ceph/src/seastar/dpdk/doc/guides/tools/proc_info.rst

   1 ..  SPDX-License-Identifier: BSD-3-Clause
   2     Copyright(c) 2015 Intel Corporation.
   3
   4 dpdk-procinfo Application
   5 =========================
   6
   7 The dpdk-procinfo application is a Data Plane Development Kit (DPDK) application
   8 that runs as a DPDK secondary process and is capable of retrieving port
   9 statistics, resetting port statistics, printing DPDK memory information and
  10 displaying debug information for port.
  11 This application extends the original functionality that was supported by
  12 dump_cfg.
  13
  14 Running the Application
  15 -----------------------
  16 The application has a number of command line options:
  17
  18 .. code-block:: console
  19
  20    ./$(RTE_TARGET)/app/dpdk-procinfo -- -m | [-p PORTMASK] [--stats | --xstats |
  21    --stats-reset | --xstats-reset] [ --show-port | --show-tm | --show-crypto |
  22    --show-ring[=name] | --show-mempool[=name] | --iter-mempool=name ]
  23
  24 Parameters
  25 ~~~~~~~~~~
  26 **-p PORTMASK**: Hexadecimal bitmask of ports to configure.
  27
  28 **--stats**
  29 The stats parameter controls the printing of generic port statistics. If no
  30 port mask is specified stats are printed for all DPDK ports.
  31
  32 **--xstats**
  33 The xstats parameter controls the printing of extended port statistics. If no
  34 port mask is specified xstats are printed for all DPDK ports.
  35
  36 **--stats-reset**
  37 The stats-reset parameter controls the resetting of generic port statistics. If
  38 no port mask is specified, the generic stats are reset for all DPDK ports.
  39
  40 **--xstats-reset**
  41 The xstats-reset parameter controls the resetting of extended port statistics.
  42 If no port mask is specified xstats are reset for all DPDK ports.
  43
  44 **-m**: Print DPDK memory information.
  45
  46 **--show-port**
  47 The show-port parameter displays port level various configuration information
  48 associated to RX port queue pair.
  49
  50 **--show-tm**
  51 The show-tm parameter displays per port traffic manager settings, current
  52 configurations and statistics.
  53
  54 **--show-crypto**
  55 The show-crypto parameter displays available cryptodev configurations,
  56 settings and stats per node.
  57
  58 **--show-ring[=name]**
  59 The show-ring parameter display current allocation of all ring with
  60 debug information. Specifying the name allows to display details for specific
  61 ring. For invalid or no ring name, whole list is dump.
  62
  63 **--show-mempool[=name]**
  64 The show-mempool parameter display current allocation of all mempool
  65 debug information. Specifying the name allows to display details for specific
  66 specific mempool. For invalid or no mempool name, whole list is dump.
  67
  68 **--iter-mempool=name**
  69 The iter-mempool parameter iterates and displays mempool elements specified
  70 by name. For invalid or no mempool name no elements are displayed.
  71
  72 Limitations
  73 -----------
  74
  75 * dpdk-procinfo should run alongside primary process with same DPDK version.
  76
  77 * When running ``dpdk-procinfo`` with shared library mode, it is required to
  78   pass the same NIC PMD libraries as used for the primary application. Any
  79   mismatch in PMD library arguments can lead to undefined behavior and results
  80   affecting primary application too.
  81
  82 * Stats retrieval using ``dpdk-procinfo`` is not supported for virtual devices like PCAP and TAP.
  83
  84 * Since default DPDK EAL arguments for ``dpdk-procinfo`` are ``-c1, -n4 & --proc-type=secondary``,
  85   It is not expected that the user passes any EAL arguments.