Overview -------- ktune provides the ktune service, which sets several kernel tuning parameters to values suitable for certain system profiles. Currently, the only profile provided is for large-memory systems running disk and network-intensive applications. These settings do not override settings in /etc/sysctl.conf or on the kernel command line. ktune may harm performance on some systems and workloads, so it should be tested under production-like conditions prior to production use. If ktune is found to harm performance, the settings may be reverted without rebooting by stopping the ktune service. Using ktune ----------- To start ktune you can start the service with the service command: service ktune start If you want to enable the service in the system, use the chkconfig command: chkconfig ktune on More Information ---------------- Please have a look at /etc/sysconfig/ktune and /etc/sysctl.ktune for tuning parameters.