1 .. SPDX-License-Identifier: BSD-3-Clause
2 Copyright(c) 2018 Intel Corporation.
7 This document contains a list of all EAL parameters. These parameters can be
8 used by any DPDK application running on Linux.
13 The following EAL parameters are common to all platforms supported by DPDK.
15 .. include:: eal_args.include.rst
17 Linux-specific EAL parameters
18 -----------------------------
20 In addition to common EAL parameters, there are also Linux-specific EAL
23 Device-related options
24 ~~~~~~~~~~~~~~~~~~~~~~
26 * ``--create-uio-dev``
28 Create ``/dev/uioX`` files for devices bound to igb_uio kernel driver
29 (usually done by the igb_uio driver itself).
31 * ``--vmware-tsc-map``
33 Use VMware TSC map instead of native RDTSC.
37 Do not use the HPET timer.
39 * ``--vfio-intr <legacy|msi|msix>``
41 Use specified interrupt mode for devices bound to VFIO kernel driver.
43 Multiprocessing-related options
44 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
46 * ``--file-prefix <prefix name>``
48 Use a different shared data file prefix for a DPDK process. This option
49 allows running multiple independent DPDK primary/secondary processes under
52 * ``--base-virtaddr <address>``
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.
58 Memory-related options
59 ~~~~~~~~~~~~~~~~~~~~~~
63 Use legacy DPDK memory allocation mode.
65 * ``--socket-mem <amounts of memory per socket>``
67 Preallocate specified amounts of memory per socket. The parameter is a
68 comma-separated list of values. For example::
70 --socket-mem 1024,2048
72 This will allocate 1 gigabyte of memory on socket 0, and 2048 megabytes of
75 * ``--socket-limit <amounts of memory per socket>``
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.
80 * ``--single-file-segments``
82 Create fewer files in hugetlbfs (non-legacy mode only).
84 * ``--huge-dir <path to hugetlbfs directory>``
86 Use specified hugetlbfs directory instead of autodetected ones.
90 Unlink hugepage files after creating them (implies no secondary process
93 * ``--match-allocations``
95 Free hugepages back to system exactly as they were originally allocated.
100 * ``--syslog <syslog facility>``
102 Set syslog facility. Valid syslog facilities are::