title: What does OpenJDK JMH "score error" exactly mean?
body: <p>I am using <a href="http://openjdk.java.net/projects/code-tools/jmh/">http://openjdk.java.net/projects/code-tools/jmh/</a> for benchmarking and i get a result like:</p>
  
  <p><pre>
  Benchmark                         Mode   Samples        Score  Score error    Units
  o.a.f.c.j.b.TestClass.test1       avgt         5  2372870,600   210897,743    us/op
  o.a.f.c.j.b.TestClass.test2       avgt         5  2079931,850   394727,671    us/op
  o.a.f.c.j.b.TestClass.test3       avgt         5    26585,818    21105,739    us/op
  o.a.f.c.j.b.TestClass.test4       avgt         5    19113,230     8012,852    us/op
  o.a.f.c.j.b.TestClass.test5       avgt         5     2586,413     1949,487    us/op
  o.a.f.c.j.b.TestClass.test6       avgt         5     1942,963     1619,967    us/op
  o.a.f.c.j.b.TestClass.test7       avgt         5      233,902       73,861    us/op
  o.a.f.c.j.b.TestClass.test8       avgt         5      191,970      126,682    us/op
  </Pre></p>
  
  <p>What does the column "Score error" exactly mean and how to interpret it?</p>