ParNew GC (Allocation Failure) frequent

env: scala:2.11 colossus:0.8.2

run code

object ScenesServer {
  def main(args: Array[String]): Unit = {
    implicit val actorSystem = ActorSystem()
    implicit val io = IOSystem()

    Server.start("hello-world", 9000){ worker => new HelloInitializer(worker) }
  }
}

class HelloInitializer(worker: WorkerRef) extends Initializer(worker) {

  def onConnect = context => new HelloService(context)

}

class HelloService(context: ServerContext) extends HttpService(context) {
  def handle = {
    case request @ Get on Root / "hello" => {
      Callback.successful(request.ok("Hello World!"))
    }
  }
}

when i start this server with jvm opts

-XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -Xloggc:/tmp/gc/gc.log -XX:+PrintGCDateStamps -XX:+PrintGCDetails -XX:+PrintTenuringDistribution

i see Minor GC often enough

2017-05-26T11:12:59.304+0800: 2314.736: [GC (Allocation Failure) 2017-05-26T11:12:59.304+0800: 2314.736: [ParNew
Desired survivor size 104857600 bytes, new threshold 15 (max 15)
: 1655366K->18053K(1843200K), 0.0340171 secs] 1655366K->18053K(3891200K), 0.0342093 secs] [Times: user=0.24 sys=0.00, real=0.04 secs]

2017-05-26T11:15:54.036+0800: 2489.467: [GC (Allocation Failure) 2017-05-26T11:15:54.036+0800: 2489.467: [ParNew
Desired survivor size 104857600 bytes, new threshold 15 (max 15)
: 1656453K->18863K(1843200K), 0.0368496 secs] 1656453K->18863K(3891200K), 0.0370190 secs] [Times: user=0.28 sys=0.00, real=0.03 secs]

2017-05-26T11:19:14.393+0800: 2689.824: [GC (Allocation Failure) 2017-05-26T11:19:14.393+0800: 2689.824: [ParNew
Desired survivor size 104857600 bytes, new threshold 15 (max 15)
: 1657263K->17895K(1843200K), 0.0507917 secs] 1657263K->22454K(3891200K), 0.0509915 secs] [Times: user=0.24 sys=0.01, real=0.06 secs]

it look like apply 100m memory and Allocation Failure and then trigger gc maybe about akka actor?

could you give me some suggestions ？

tumblr / colossus

ParNew GC (Allocation Failure) frequent #510