Renamed input files and internally server is changed to task (#246)

* Updated SimTrace to use a single ArrayDeque instead of three separate lists for deadline, cpuUsage, and coreCount

* Renamed input files to tasks.parquet and fragments.parquet. Renamed server to task. OpenDC nows exports tasks.parquet instead of server.parquet

17 files changed, 59 insertions, 59 deletions

diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/ComputeScheduler.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/ComputeScheduler.kt
index 0ccaf991..42de9ebc 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/ComputeScheduler.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/ComputeScheduler.kt
@@ -22,12 +22,12 @@
 
 package org.opendc.compute.service.scheduler
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.ComputeService
 import org.opendc.compute.service.HostView
 
 /**
- * A generic scheduler interface used by the [ComputeService] to select hosts to place [Server]s on.
+ * A generic scheduler interface used by the [ComputeService] to select hosts to place [Task]s on.
  */
 public interface ComputeScheduler {
     /**
@@ -41,10 +41,10 @@ public interface ComputeScheduler {
     public fun removeHost(host: HostView)
 
     /**
-     * Select a host for the specified [server].
+     * Select a host for the specified [task].
      *
-     * @param server The server to select a host for.
+     * @param task The server to select a host for.
      * @return The host to schedule the server on or `null` if no server is available.
      */
-    public fun select(server: Server): HostView?
+    public fun select(task: Task): HostView?
 }
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/FilterScheduler.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/FilterScheduler.kt
index 41118386..772a470d 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/FilterScheduler.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/FilterScheduler.kt
@@ -22,7 +22,7 @@
 
 package org.opendc.compute.service.scheduler
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 import org.opendc.compute.service.scheduler.filters.HostFilter
 import org.opendc.compute.service.scheduler.weights.HostWeigher
@@ -32,7 +32,7 @@ import kotlin.math.min
 
 /**
  * A [ComputeScheduler] implementation that uses filtering and weighing passes to select
- * the host to schedule a [Server] on.
+ * the host to schedule a [Task] on.
  *
  * This implementation is based on the filter scheduler from OpenStack Nova.
  * See: https://docs.openstack.org/nova/latest/user/filter-scheduler.html
@@ -65,13 +65,13 @@ public class FilterScheduler(
         hosts.remove(host)
     }
 
-    override fun select(server: Server): HostView? {
+    override fun select(task: Task): HostView? {
         val hosts = hosts
-        val filteredHosts = hosts.filter { host -> filters.all { filter -> filter.test(host, server) } }
+        val filteredHosts = hosts.filter { host -> filters.all { filter -> filter.test(host, task) } }
 
         val subset =
             if (weighers.isNotEmpty()) {
-                val results = weighers.map { it.getWeights(filteredHosts, server) }
+                val results = weighers.map { it.getWeights(filteredHosts, task) }
                 val weights = DoubleArray(filteredHosts.size)
 
                 for (result in results) {
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/ReplayScheduler.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/ReplayScheduler.kt
index a6703c89..d1690ddf 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/ReplayScheduler.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/ReplayScheduler.kt
@@ -23,7 +23,7 @@
 package org.opendc.compute.service.scheduler
 
 import mu.KotlinLogging
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 
 /**
@@ -48,14 +48,14 @@ public class ReplayScheduler(private val vmPlacements: Map<String, String>) : Co
         hosts.remove(host)
     }
 
-    override fun select(server: Server): HostView? {
+    override fun select(task: Task): HostView? {
         val clusterName =
-            vmPlacements[server.name]
-                ?: throw IllegalStateException("Could not find placement data in VM placement file for VM ${server.name}")
+            vmPlacements[task.name]
+                ?: throw IllegalStateException("Could not find placement data in VM placement file for VM ${task.name}")
         val machinesInCluster = hosts.filter { it.host.name.contains(clusterName) }
 
         if (machinesInCluster.isEmpty()) {
-            logger.info { "Could not find any machines belonging to cluster $clusterName for image ${server.name}, assigning randomly." }
+            logger.info { "Could not find any machines belonging to cluster $clusterName for image ${task.name}, assigning randomly." }
             return hosts.maxByOrNull { it.availableMemory }
         }
 
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/ComputeFilter.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/ComputeFilter.kt
index dd707f60..2ad626f3 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/ComputeFilter.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/ComputeFilter.kt
@@ -22,7 +22,7 @@
 
 package org.opendc.compute.service.scheduler.filters
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 import org.opendc.compute.service.driver.HostState
 
@@ -32,7 +32,7 @@ import org.opendc.compute.service.driver.HostState
 public class ComputeFilter : HostFilter {
     override fun test(
         host: HostView,
-        server: Server,
+        task: Task,
     ): Boolean {
         val result = host.host.state == HostState.UP
         return result
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/DifferentHostFilter.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/DifferentHostFilter.kt
index df67a19f..ffafeaa9 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/DifferentHostFilter.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/DifferentHostFilter.kt
@@ -22,7 +22,7 @@
 
 package org.opendc.compute.service.scheduler.filters
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 import java.util.UUID
 
@@ -32,10 +32,10 @@ import java.util.UUID
 public class DifferentHostFilter : HostFilter {
     override fun test(
         host: HostView,
-        server: Server,
+        task: Task,
     ): Boolean {
         @Suppress("UNCHECKED_CAST")
-        val affinityUUIDs = server.meta["scheduler_hint:different_host"] as? Set<UUID> ?: return true
+        val affinityUUIDs = task.meta["scheduler_hint:different_host"] as? Set<UUID> ?: return true
         return host.host.instances.none { it.uid in affinityUUIDs }
     }
 }
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/HostFilter.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/HostFilter.kt
index 902c760e..f506127a 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/HostFilter.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/HostFilter.kt
@@ -22,7 +22,7 @@
 
 package org.opendc.compute.service.scheduler.filters
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 import org.opendc.compute.service.scheduler.FilterScheduler
 
@@ -32,10 +32,10 @@ import org.opendc.compute.service.scheduler.FilterScheduler
 public fun interface HostFilter {
     /**
      * Test whether the specified [host] should be included in the selection
-     * for scheduling the specified [server].
+     * for scheduling the specified [task].
      */
     public fun test(
         host: HostView,
-        server: Server,
+        task: Task,
     ): Boolean
 }
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/InstanceCountFilter.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/InstanceCountFilter.kt
index d9348802..7d5eb400 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/InstanceCountFilter.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/InstanceCountFilter.kt
@@ -22,7 +22,7 @@
 
 package org.opendc.compute.service.scheduler.filters
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 
 /**
@@ -33,7 +33,7 @@ import org.opendc.compute.service.HostView
 public class InstanceCountFilter(private val limit: Int) : HostFilter {
     override fun test(
         host: HostView,
-        server: Server,
+        task: Task,
     ): Boolean {
         return host.instanceCount < limit
     }
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/RamFilter.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/RamFilter.kt
index d8c3d540..0a28ccc6 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/RamFilter.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/RamFilter.kt
@@ -22,20 +22,20 @@
 
 package org.opendc.compute.service.scheduler.filters
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 
 /**
- * A [HostFilter] that filters hosts based on the memory requirements of a [Server] and the RAM available on the host.
+ * A [HostFilter] that filters hosts based on the memory requirements of a [Task] and the RAM available on the host.
  *
  * @param allocationRatio Virtual RAM to physical RAM allocation ratio.
  */
 public class RamFilter(private val allocationRatio: Double) : HostFilter {
     override fun test(
         host: HostView,
-        server: Server,
+        task: Task,
     ): Boolean {
-        val requestedMemory = server.flavor.memorySize
+        val requestedMemory = task.flavor.memorySize
         val availableMemory = host.availableMemory
         val memoryCapacity = host.host.model.memoryCapacity
 
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/SameHostFilter.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/SameHostFilter.kt
index 4c31c66a..d8634285 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/SameHostFilter.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/SameHostFilter.kt
@@ -22,7 +22,7 @@
 
 package org.opendc.compute.service.scheduler.filters
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 import java.util.UUID
 
@@ -32,10 +32,10 @@ import java.util.UUID
 public class SameHostFilter : HostFilter {
     override fun test(
         host: HostView,
-        server: Server,
+        task: Task,
     ): Boolean {
         @Suppress("UNCHECKED_CAST")
-        val affinityUUIDs = server.meta["scheduler_hint:same_host"] as? Set<UUID> ?: return true
+        val affinityUUIDs = task.meta["scheduler_hint:same_host"] as? Set<UUID> ?: return true
         return host.host.instances.any { it.uid in affinityUUIDs }
     }
 }
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/VCpuCapacityFilter.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/VCpuCapacityFilter.kt
index 01ece80e..f87658cd 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/VCpuCapacityFilter.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/VCpuCapacityFilter.kt
@@ -22,22 +22,22 @@
 
 package org.opendc.compute.service.scheduler.filters
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 
 /**
- * A [HostFilter] that filters hosts based on the vCPU speed requirements of a [Server] and the available
+ * A [HostFilter] that filters hosts based on the vCPU speed requirements of a [Task] and the available
  * capacity on the host.
  */
 public class VCpuCapacityFilter : HostFilter {
     override fun test(
         host: HostView,
-        server: Server,
+        task: Task,
     ): Boolean {
-        val requiredCapacity = server.flavor.meta["cpu-capacity"] as? Double
+        val requiredCapacity = task.flavor.meta["cpu-capacity"] as? Double
         val hostModel = host.host.model
         val availableCapacity = hostModel.cpuCapacity / hostModel.cpuCount
 
-        return requiredCapacity == null || availableCapacity >= (requiredCapacity / server.flavor.coreCount)
+        return requiredCapacity == null || availableCapacity >= (requiredCapacity / task.flavor.coreCount)
     }
 }
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/VCpuFilter.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/VCpuFilter.kt
index cefb3f7a..442e58f6 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/VCpuFilter.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/filters/VCpuFilter.kt
@@ -22,20 +22,20 @@
 
 package org.opendc.compute.service.scheduler.filters
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 
 /**
- * A [HostFilter] that filters hosts based on the vCPU requirements of a [Server] and the available vCPUs on the host.
+ * A [HostFilter] that filters hosts based on the vCPU requirements of a [Task] and the available vCPUs on the host.
  *
  * @param allocationRatio Virtual CPU to physical CPU allocation ratio.
  */
 public class VCpuFilter(private val allocationRatio: Double) : HostFilter {
     override fun test(
         host: HostView,
-        server: Server,
+        task: Task,
     ): Boolean {
-        val requested = server.flavor.coreCount
+        val requested = task.flavor.coreCount
         val totalCores = host.host.model.coreCount
         val limit = totalCores * allocationRatio
 
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/CoreRamWeigher.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/CoreRamWeigher.kt
index d6aafbc7..d84f5e68 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/CoreRamWeigher.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/CoreRamWeigher.kt
@@ -22,7 +22,7 @@
 
 package org.opendc.compute.service.scheduler.weights
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 
 /**
@@ -35,7 +35,7 @@ import org.opendc.compute.service.HostView
 public class CoreRamWeigher(override val multiplier: Double = 1.0) : HostWeigher {
     override fun getWeight(
         host: HostView,
-        server: Server,
+        task: Task,
     ): Double {
         return host.availableMemory.toDouble() / host.host.model.cpuCount
     }
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/HostWeigher.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/HostWeigher.kt
index 825cfff9..3f2c4123 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/HostWeigher.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/HostWeigher.kt
@@ -22,7 +22,7 @@
 
 package org.opendc.compute.service.scheduler.weights
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 import org.opendc.compute.service.scheduler.FilterScheduler
 
@@ -36,26 +36,26 @@ public interface HostWeigher {
     public val multiplier: Double
 
     /**
-     * Obtain the weight of the specified [host] when scheduling the specified [server].
+     * Obtain the weight of the specified [host] when scheduling the specified [task].
      */
     public fun getWeight(
         host: HostView,
-        server: Server,
+        task: Task,
     ): Double
 
     /**
-     * Obtain the weights for [hosts] when scheduling the specified [server].
+     * Obtain the weights for [hosts] when scheduling the specified [task].
      */
     public fun getWeights(
         hosts: List<HostView>,
-        server: Server,
+        task: Task,
     ): Result {
         val weights = DoubleArray(hosts.size)
         var min = Double.MAX_VALUE
         var max = Double.MIN_VALUE
 
         for ((i, host) in hosts.withIndex()) {
-            val weight = getWeight(host, server)
+            val weight = getWeight(host, task)
             weights[i] = weight
             min = kotlin.math.min(min, weight)
             max = kotlin.math.max(max, weight)
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/InstanceCountWeigher.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/InstanceCountWeigher.kt
index 9e0a9517..0789f109 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/InstanceCountWeigher.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/InstanceCountWeigher.kt
@@ -22,7 +22,7 @@
 
 package org.opendc.compute.service.scheduler.weights
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 
 /**
@@ -31,7 +31,7 @@ import org.opendc.compute.service.HostView
 public class InstanceCountWeigher(override val multiplier: Double = 1.0) : HostWeigher {
     override fun getWeight(
         host: HostView,
-        server: Server,
+        task: Task,
     ): Double {
         return host.instanceCount.toDouble()
     }
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/RamWeigher.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/RamWeigher.kt
index fca2e893..fb03d064 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/RamWeigher.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/RamWeigher.kt
@@ -22,7 +22,7 @@
 
 package org.opendc.compute.service.scheduler.weights
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 
 /**
@@ -34,7 +34,7 @@ import org.opendc.compute.service.HostView
 public class RamWeigher(override val multiplier: Double = 1.0) : HostWeigher {
     override fun getWeight(
         host: HostView,
-        server: Server,
+        task: Task,
     ): Double {
         return host.availableMemory.toDouble()
     }
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/VCpuCapacityWeigher.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/VCpuCapacityWeigher.kt
index 242660c3..6d1482ff 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/VCpuCapacityWeigher.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/VCpuCapacityWeigher.kt
@@ -22,7 +22,7 @@
 
 package org.opendc.compute.service.scheduler.weights
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 
 /**
@@ -31,11 +31,11 @@ import org.opendc.compute.service.HostView
 public class VCpuCapacityWeigher(override val multiplier: Double = 1.0) : HostWeigher {
     override fun getWeight(
         host: HostView,
-        server: Server,
+        task: Task,
     ): Double {
         val model = host.host.model
-        val requiredCapacity = server.flavor.meta["cpu-capacity"] as? Double ?: 0.0
-        return model.cpuCapacity / model.cpuCount - requiredCapacity / server.flavor.coreCount
+        val requiredCapacity = task.flavor.meta["cpu-capacity"] as? Double ?: 0.0
+        return model.cpuCapacity / model.cpuCount - requiredCapacity / task.flavor.coreCount
     }
 
     override fun toString(): String = "VCpuWeigher"
diff --git a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/VCpuWeigher.kt b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/VCpuWeigher.kt
index be93458f..dfc30b54 100644
--- a/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/VCpuWeigher.kt
+++ b/opendc-compute/opendc-compute-service/src/main/kotlin/org/opendc/compute/service/scheduler/weights/VCpuWeigher.kt
@@ -22,7 +22,7 @@
 
 package org.opendc.compute.service.scheduler.weights
 
-import org.opendc.compute.api.Server
+import org.opendc.compute.api.Task
 import org.opendc.compute.service.HostView
 
 /**
@@ -37,7 +37,7 @@ public class VCpuWeigher(private val allocationRatio: Double, override val multi
 
     override fun getWeight(
         host: HostView,
-        server: Server,
+        task: Task,
     ): Double {
         return host.host.model.cpuCount * allocationRatio - host.provisionedCores
     }