In the DPDK, if no packet is received after polling,
speculative sleeps can be triggered according the strategies defined by the user space application.
+Per-core Turbo Boost
+--------------------
+
+Individual cores can be allowed to enter a Turbo Boost state on a per-core
+basis. This is achieved by enabling Turbo Boost Technology in the BIOS, then
+looping through the relevant cores and enabling/disabling Turbo Boost on each
+core.
+
API Overview of the Power Library
---------------------------------
* **Freq set**: Prompt the kernel to set the frequency for the specific lcore.
+* **Enable turbo**: Prompt the kernel to enable Turbo Boost for the specific lcore.
+
+* **Disable turbo**: Prompt the kernel to disable Turbo Boost for the specific lcore.
+
User Cases
----------