Diagnosing preemption bug

limits.hcl

client {
  cpu_total_compute = 1000
  memory_total_mb   = 1000
}

preempt-hi.nomad

job "hipri" {
  datacenters = ["dc1"]
  priority    = 98

  group "sleepy" {
    count = 1

    task "sleepy" {
      driver = "docker"

      config {
        image   = "alpine:3"
        command = "sleep"
        args    = ["100000"]
        #command = "/bin/sh"
        #args    = ["-c", "echo ${attr.unique.network.ip-address}"]
      }

      resources {
        cpu    = 500
        memory = 500
      }
    }
  }
}

preempt-lo.nomad

job "lowpri" {
  datacenters = ["dc1"]
  priority    = 1

  group "sleepy" {
    count = 3

    task "sleepy" {
      driver = "docker"

      config {
        image   = "alpine:3"
        command = "sleep"
        args    = ["100000"]
        #command = "/bin/sh"
        #args    = ["-c", "echo ${attr.unique.network.ip-address}"]
      }

      resources {
        cpu    = 300
        memory = 300
      }
    }
  }
}

preempt.hcl

server {
  default_scheduler_config {
    memory_oversubscription_enabled = false

    preemption_config {
      batch_scheduler_enabled    = true
      system_scheduler_enabled   = true
      service_scheduler_enabled  = true
      sysbatch_scheduler_enabled = true
    }
  }
}