![dpdk intel c compiler dpdk intel c compiler](https://image.slidesharecdn.com/430rev3-rmenon-ocardona-makingnetworkappsscreamwindows-dpdkmeetup20180320-180326202927/95/making-networking-apps-scream-on-windows-with-dpdk-1-638.jpg)
On my system, the following interfaces are available. Now, we can take a look at our interfaces by selecting the option 23. The script then reserves the Hugepage memory and makes it available to DPDK at the mount point /mnt/huge.
![dpdk intel c compiler dpdk intel c compiler](https://ars.els-cdn.com/content/image/1-s2.0-S0140366420318521-gr8.jpg)
We use the setup HugePages for a NUMA system option and reserve 1024 pages. The usage of Hugepages improves performance due to the reduced number of TLB misses. Next, we have to set up the Hugepages which DPDK uses for allocating space for the packet buffers. To load the module, we select the insert IGB UIO module option. It is mentioned in the dpdk mailing list that the IGB UIO module should work for all the cases, but the other two modules ( vfio and uio_pci_generic) have a few restrictions. I have tried the other two modules but could not successfully bind them to the network interfaces. I am using the IGB UIO module for this tutorial. Now, we can load the kernel module for the network interfaces. It starts building, and on completion, we are presented with the following screen.
![dpdk intel c compiler dpdk intel c compiler](https://s3.manualzz.com/store/data/032897764_1-aeef127db81ff4caa6532f3dd2b2bcd0.png)
Since it is an x86-64 architecture, I have selected the x86_64-native-linuxapp-gcc build (option 15). Note that it is possible to compile and set up the environment manually, but in this tutorial, we are using the script. In this directory, a setup script (dpdk-setup.sh) is present which automates most of the steps required to set up the DPDK environment. On extracting the folder, we can go into the usertools/ directory. System Requirementsīefore we move on to the installation of DPDK, our system needs to have a few required tools, and libraries.Ī more complete set of prerequisites are present at requirements. Similar steps can be followed in VirtualBox. On VMWare, we can add network interfaces by adding network adapters in the virtual machine’s settings page. My setup is a Ubuntu 16.04.06 64-bit machine running as a VM with two network interfaces. In this tutorial, we are installing the DPDK 18.11.2 (Stable) version.
#DPDK INTEL C COMPILER DRIVER#
Note that we must first ensure that no other driver is controlling the device before it is added to the bind file ( manual-driver-binding). To unbind a device from a driver, we must write the bus id of the device to the unbind file and to bind the device a kernel driver we must write the bus id of the device to the bind file. This binding/unbinding is carried out by utilizing a feature of the Linux kernel where every driver has bind and unbind files associated with it.
#DPDK INTEL C COMPILER DRIVERS#
To move the control of the NICs to the userspace applications, we must first unbind them from the kernel drivers and bind them to the drivers provided by DPDK. This mechanism is what Intel DPDK utilizes to allow the user applications to communicate directly with the network devices.ĭPDK provides a framework which makes many tasks essential to core networks, such as flow classification, traffic metering, and QoS management, very simple to handle. This shift in control gives us a significant performance boost as there is no more overhead due to the Linux kernel. The mechanism requires us to move control of the Ethernet hardware directly into the userspace. To get around the bottleneck, one mechanism to allow for faster processing involves a technique called “kernel bypass.” This technique, as the name suggests, involves bypassing the kernel completely. However, the kernel is unable to process the packets at such rates, thereby becoming the bottleneck. This delay means that the interface is handling 8.15 million packets per second. A 100Gb interface drops the time further to around 120ns. Kernel BypassĪ typical modern NIC can handle a 10Gb throughput, which translates to around 1,230ns between two 1538-byte packet ( LWN). These steps involve much overhead due to the various system calls, context switches, and interrupt handling in the kernel. First, the packet, on arrival, is placed in the Rx/Tx queues of the NIC, then it is passed to the ring buffers from where the socket finally reads it and passes the data to the application running in the user space.
![dpdk intel c compiler dpdk intel c compiler](https://www.intel.com/content/dam/develop/external/us/en/images/compile-sample-app-4-611930.jpg)
This performance drop is mainly due to the number of levels the packets has to pass through before it is available to the user application. The current Linux network stack, although very capable for general purpose applications, is unable to handle high throughputs required in applications such as the mobile core network processing. A Look into Intel DPDK and a Basic Forwarder