title: How can I modify the Load Balancing behavior Jenkins uses to control slaves?
body: <p>We use Jenkins for our CI build system. We also use 'concurrent builds' so that Jenkins will build each change independently. This means we often have 5 or 6 builds of the same job running simultaneously. To accommodate this, we have 4 slaves each with 12 executors.</p>
  <p>The problem is that Jenkins doesn't really 'load balance' among its slaves. It tries to build  a job on the same slave that it previously built on (presumably to reduce the time syncing from source control). This is a problem because Jenkins will build all 6 instances of our build on the same slave (or more likely between 2 slaves). One build machine gets bogged down and runs very slowly while the rest of them sit idle.</p>
  <p>How do I configure the load balancing behavior of Jenkins, and how it controls its slaves?</p>