On RHEL 6, if CloudBees Build Acceleration services are started from a shell (as opposed to at boot time), you might encounter errors such as
java.lang.OutOfMemoryError: unable to create new native thread
This type of error occurs because RHEL 6 greatly decreased the default maximum number of threads per user.
As a workaround, comment out the nproc line in the /etc/security/limits.d/90-nproc.conf file.