1.. SPDX-License-Identifier: BSD-3-Clause 2 Copyright(c) 2018 Intel Corporation. 3 4EAL parameters 5============== 6 7This document contains a list of all EAL parameters. These parameters can be 8used by any DPDK application running on Linux. 9 10Common EAL parameters 11--------------------- 12 13The following EAL parameters are common to all platforms supported by DPDK. 14 15.. include:: eal_args.include.rst 16 17Linux-specific EAL parameters 18----------------------------- 19 20In addition to common EAL parameters, there are also Linux-specific EAL 21parameters. 22 23Device-related options 24~~~~~~~~~~~~~~~~~~~~~~ 25 26* ``--create-uio-dev`` 27 28 Create ``/dev/uioX`` files for devices bound to igb_uio kernel driver 29 (usually done by the igb_uio driver itself). 30 31* ``--vmware-tsc-map`` 32 33 Use VMware TSC map instead of native RDTSC. 34 35* ``--no-hpet`` 36 37 Do not use the HPET timer. 38 39* ``--vfio-intr <legacy|msi|msix>`` 40 41 Use specified interrupt mode for devices bound to VFIO kernel driver. 42 43Multiprocessing-related options 44~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 45 46* ``--file-prefix <prefix name>`` 47 48 Use a different shared data file prefix for a DPDK process. This option 49 allows running multiple independent DPDK primary/secondary processes under 50 different prefixes. 51 52Memory-related options 53~~~~~~~~~~~~~~~~~~~~~~ 54 55* ``--legacy-mem`` 56 57 Use legacy DPDK memory allocation mode. 58 59* ``--socket-mem <amounts of memory per socket>`` 60 61 Preallocate specified amounts of memory per socket. The parameter is a 62 comma-separated list of values. For example:: 63 64 --socket-mem 1024,2048 65 66 This will allocate 1 gigabyte of memory on socket 0, and 2048 megabytes of 67 memory on socket 1. 68 69* ``--socket-limit <amounts of memory per socket>`` 70 71 Place a per-socket upper limit on memory use (non-legacy memory mode only). 72 0 will disable the limit for a particular socket. 73 74* ``--single-file-segments`` 75 76 Create fewer files in hugetlbfs (non-legacy mode only). 77 78* ``--huge-dir <path to hugetlbfs directory>`` 79 80 Use specified hugetlbfs directory instead of autodetected ones. 81 82* ``--huge-unlink`` 83 84 Unlink hugepage files after creating them (implies no secondary process 85 support). 86 87* ``--match-allocations`` 88 89 Free hugepages back to system exactly as they were originally allocated. 90 91Other options 92~~~~~~~~~~~~~ 93 94* ``--syslog <syslog facility>`` 95 96 Set syslog facility. Valid syslog facilities are:: 97 98 auth 99 cron 100 daemon 101 ftp 102 kern 103 lpr 104 mail 105 news 106 syslog 107 user 108 uucp 109 local0 110 local1 111 local2 112 local3 113 local4 114 local5 115 local6 116 local7 117