500k docs inserted into mongoDB

package com.sbs.hotins

import com.mongodb.casbah.Imports._
import scala.actors.Actor

object HotInsertApp {
  import HotInsert._
  def main(args: Array[String]):Unit = time(test3)
}


object HotInsert {
  val mongo = MongoConnection("localhost",27017)("HotInsDB")("HotTest")

  val data:Stream[() => DBObject] =
    (() => MongoDBObject("_id" -> new ObjectId,
             "Data" -> "X" * 20)) #:: data

  def time[R](block: => R): R = {
    val t0 = System.nanoTime()
    val result = block    // call-by-name
    val t1 = System.nanoTime()
    println("Elapsed time: %f secs".format((t1.toFloat - t0) / 1000000000))
    result
  }

  def test1: Unit = {
    (1 to 500000) foreach ( _ =>
      mongo.insert(MongoDBObject("_id" -> new ObjectId,
                 "Data" -> "X" * 20))
    )
  }

  def test2: Unit = {
    Range(1, 500000, 250).foreach(_ =>
      mongo.insert(data.map(_.apply).take(250).toList))
  }

  def test3: Unit = {
    Range(1, 500000, 250) foreach(s =>
      new Actor { override def act() = {
    mongo.insert(data.map(_.apply).take(250).toList)}}.start)
  }
}


/*
Results for test3:

~/Projects/MongoDB/hotinsertioncontest  ᐅ sbt run
[info] Loading global plugins from /home/eof/.sbt/plugins
[info] Loading project definition from /home/eof/Projects/MongoDB/hotinsertioncontest/project
[info] Set current project to HotInsertionContest (in build file:/home/eof/Projects/MongoDB/hotinsertioncontest/)

Multiple main classes detected, select one to run:

 [1] JettyLauncher
 [2] com.sbs.hotins.HotInsertApp

Enter number: 2

[info] Running com.sbs.hotins.HotInsertApp
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Elapsed time: 0,108003 secs
[success] Total time: 7 s, completed 09-sep-2012 20:18:39
*/