title: How to optimize performance for a docker container?
body: <p>I tested redis container based on.
  <a href="https://index.docker.io/u/dockerfile/redis/" rel="noreferrer">https://index.docker.io/u/dockerfile/redis/</a></p>
  
  <p>With same redis-benchmark, redis-server runs inside a container much slower, than run on hosted OS, the actual statistics shown below. ( The first benchmark is for a docker container )</p>
  
  <p>So, is there a way to optimize the performance for a docker container?</p>
  
  <pre><code>vagrant@precise64:/tmp$ redis-benchmark -p 49153 -q -n 100000
  PING (inline): 5607.27 requests per second
  PING: 6721.79 requests per second
  MSET (10 keys): 6085.69 requests per second
  SET: 6288.91 requests per second
  GET: 6627.78 requests per second
  INCR: 6454.11 requests per second
  LPUSH: 6449.12 requests per second
  LPOP: 5355.90 requests per second
  SADD: 6237.91 requests per second
  SPOP: 6794.40 requests per second
  LPUSH (again, in order to bench LRANGE): 6089.76 requests per second
  LRANGE (first 100 elements): 6000.24 requests per second
  LRANGE (first 300 elements): 4660.70 requests per second
  LRANGE (first 450 elements): 4276.79 requests per second
  LRANGE (first 600 elements): 3710.85 requests per second
  
  vagrant@precise64:/tmp$
  vagrant@precise64:/tmp$ sudo /etc/init.d/redis-server start
  Starting redis-server: redis-server.
  vagrant@precise64:/tmp$ redis-benchmark -q -n 100000
  PING (inline): 19357.34 requests per second
  PING: 19175.46 requests per second
  MSET (10 keys): 16697.28 requests per second
  SET: 19146.08 requests per second
  GET: 19175.46 requests per second
  INCR: 19135.09 requests per second
  LPUSH: 19168.10 requests per second
  LPOP: 14976.79 requests per second
  SADD: 16638.93 requests per second
  SPOP: 18079.91 requests per second
  LPUSH (again, in order to bench LRANGE): 18268.18 requests per second
  LRANGE (first 100 elements): 16136.84 requests per second
  LRANGE (first 300 elements): 11528.71 requests per second
  LRANGE (first 450 elements): 9237.88 requests per second
  LRANGE (first 600 elements): 8864.46 requests per second
  </code></pre>