.kt b/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/TestExperiment.kt
index a1619fe2..69174f0f 100644
--- a/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/TestExperiment.kt
+++ b/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/TestExperiment.kt
@@ -89,7 +89,6 @@ fun main(args: Array<String>) {
         val provider = ServiceLoader.load(SimulationEngineProvider::class.java).first()
         val system = provider("test")
         val root = system.newDomain("root")
-
         val chan = Channel<Unit>(Channel.CONFLATED)
 
         root.launch {
@@ -118,7 +117,8 @@ fun main(args: Array<String>) {
 
             root.launch {
                 chan.receive()
-                val faultInjector = UncorrelatedFaultInjector(mu = 2e7)
+                // Parameters from A. Iosup, A Framework for the Study of Grid Inter-Operation Mechanisms, 2009
+                val faultInjector = UncorrelatedFaultInjector(alpha = 9.66772, beta = 12.23796)
                 for (node in bareMetalProvisioner.nodes()) {
                     faultInjector.enqueue(node.metadata["driver"] as FailureDomain)
                 }