Designed for Multi-CoreProcessors Thesesingle-port Adapter provide high-performing, single-port Gigabit connectivityin a multi-core platform aswell as in a virtualized environment. In a multi-coreplatform, the adapters support different technologies such as multiple queues,receive-side scaling, MSI-X, and Low Latency Interrupts, that help inaccelerating the data across the platform, thereby improving applicationresponse times. The I/Otechnologies on a multi-core platform make use of the multiple queues andmultiple interrupt vectors available on the network controller. These queuesand interrupt vectors help in load balancing the data and interrupts amongstthemselves in order to lower the load on the processors and improve overallsystem performance. For example, depending upon the latency sensitivity of thedata, the low level latency interrupts feature can bypass the time interval forspecific TCP ports or for flagged packets to give certain types of data streamsthe least amount of latency to the application. Optimized forVirtualization TheLR-LINK LREC9260PF-LX Single-Port Ethernet Adapter showcase the latestvirtualization technology calledIntel Virtualization Technology for Connectivity(IntelVTfor Connectivity).IntelVT for Connectivity is a suite of hardware assiststhat improve overall system performance by lowering the I/O overhead in avirtualized environment. This optimizes CPU usage, reduces system latency, andimproves I/O through- put.IntelVT for Connectivity includes: VirtualMachine Device Queues (VMDq) Intel I/OAcceleration Technology Use ofmulti-port adapters in a virtualized environment is very important because ofthe need to provide redundancy and data connectivity for theapplications/workloads in the virtual machines. Due to slot limitations and theneed for redundancy and data connectivity, it is recommended that a virtualizedphysical server needs at least six GbE ports to satisfy the I/O requirementdemands. Virtual MachineDevice queues (VMDq) VMDqreduces I/O overhead created by the hypervisor in a virtualized server byperforming data sorting and coalescing in the network silicon.2 VMDq technologymakes use of multiple queues in the network controller. As data packets enterthe network adapter, they are sorted, and packets traveling to the samedestination (or virtual machine) get grouped together in a single queue. Thepackets are then sent to the hypervisor, which directs them to their respectivevirtual machines. Relieving the hypervisor of packet filtering and sortingimproves overall CPU usage and throughput levels. LR-LINK LREC9260PFPCIe Gigabit adapter provides improved performance with the next-generationVMDq technology, which includes features such as loop back functionality forinter-VM communication, priority-weighted bandwidth management, and doublingthe number of data queues per port from four to eight. It now also supportsmulticast and broadcast data on a virtualized server.. Intel I/OAcceleration Technology Intel I/OAcceleration Technology (Intel I/OAT) is a suite of features that improves dataacceleration across the platform, from networking devices to the chipset andprocessors, which help to improve system performance and application responsetimes. The different features include multiple queues and receive-side scaling,Direct Cache Access (DCA), MSI-X, Low-Latency Interrupts, Receive Side Scaling(RSS), and others. Using multiple queues and receive-side scaling, a DMA enginemoves data using the chipset instead of the CPU. DCA enables the adapter topre-fetch data from the memory cache, thereby avoiding cache misses andimproving application response times. MSI-X helps in load-balancing I/Ointerrupts across multiple processor cores, and Low Latency Interrupts canprovide certain data streams a non-modulated path directly to the application.RSS directs the interrupts to a specific processor core based on theapplications address. |