jedis vs scala-redis in mget

PerfTests.scala

package com.redis

import redis.clients.jedis._
object PerfTests {
  def keys = (0 until 20000) map { "somekey:" + _ }
  def populate() {
    val jedis = new Jedis("localhost")
    keys foreach { n =>
      jedis.set("somekey:"+n, n.toString)
    }
  }
  def measure(what: String)(f: => Int) {
    val before = System.currentTimeMillis
    val size = f
    val after = System.currentTimeMillis
    println("["+what+"] response.size: "+size)
    println("["+what+"] "+(after - before) + " ms")
  }
  def jedis() {
    val jedis = new Jedis("localhost")
    measure("jedis") {
      val response = jedis.mget(keys :_*)
      response.size
    }
  }
  def scalaRedis() {
    val redis = new RedisClient("localhost", 6379)
    val _keys = keys
    measure("scalaRedis") {
      val response = redis.mget(_keys.head, _keys.tail :_*).getOrElse(List())
      response.size
    }
  }
  def main(args: Array[String]): Unit = {
    (1 until 10) foreach { n =>
      println("iteration: "+n)
      jedis()
      scalaRedis()
    }
  }
}

// Results
// iteration: 1
// [jedis] response.size: 20000
// [jedis] 298 ms
// [scalaRedis] response.size: 20000
// [scalaRedis] 831 ms
// iteration: 2
// [jedis] response.size: 20000
// [jedis] 50 ms
// [scalaRedis] response.size: 20000
// [scalaRedis] 117 ms
// iteration: 3
// [jedis] response.size: 20000
// [jedis] 45 ms
// [scalaRedis] response.size: 20000
// [scalaRedis] 128 ms
// iteration: 4
// [jedis] response.size: 20000
// [jedis] 37 ms
// [scalaRedis] response.size: 20000
// [scalaRedis] 155 ms
// iteration: 5
// [jedis] response.size: 20000
// [jedis] 35 ms
// [scalaRedis] response.size: 20000
// [scalaRedis] 112 ms
// iteration: 6
// [jedis] response.size: 20000
// [jedis] 41 ms
// [scalaRedis] response.size: 20000
// [scalaRedis] 122 ms
// iteration: 7
// [jedis] response.size: 20000
// [jedis] 36 ms
// [scalaRedis] response.size: 20000
// [scalaRedis] 132 ms
// iteration: 8
// [jedis] response.size: 20000
// [jedis] 37 ms
// [scalaRedis] response.size: 20000
// [scalaRedis] 127 ms
// iteration: 9
// [jedis] response.size: 20000
// [jedis] 41 ms
// [scalaRedis] response.size: 20000
// [scalaRedis] 126 ms