Sleepy Intel Ice Lake Xeons Take Longer to Ramp Up Frequency Than Expected

A recent patch to the Linux kernel (via Phoronix) points to an interesting problem with Intel’s nearly-mythical 10nm+ Ice Lake Xeon processors: The CPUs take longer than expected to return to normal frequencies after exiting certain sleep states, which then impacts performance consistency due to ‘uncertain’ CPU clock rates. The severity of the issue isn’t […]