jenkinsci/jenkins — pull request #1367 by olivergondza (2014-08-13 21:45:47+00:00)
Title: Make queue item list caching period configurable.

With 400+ executors, I am seeing a lot of HTTP threads blocked at:
```
java.lang.Thread.State: BLOCKED (on object monitor)
at hudson.model.Queue.getItems(Queue.java:691)
- waiting to lock <0x000000040768ba18> (a hudson.model.Queue)
at hudson.model.Queue$CachedItemList.get(Queue.java:218)
at hudson.model.Queue.getApproximateItemsQuickly(Queue.java:721)
```