No Forced Preemption (Server)

configname: CONFIG_PREEMPT_NONE

Preemption Model
└─>No Forced Preemption (Server)
In linux kernel since version 2.6.13 (release Date: 2005-08-28)  
This is the traditional Linux preemption model, geared towards
throughput. It will still provide good latencies most of the
time, but there are no guarantees and occasional longer delays
are possible.

Select this option if you are building a kernel for a server or
scientific/computation system, or if you want to maximize the
raw processing power of the kernel, irrespective of scheduling
latencies.