docs/report/vpp_performance_tests/performance_impact_meltdown/index.rst

   1 Performance Impact of Meltdown Patches
   2 ======================================
   3
   4 The following tables present performance impact on VPP after
   5 applying patches addressing Meltdown (Variant3: Rogue Data Cache Load) security
   6  ulnerabilities. Incremental kernel patches are applied for Ubuntu 16.04LTS as
   7 documented on `Ubuntu SpectreAndMeltdown page <https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SpectreAndMeltdown>`_.
   8 For detailed listing of used software versions and patches please refer
   9 to :ref:`test_environment`.
  10
  11 NDR and PDR packet throughput results are compared for 1-core/1-thread,
  12 2-cores/2-threads and 4-cores/4-threads VPP configurations, with
  13 reference performance numbers coming from tests without the Meltdown
  14 patches.
  15
  16 NDR throughput: Best 20 changes
  17 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  18
  19 .. only:: html
  20
  21    .. csv-table::
  22       :align: center
  23       :file: ../../_static/vpp/meltdown-impact-ndr-1t1c-top.csv
  24
  25 .. only:: latex
  26
  27    .. raw:: latex
  28
  29       \makeatletter
  30       \csvset{
  31         perfimprovements column width/.style={after head=\csv@pretable\begin{longtable}{m{4cm} m{#1} m{#1} m{#1} m{#1} m{#1}}\csv@tablehead},
  32       }
  33       \makeatother
  34
  35       {\tiny
  36       \csvautobooklongtable[separator=comma,
  37         respect all,
  38         no check column count,
  39         perfimprovements column width=1cm,
  40         late after line={\\\hline},
  41         late after last line={\end{longtable}}
  42         ]{../_build/_static/vpp/meltdown-impact-ndr-1t1c-top.csv}
  43       }
  44
  45 NDR throughput: Worst 20 changes
  46 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  47
  48 .. only:: html
  49
  50    .. csv-table::
  51       :align: center
  52       :file: ../../_static/vpp/meltdown-impact-ndr-1t1c-bottom.csv
  53
  54 .. only:: latex
  55
  56    .. raw:: latex
  57
  58       \makeatletter
  59       \csvset{
  60         perfimprovements column width/.style={after head=\csv@pretable\begin{longtable}{m{4cm} m{#1} m{#1} m{#1} m{#1} m{#1}}\csv@tablehead},
  61       }
  62       \makeatother
  63
  64       {\tiny
  65       \csvautobooklongtable[separator=comma,
  66         respect all,
  67         no check column count,
  68         perfimprovements column width=1cm,
  69         late after line={\\\hline},
  70         late after last line={\end{longtable}}
  71         ]{../_build/_static/vpp/meltdown-impact-ndr-1t1c-bottom.csv}
  72       }
  73
  74 .. only:: html
  75
  76 NDR throughput: All changes
  77 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
  78
  79 Complete results for all NDR tests are available in a CSV and pretty
  80 ASCII formats:
  81
  82   - `csv format for 1t1c <../../_static/vpp/meltdown-impact-ndr-1t1c-full.csv>`_,
  83   - `csv format for 2t2c <../../_static/vpp/meltdown-impact-ndr-2t2c-full.csv>`_,
  84   - `csv format for 4t4c <../../_static/vpp/meltdown-impact-ndr-4t4c-full.csv>`_,
  85   - `pretty ASCII format for 1t1c <../../_static/vpp/meltdown-impact-ndr-1t1c-full.txt>`_,
  86   - `pretty ASCII format for 2t2c <../../_static/vpp/meltdown-impact-ndr-2t2c-full.txt>`_,
  87   - `pretty ASCII format for 4t4c <../../_static/vpp/meltdown-impact-ndr-4t4c-full.txt>`_.
  88
  89 PDR throughput: Best 20 changes
  90 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  91
  92 .. only:: html
  93
  94    .. csv-table::
  95       :align: center
  96       :file: ../../_static/vpp/meltdown-impact-pdr-1t1c-top.csv
  97
  98 .. only:: latex
  99
 100    .. raw:: latex
 101
 102       \makeatletter
 103       \csvset{
 104         perfimprovements column width/.style={after head=\csv@pretable\begin{longtable}{m{4cm} m{#1} m{#1} m{#1} m{#1} m{#1}}\csv@tablehead},
 105       }
 106       \makeatother
 107
 108       {\tiny
 109       \csvautobooklongtable[separator=comma,
 110         respect all,
 111         no check column count,
 112         perfimprovements column width=1cm,
 113         late after line={\\\hline},
 114         late after last line={\end{longtable}}
 115         ]{../_build/_static/vpp/meltdown-impact-pdr-1t1c-top.csv}
 116       }
 117
 118 PDR throughput: Worst 20 changes
 119 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 120
 121 .. only:: html
 122
 123    .. csv-table::
 124       :align: center
 125       :file: ../../_static/vpp/meltdown-impact-pdr-1t1c-bottom.csv
 126
 127 .. only:: latex
 128
 129    .. raw:: latex
 130
 131       \makeatletter
 132       \csvset{
 133         perfimprovements column width/.style={after head=\csv@pretable\begin{longtable}{m{4cm} m{#1} m{#1} m{#1} m{#1} m{#1}}\csv@tablehead},
 134       }
 135       \makeatother
 136
 137       {\tiny
 138       \csvautobooklongtable[separator=comma,
 139         respect all,
 140         no check column count,
 141         perfimprovements column width=1cm,
 142         late after line={\\\hline},
 143         late after last line={\end{longtable}}
 144         ]{../_build/_static/vpp/meltdown-impact-pdr-1t1c-bottom.csv}
 145       }
 146
 147 .. only:: html
 148
 149 PDR throughput: All changes
 150 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
 151
 152 Complete results for all PDR tests are available in a CSV and pretty
 153 ASCII formats:
 154
 155   - `csv format for 1t1c <../../_static/vpp/meltdown-impact-pdr-1t1c-full.csv>`_,
 156   - `csv format for 2t2c <../../_static/vpp/meltdown-impact-pdr-2t2c-full.csv>`_,
 157   - `csv format for 4t4c <../../_static/vpp/meltdown-impact-pdr-4t4c-full.csv>`_,
 158   - `pretty ASCII format for 1t1c <../../_static/vpp/meltdown-impact-pdr-1t1c-full.txt>`_,
 159   - `pretty ASCII format for 2t2c <../../_static/vpp/meltdown-impact-pdr-2t2c-full.txt>`_,
 160   - `pretty ASCII format for 4t4c <../../_static/vpp/meltdown-impact-pdr-4t4c-full.txt>`_.