From be9da55612fbfd14abeed381592c2b1ca9956d99 Mon Sep 17 00:00:00 2001 From: Vratko Polak Date: Wed, 15 May 2019 13:37:43 +0200 Subject: PLRsearch methodology: Add graphs with descriptions. Change-Id: I1acb74c6edb966dcdbbdaf88c05bfde1192bf74b Signed-off-by: Vratko Polak (cherry picked from commit c29fa202d2ce4e4c28c41ab4b6ba2353acf42c92) --- docs/report/introduction/PLR_patch.svg | 3585 ------ docs/report/introduction/PLR_vhost.svg | 3389 ------ .../PLR_patch.svg | 11299 +++++++++++++++++++ .../PLR_vhost.svg | 11081 ++++++++++++++++++ .../methodology_plrsearch.rst | 73 +- 5 files changed, 22451 insertions(+), 6976 deletions(-) delete mode 100644 docs/report/introduction/PLR_patch.svg delete mode 100644 docs/report/introduction/PLR_vhost.svg create mode 100644 docs/report/introduction/methodology_data_plane_throughput/PLR_patch.svg create mode 100644 docs/report/introduction/methodology_data_plane_throughput/PLR_vhost.svg diff --git a/docs/report/introduction/PLR_patch.svg b/docs/report/introduction/PLR_patch.svg deleted file mode 100644 index ab653694ed..0000000000 --- a/docs/report/introduction/PLR_patch.svg +++ /dev/null @@ -1,3585 +0,0 @@ - - - - - - image/svg+xml - - 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100644 --- a/docs/report/introduction/methodology_data_plane_throughput/methodology_plrsearch.rst +++ b/docs/report/introduction/methodology_data_plane_throughput/methodology_plrsearch.rst @@ -220,8 +220,77 @@ as the observed trends have varied characteristics. Probably, using a more realistic fitting functions will give better estimates than trend analysis. -.. - TODO: Add graphical examples created from 1904 data. +Graphical examples +`````````````````` + +The following pictures show the upper (red) and lower (blue) bound, +as well as average of stretch (pink) and erf (light green) estimate, +and offered load chosen (grey), as computed by PLRsearch, +after each trial measurement within the 2 hour duration of a test run. + +Both graphs are focusing on later estimates. Estimates computed from +few initial measurements are wildly off the y-axis range shown. + +L2 patch +-------- + +This test case shows quite narrow critical region. Both fitting functions +give similar estimates, the graph shows the randomness of measurements, +and a trend. Both fitting functions seem to be fairly precise in estimating +the critical rate, but the performance of the system decreases slightly +over time. The final estimated interval is fairly narrow, +but corresponds to the measured results. + +.. only:: latex + + .. raw:: latex + + \begin{figure}[H] + \centering + \graphicspath{{../_tmp/src/introduction/methodology_data_plane_throughput/}} + \includegraphics[width=0.90\textwidth]{PLR_patch} + \label{fig:PLR_patch} + \end{figure} + +.. only:: html + + .. figure:: PLR_patch.svg + :alt: PLR_patch + :align: center + +Vhost +----- + +This test case shows quite broad critical region. Fitting functions give +fairly differing estimates. Erf function overestimates, stretch function +is fairly precise (based on its estimate not moving much with time). +The graph mostly shows later measurements slowly bringing the estimates +towards each other. The final estimated interval is too broad, +a longer run would return a smaller interval within the current one. + +The broadness is caused by result composition, which consists of +mostly zero loss measurements, partialy of medium loss measurements, +and lack of small loss measurements the loss ratio target would imply. + +With this result composition, it is expected that the convergence +of the two bounds is slow. + +.. only:: latex + + .. raw:: latex + + \begin{figure}[H] + \centering + \graphicspath{{../_tmp/src/introduction/methodology_data_plane_throughput/}} + \includegraphics[width=0.90\textwidth]{PLR_vhost} + \label{fig:PLR_vhost} + \end{figure} + +.. only:: html + + .. figure:: PLR_vhost.svg + :alt: PLR_vhost + :align: center .. _draft-vpolak-bmwg-plrsearch-01: https://tools.ietf.org/html/draft-vpolak-bmwg-plrsearch-01 .. _plrsearch draft: https://tools.ietf.org/html/draft-vpolak-bmwg-plrsearch-00 -- cgit 1.2.3-korg