From 60ade1851ed73db9db58d265b9db85034257e15a Mon Sep 17 00:00:00 2001
From: Andy Doan <andy.doan@linaro.org>
Date: Wed, 13 Jun 2012 11:04:25 -0500
Subject: Report % standard deviation instead of raw stddev

This makes things a little nice to compare in relation to each other.

Signed-off-by: Andy Doan <andy.doan@linaro.org>
---
 android_benchmark_views_app/helpers.py                            | 8 ++++++--
 .../templates/android_benchmark_views_app/run.html                | 4 ++--
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/android_benchmark_views_app/helpers.py b/android_benchmark_views_app/helpers.py
index 78d030f..b096485 100644
--- a/android_benchmark_views_app/helpers.py
+++ b/android_benchmark_views_app/helpers.py
@@ -38,6 +38,9 @@ def _get_test_result_averages(bundle, test_id):
                 annotate(std_dev=StdDev('measurement'), average=Avg('measurement')). \
                 order_by('relative_index')
 
+    for avg in avgs:
+        avg['std_dev_percent'] = 100.0 * avg['std_dev'] / avg['average']
+
     return avgs
 
 def _get_totals_default(test_result_averages):
@@ -60,7 +63,7 @@ def _add_totals(test_averages):
         fname = "__get_%s_totals" % ta['test']
         func = getattr(thismodule, fname, _get_totals_default)
         total = func(ta['test_result_averages'])
-        tra.append({'test_case__test_case_id':ta['test'], 'average': total, 'std_dev': 0})
+        tra.append({'test_case__test_case_id':ta['test'], 'average': total, 'std_dev': 0, 'std_dev_percent' : 0})
 
     test_averages.insert(0, {
             'test': 'Totals',
@@ -113,7 +116,8 @@ def benchmark_run_test_averages(benchmarkrun):
             {
                 'test_case__test_case_id': 'Richards',
                 'average': 10.2,
-                'std_dev': .122
+                'std_dev': .122,
+                'std_dev_percent': 1
             },
          ]
         },
diff --git a/android_benchmark_views_app/templates/android_benchmark_views_app/run.html b/android_benchmark_views_app/templates/android_benchmark_views_app/run.html
index 0524aa6..a3db036 100644
--- a/android_benchmark_views_app/templates/android_benchmark_views_app/run.html
+++ b/android_benchmark_views_app/templates/android_benchmark_views_app/run.html
@@ -26,11 +26,11 @@
           <tr>
 	    <th>Test case</th>
 	    <th>Measurement</th>
-	    <th>Standard Deviation</th>
+	    <th>% Standard Deviation</th>
 	</thead>
       {% for tra in ta.test_result_averages %}
         <tr class="{% cycle 'odd' 'even' %}">
-	  <td>{{tra.test_case__test_case_id}}</td><td>{{tra.average}}</td><td>{{tra.std_dev}}</td>
+	  <td>{{tra.test_case__test_case_id}}</td><td>{{tra.average}}</td><td>{{tra.std_dev_percent}}</td>
 	</tr>
       {% endfor %}
       </table>
-- 
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