tree 1d86bd30f96acd5fd6f3d823d3a0a7f468fc4090
parent bfd091a1e33d13d1aa0a769cfe2622d2fdfc807c
author Peng Xu <pengxu@google.com> 1442347918 -0700
committer The Android Automerger <android-build@google.com> 1443131711 -0700

Improve fairness of Sensor Timestamp Jitter Test

Changes:
  1. The threshold is calculated based on the "asked" sensor rate to
     avoid failures that caused by actual sensor rate being bumpped up.
  2. Estimation of the true center is no longer necessary. The range of
     timestamp interval is tested against 2x of the allowed single-sided
     variance.
  3. The top and bottom 2.5% of timestamp interval samples are excluded
     from evaluation. This conform to previously used 95 percentile
     rule, yet is slightly different in terms of implementation.

Related bug:
  *  b/23430923
  *  b/23948014

Change-Id: I1f444514c2df63129d9e0ce404afe3ae7ae46eb0