feat: Add option for specifying failure interval

6 files changed, 23 insertions, 22 deletions

diff --git a/opendc/opendc-experiments-sc20/schema.sql b/opendc/opendc-experiments-sc20/schema.sql
index 515348c6..92cb5d1f 100644
--- a/opendc/opendc-experiments-sc20/schema.sql
+++ b/opendc/opendc-experiments-sc20/schema.sql
@@ -30,7 +30,7 @@ CREATE TABLE scenarios
     workload_name     TEXT                  NOT NULL,
     workload_fraction DOUBLE PRECISION      NOT NULL,
     allocation_policy TEXT                  NOT NULL,
-    failures          BOOLEAN               NOT NULL,
+    failure_frequency DOUBLE PRECISION      NOT NULL,
     interference      BOOLEAN               NOT NULL,
 
     FOREIGN KEY (portfolio_id) REFERENCES portfolios (id)
diff --git a/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/ExperimentHelpers.kt b/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/ExperimentHelpers.kt
index 2c41dd7b..1bc463c3 100644
--- a/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/ExperimentHelpers.kt
+++ b/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/ExperimentHelpers.kt
@@ -70,7 +70,7 @@ private val logger = KotlinLogging.logger {}
  */
 suspend fun createFailureDomain(
     seed: Int,
-    failureInterval: Int,
+    failureInterval: Double,
     bareMetalProvisioner: ProvisioningService,
     chan: Channel<Unit>
 ): Domain {
@@ -93,12 +93,12 @@ suspend fun createFailureDomain(
 /**
  * Obtain the [FaultInjector] to use for the experiments.
  */
-fun createFaultInjector(domain: Domain, random: Random, failureInterval: Int): FaultInjector {
+fun createFaultInjector(domain: Domain, random: Random, failureInterval: Double): FaultInjector {
     // Parameters from A. Iosup, A Framework for the Study of Grid Inter-Operation Mechanisms, 2009
     // GRID'5000
     return CorrelatedFaultInjector(
         domain,
-        iatScale = ln(failureInterval.toDouble()), iatShape = 1.03, // Hours
+        iatScale = ln(failureInterval), iatShape = 1.03, // Hours
         sizeScale = 1.88, sizeShape = 1.25,
         dScale = 9.51, dShape = 3.21, // Minutes
         random = random
diff --git a/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/Portfolios.kt b/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/Portfolios.kt
index 7e54f40f..668304b6 100644
--- a/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/Portfolios.kt
+++ b/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/Portfolios.kt
@@ -27,7 +27,7 @@ package com.atlarge.opendc.experiments.sc20
 abstract class AbstractSc20Portfolio(name: String) : Portfolio(name) {
     abstract val topologies: List<Topology>
     abstract val workloads: List<Workload>
-    abstract val operationalPhenomena: List<Pair<Boolean, Boolean>>
+    abstract val operationalPhenomena: List<Pair<Double, Boolean>>
     abstract val allocationPolicies: List<String>
 
     open val repetitions = 8
@@ -35,7 +35,7 @@ abstract class AbstractSc20Portfolio(name: String) : Portfolio(name) {
     override val scenarios: Sequence<Scenario> = sequence {
         for (topology in topologies) {
             for (workload in workloads) {
-                for ((hasFailures, hasInterference) in operationalPhenomena) {
+                for ((failureFrequency, hasInterference) in operationalPhenomena) {
                     for (allocationPolicy in allocationPolicies) {
                         yield(
                             Scenario(
@@ -44,7 +44,7 @@ abstract class AbstractSc20Portfolio(name: String) : Portfolio(name) {
                                 topology,
                                 workload,
                                 allocationPolicy,
-                                hasFailures,
+                                failureFrequency,
                                 hasInterference
                             )
                         )
@@ -55,6 +55,8 @@ abstract class AbstractSc20Portfolio(name: String) : Portfolio(name) {
     }
 }
 
+private val defaultFailureInterval = 24.0 * 7
+
 object HorVerPortfolio : AbstractSc20Portfolio("horizontal_vs_vertical") {
     override val topologies = listOf(
         Topology("base"),
@@ -76,7 +78,7 @@ object HorVerPortfolio : AbstractSc20Portfolio("horizontal_vs_vertical") {
     )
 
     override val operationalPhenomena = listOf(
-        true to true
+        defaultFailureInterval to true
     )
 
     override val allocationPolicies = listOf(
@@ -101,7 +103,7 @@ object MoreVelocityPortfolio : AbstractSc20Portfolio("more_velocity") {
     )
 
     override val operationalPhenomena = listOf(
-        true to true
+        defaultFailureInterval to true
     )
 
     override val allocationPolicies = listOf(
@@ -125,7 +127,7 @@ object MoreHpcPortfolio : AbstractSc20Portfolio("more_hpc") {
     )
 
     override val operationalPhenomena = listOf(
-        true to true
+        defaultFailureInterval to true
     )
 
     override val allocationPolicies = listOf(
@@ -145,10 +147,10 @@ object OperationalPhenomenaPortfolio : AbstractSc20Portfolio("operational_phenom
     )
 
     override val operationalPhenomena = listOf(
-        true to true,
-        false to true,
-        true to false,
-        true to true
+        defaultFailureInterval to true,
+        0.0 to true,
+        defaultFailureInterval to false,
+        defaultFailureInterval to true
     )
 
     override val allocationPolicies = listOf(
diff --git a/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/Scenario.kt b/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/Scenario.kt
index 66a8babf..457255cb 100644
--- a/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/Scenario.kt
+++ b/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/Scenario.kt
@@ -62,9 +62,8 @@ public class Scenario(
     val topology: Topology,
     val workload: Workload,
     val allocationPolicy: String,
-    val hasFailures: Boolean,
-    val hasInterference: Boolean,
-    val failureInterval: Int = 24 * 7
+    val failureFrequency: Double,
+    val hasInterference: Boolean
 ) {
     /**
      * The runs this scenario consists of.
@@ -101,9 +100,9 @@ public class Scenario(
         root.launch {
             val (bareMetalProvisioner, scheduler) = createProvisioner(root, environment, allocationPolicy)
 
-            val failureDomain = if (hasFailures) {
+            val failureDomain = if (failureFrequency > 0) {
                 logger.debug("ENABLING failures")
-                createFailureDomain(seeder.nextInt(), failureInterval, bareMetalProvisioner, chan)
+                createFailureDomain(seeder.nextInt(), failureFrequency, bareMetalProvisioner, chan)
             } else {
                 null
             }
diff --git a/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/util/DatabaseHelper.kt b/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/util/DatabaseHelper.kt
index 0292a2e3..4fcfdb6b 100644
--- a/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/util/DatabaseHelper.kt
+++ b/opendc/opendc-experiments-sc20/src/main/kotlin/com/atlarge/opendc/experiments/sc20/util/DatabaseHelper.kt
@@ -48,7 +48,7 @@ class DatabaseHelper(val conn: Connection) : Closeable {
     /**
      * Prepared statement for creating a scenario
      */
-    private val createScenario = conn.prepareStatement("INSERT INTO scenarios (portfolio_id, repetitions, topology, workload_name, workload_fraction, allocation_policy, failures, interference) VALUES (?, ?, ?, ?, ?, ?, ?, ?)", arrayOf("id"))
+    private val createScenario = conn.prepareStatement("INSERT INTO scenarios (portfolio_id, repetitions, topology, workload_name, workload_fraction, allocation_policy, failure_frequency, interference) VALUES (?, ?, ?, ?, ?, ?, ?, ?)", arrayOf("id"))
 
     /**
      * Prepared statement for creating a run.
@@ -96,7 +96,7 @@ class DatabaseHelper(val conn: Connection) : Closeable {
         createScenario.setString(4, scenario.workload.name)
         createScenario.setDouble(5, scenario.workload.fraction)
         createScenario.setString(6, scenario.allocationPolicy)
-        createScenario.setBoolean(7, scenario.hasFailures)
+        createScenario.setDouble(7, scenario.failureFrequency)
         createScenario.setBoolean(8, scenario.hasInterference)
 
         val affectedRows = createScenario.executeUpdate()
diff --git a/opendc/opendc-experiments-sc20/src/test/kotlin/com/atlarge/opendc/experiments/sc20/Sc20IntegrationTest.kt b/opendc/opendc-experiments-sc20/src/test/kotlin/com/atlarge/opendc/experiments/sc20/Sc20IntegrationTest.kt
index 1edb7bc2..fd617115 100644
--- a/opendc/opendc-experiments-sc20/src/test/kotlin/com/atlarge/opendc/experiments/sc20/Sc20IntegrationTest.kt
+++ b/opendc/opendc-experiments-sc20/src/test/kotlin/com/atlarge/opendc/experiments/sc20/Sc20IntegrationTest.kt
@@ -102,7 +102,7 @@ class Sc20IntegrationTest {
 
             val failureDomain = if (failures) {
                 println("ENABLING failures")
-                createFailureDomain(seed, 24 * 7, bareMetalProvisioner, chan)
+                createFailureDomain(seed, 24.0 * 7, bareMetalProvisioner, chan)
             } else {
                 null
             }