X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=docs%2Freport%2Fvpp_performance_tests%2Fpacket_throughput_graphs%2Fvm_vhost.rst;h=818a9de78cff7bae4fab45ef065d78a8dc78fbf6;hp=e4c6af9f6bd6bfc4800e9c91735fb58ef815bd13;hb=fa8714742330382e764419c0432099702f182da1;hpb=fc30d9f7d402c82b69ba3c93d87bf5d7536a13a8

diff --git a/docs/report/vpp_performance_tests/packet_throughput_graphs/vm_vhost.rst b/docs/report/vpp_performance_tests/packet_throughput_graphs/vm_vhost.rst
index e4c6af9f6b..818a9de78c 100644
--- a/docs/report/vpp_performance_tests/packet_throughput_graphs/vm_vhost.rst
+++ b/docs/report/vpp_performance_tests/packet_throughput_graphs/vm_vhost.rst
@@ -8,11 +8,15 @@ packet loss). Performance is reported for VPP running in multiple
 configurations of VPP worker thread(s), a.k.a. VPP data plane thread(s),
 and their physical CPU core(s) placement.
 
-Results are generated by multiple executions of the same CSIT tests.
-In order to display variation in measured throughput values, Box-and-
-whisker plots are used to show their quartiles (Min, 1st quartile / 25th
-percentile, 2nd quartile / 50th percentile / mean, 3rd quartile / 75th
-percentile, Max). Outliers are plotted as individual points.
+Results are generated by multiple executions of the same CSIT
+performance tests across three physical testbeds within LF FD.io labs.
+To provide a descriptive summary view, Box-and-Whisker plots are used to
+display variation in measured throughput values, without making any
+assumptions of the underlying statistical distribution. For each plotted
+test case, Box-and-Whisker plots show the quartiles (Min, 1st quartile
+/ 25th percentile, 2nd quartile / 50th percentile / mean, 3rd quartile /
+75th percentile, Max) across collected data set (data set size stated in
+the note below). Outliers are plotted as individual points.
 
 *Title of each graph* is a regex (regular expression) matching all
 throughput test cases plotted on this graph, *X-axis labels* are indices
@@ -27,7 +31,9 @@ legend* lists the plotted test suites and their indices.
     `csit-vpp-perf-1704-all
     <https://jenkins.fd.io/view/csit/job/csit-vpp-perf-1704-all/>`_,
     with Robot Framework result files csit-vpp-perf-1704-all-<id>.zip
-    `archived here <../../_static/archive/>`_
+    `archived here <../../_static/archive/>`_. Plotted data set size per
+    test case is equal to the number of job executions presented in this
+    report version: **5**.
 
 NDR Throughput
 ~~~~~~~~~~~~~~