Recent Intel chips in combination with some aggressive power-saving driver techniques are known to cause sporadic system lockups, up to a minute long. This is an issue which can occur with or without Azul Platform Prime present but can be more noticeably manifest in the high-performance, low-latency applications commonly deployed in Azul Platform Prime environments.
This issue appears with RedHat Enterprise Linux 6.1 and its integrated Intel Idle Driver. The Intel Idle Driver aims to improve power efficiency but can lead to system lockups when run on some recent Intel CPUs (some Nehalems and Westmeres have been reported to have problems). Note that this issue does not occur on all Nehalem and Westmere processors.