title: Running Redis with Docker (performance issue)
body: <p>Has anyone else seen performance issues with running Redis in a Docker container environment?</p>
  
  <p>Here's what I've noticed...
  Setup A: Local machine, traditional Redis install
  Setup B: Local machine, using canonical Redis image <a href="https://registry.hub.docker.com/_/redis/" rel="noreferrer">https://registry.hub.docker.com/_/redis/</a></p>
  
  <p>I've got an identical HTTP server on my local machine that fires as fast as the request/response cycle will allow.</p>
  
  <p>Observations:
  - A can sustain approximately 2X the throughput of B.
  - B performs identical to A when you benchmark (from within the container)</p>
  
  <p>So, this leads me to believe that B is slower than A because of a networking issue: i.e. the networking relays introduced by running software in a virtualized environment are creating significant performance issues...</p>
  
  <p>Just wondering if anyone else has noticed anything like this?</p>