Polled mode applications such as the Storage Performance Development Kit (SPDK) NVMe over Fabrics target can demonstrate higher performance and efficiency compared to applications with a more traditional interrupt-driven threading model. But this performance and efficiency comes at a cost of increased CPU core utilization when the application is lightly loaded or idle. This talk will introduce a new SPDK scheduler framework which enables transferring work between CPU cores for purposes of shutting down or lowering frequency on cores when under-utilized. We will first describe the SPDK architecture for lightweight threads. Next, we will introduce the scheduler framework and how a scheduler module can collect metrics on the running lightweight threads to make scheduling decisions. Finally, we will share initial results comparing SPDK NVMe-oF target performance and CPU efficiency of a new scheduler module based on this framework with the default static scheduler.