With traditional interrupt-driven I/O, the CPU is either doing something useful or waiting. With Storage Performance Development Kit (SPDK) polled I/O the CPU is always 100% busy so traditional profiling techniques don’t work. Intel® VTune™ Amplifier can identify “empty” spinning so you can balance core loading, balance SSDs, see the throughput per device, PCIe traffic breakdown and lots of good stuff. Learn how to use Intel VTune Amplifier to optimize your I/O performance.
Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.
Notice revision #20110804