Were are struggling with our builds that are occasionally jamming in between the last build step and first post-build action. The more builds we are running in parallel the more likely we'll face this issue. We are running Jenkins 1.454 and "execute concurrent builds" option to run multiple instances of the same job. Our master is Windows server 2008 and so are the slaves. All the builds are happening on the slaves, master is just dispatching the jobs. Slaves are virtual machines. We are not running out of memory.

Any help is appreciated. For example what log recorders we could use to debug this issue? Jenkins default log doesn't provide any further info and neither does the console log.