How to check dpdk version in linux
Consult the section on Enabling Additional Functionality for more information on the required changes. The setup commands and installed packages needed on various systems may be different. Please ensure that the latest patches are applied to third party libraries and software to avoid any known vulnerabilities. For DPDK builds using meson, the presence or absence of these dependencies will be automatically detected enabling or disabling the relevant components appropriately.
In each case, the relevant library development package -devel or -dev is needed to build the DPDK components. Network Interface Controller Drivers. The kernel version required is based on the oldest long term stable kernel available at kernel. The version can be checked using the ldd --version command. Hugepage support is required for the large memory pool allocation used for packet buffers the HUGETLBFS option must be enabled in the running kernel as indicated the previous section.
By using hugepage allocations, performance is increased since fewer pages are needed, and therefore less Translation Lookaside Buffers TLBs, high speed translation cacheswhich reduce the time it takes to translate a virtual page address to a physical page address. Without hugepages, high TLB miss rates would occur with the standard 4k page size, slowing performance.
The allocation of hugepages should be done at boot time or as soon as possible after system boot to prevent memory from being fragmented in physical memory. To reserve hugepages at boot time, a parameter is passed to the Linux kernel on the kernel command line.
For 2 MB pages, just pass the hugepages option to the kernel. For example, to reserve pages of 2 MB, use:. For other hugepage sizes, for example 1G pages, the size must be specified explicitly and can also be optionally set as the default hugepage size for the system. For example, to reserve 4G of hugepage memory in the form of four 1G pages, the following options should be passed to the kernel:.
If pse exists, 2M hugepages are supported; if pdpe1gb exists, 1G hugepages are supported. For bit applications, it is recommended to use 1 GB hugepages if the platform supports them. In the case of a dual-socket NUMA system, the number of hugepages reserved at boot time is generally divided equally between the two sockets on the assumption that sufficient memory is present on both sockets. For 2 MB pages, there is also the option of allocating hugepages after the system has booted.
For a single-node system, the command to use is as follows assuming that pages are required :. For 1G pages, it is not possible to reserve the hugepage memory after the system has booted. Once the hugepage memory is reserved, to make the memory available for DPDK use, perform the following steps:. Data Plane Development Kit Getting Started Guide for Linux 1.
Introduction 2. System Requirements 2.Data Plane Development Kit Getting Started Guide for Linux 1. Introduction 2. System Requirements 3. Linux Drivers 6. Compiling and Running Sample Applications 7. EAL parameters 8. Enabling Additional Functionality 9. Quick Start Setup Script Introduction 1. Documentation Roadmap 2. System Requirements 2. Compilation of the DPDK 2. Obtain the cross tool chain 4. Unzip and add into the PATH 4.
Getting the prerequisite library 4. Augment the cross toolchain with NUMA support 4. Linux Drivers 5. UIO 5. VFIO 5. Bifurcated Driver 5.
3. Compiling the DPDK Target from Source
Compiling and Running Sample Applications 6. Compiling a Sample Application 6. Running a Sample Application 6. Additional Sample Applications 6. Additional Test Applications 7. EAL parameters 7.The DPDK is a set of libraries and drivers for fast packet processing and runs mostly in Linux userland. The EAL hides the details of the environment and provides a standard programming interface. Common use cases are around special solutions for instance network function virtualization and advanced high-throughput network switching.
The DPDK uses a run-to-completion model for fast data plane performance and accesses devices via polling to eliminate the latency of interrupt processing at the tradeoff of higher cpu consumption. It was designed to run on any processors. Ubuntu currently supports DPDK version 2. This package is currently compiled for the lowest possible CPU requirements. But a lot of those are disabled by default in the upstream Project as they are not yet in a stable state.
On top it experimentally enables the following two PMD drivers as they represent virtual devices that are very accessible to end users. The newer vfio-pci requires that you activate the following kernel parameters to enable iommu. On top for vfio-pci you then have to configure and assign the iommu groups accordingly. Note: In virtio based environment it is enough to "unassign" devices from the kernel driver.
Since DPDK can work directly on virtio devices it is not required to assign e. The package dpdk provides init scripts that ease configuration of device assignment and huge pages. It also makes them persistent accross reboots. Therefore hugepages have to be configured in your system. If not this can be a great simplification to get DPDK configured for your needs.
As shown this supports configuring 2M and the larger 1G hugepages or a mix of both. It will make sure there are proper hugetlbfs mountpoints for DPDK to find both sizes no matter what your default huge page size is.
The config file itself holds more details on certain corner cases and a few hints if you want to allocate hugepages manually via a kernel parameter. It depends on your needs which size you want - 1G pages are certainly more effective regarding TLB pressure.
4. Cross compile DPDK for ARM64
But there were reports of them fragmenting inside the DPDK memory alloactions. Also it can be harder to grab enough free space to set up a certain amount of 1G pages later in the lifecycle of a system.It is designed to get customers up and running quickly. The document describes how to compile and run a DPDK application in a Linux application linux environment, without going deeply into detail. Release Notes: Provides release-specific information, including supported features, limitations, fixed issues, known issues and so on.
Also, provides the answers to frequently asked questions in FAQ format. Getting Started Guide this document : Describes how to install and configure the DPDK; designed to get users up and running quickly with the software. Sample Applications User Guide: Describes a set of sample applications.
Each chapter describes a sample application that showcases specific functionality and provides instructions on how to compile, run and use the sample application. Data Plane Development Kit Getting Started Guide for Linux 1.
Introduction 1. Documentation Roadmap 2. System Requirements 3.
Linux Drivers 6. Compiling and Running Sample Applications 7. EAL parameters 8. Enabling Additional Functionality 9. Quick Start Setup Script Introduction View page source. Documentation Roadmap The following is a list of DPDK documents in the suggested reading order: Release Notes: Provides release-specific information, including supported features, limitations, fixed issues, known issues and so on.It is always recommended to check and get the latest compiler tool from the page and use it to generate better code.
As of this writing 8. Meson depends on pkgconfig to find the dependencies.
The package pkg-config-aarchlinux-gnu is required for aarch To install it in Ubuntu:. To configure a build, choose one of the target configurations, like armdpaa-linux-gcc and armthunderx-linux-gcc. To compile for non-NUMA targets, without compiling the kernel modules, use the following command:. Data Plane Development Kit Getting Started Guide for Linux 1. Introduction 2.
System Requirements 3. Obtain the cross tool chain 4. Unzip and add into the PATH 4.
Getting Started Guide for Linux
Getting the prerequisite library 4. Augment the cross toolchain with NUMA support 4. Linux Drivers 6. Compiling and Running Sample Applications 7. EAL parameters 8. Enabling Additional Functionality 9. Quick Start Setup Script The most recent patches and enhancements are available for download.
Some packet processing functions have been benchmarked up to hundreds million frames per second, using byte packets with a PCIe NIC.
Learn More. Event Update. Our event planning is taking longer than usual, given the current situation with the Novel CoronaVirus. We are working diligently to solidify plans for events throughout and will have information soon. Join the Organizations Supporting DPDK The work of developing libraries for fast packet processing could not happen without the generous support of our members.
Upcoming Events There are no upcoming events at this time.This happens either because you dont have the proper kernel headers installed version mismatch or if apt could not create proper symlinks for you.
You need to be root to run this script. The interface was not bound to the driver because the interface is active. Bring down the interface and re-try and everything should be okay. To manage cpu-scaling, you need to install the cpufrequtils package. Follow the instructions on the Debian wiki here. The available options are userspace conservative powersave ondemand performance.
DPDK will use the 'performance' option and set the processor at the highest frequency. DPDK documentation uses the following way to do it:. This happens because you might not have sufficient number of cores. You might have to set the core mask appropriately.
Hugepages is an important part of the DPDK setup. The perfect values for hugepages really depends on various things CPU, memory etc. You can setup hugepages atleast two different ways. Toggle navigation Bandla's Blag. Engineering Security. Not modifying.