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 52* ``--base-virtaddr <address>`` 53 54 Attempt to use a different starting address for all memory maps of the 55 primary DPDK process. This can be helpful if secondary processes cannot 56 start due to conflicts in address map. 57 58Memory-related options 59~~~~~~~~~~~~~~~~~~~~~~ 60 61* ``--legacy-mem`` 62 63 Use legacy DPDK memory allocation mode. 64 65* ``--socket-mem <amounts of memory per socket>`` 66 67 Preallocate specified amounts of memory per socket. The parameter is a 68 comma-separated list of values. For example:: 69 70 --socket-mem 1024,2048 71 72 This will allocate 1 gigabyte of memory on socket 0, and 2048 megabytes of 73 memory on socket 1. 74 75* ``--socket-limit <amounts of memory per socket>`` 76 77 Place a per-socket upper limit on memory use (non-legacy memory mode only). 78 0 will disable the limit for a particular socket. 79 80* ``--single-file-segments`` 81 82 Create fewer files in hugetlbfs (non-legacy mode only). 83 84* ``--huge-dir <path to hugetlbfs directory>`` 85 86 Use specified hugetlbfs directory instead of autodetected ones. 87 88* ``--huge-unlink`` 89 90 Unlink hugepage files after creating them (implies no secondary process 91 support). 92 93Other options 94~~~~~~~~~~~~~ 95 96* ``--syslog <syslog facility>`` 97 98 Set syslog facility. Valid syslog facilities are:: 99 100 auth 101 cron 102 daemon 103 ftp 104 kern 105 lpr 106 mail 107 news 108 syslog 109 user 110 uucp 111 local0 112 local1 113 local2 114 local3 115 local4 116 local5 117 local6 118 local7 119