Experiment for number of persistent connections to server...

chrome/renderer/render_view.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/renderer/render_view.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 4553 matching lines @@
         UMA_HISTOGRAM_CUSTOM_TIMES(FieldTrial::MakeName(
             "Renderer4.BeginToFinish_LinkLoadStaleOk", "DnsImpact"),
             begin_to_finish, kBeginToFinishMin, kBeginToFinishMax,
             kBeginToFinishBucketCount);
         break;
       default:
         break;
     }
   }
 
+  static bool use_conn_impact_histogram(
+      FieldTrialList::Find("ConnCountImpact") &&
+      !FieldTrialList::Find("ConnCountImpact")->group_name().empty());
+  if (use_conn_impact_histogram) {
+    UMA_HISTOGRAM_ENUMERATION(
+        FieldTrial::MakeName("Renderer4.Abandoned", "ConnCountImpact"),
+        abandoned_page ? 1 : 0, 2);
+    UMA_HISTOGRAM_ENUMERATION(
+        FieldTrial::MakeName("Renderer4.LoadType", "ConnCountImpact"),
+        load_type, NavigationState::kLoadTypeMax);
+    switch (load_type) {
+      case NavigationState::NORMAL_LOAD:
+        UMA_HISTOGRAM_CUSTOM_TIMES(FieldTrial::MakeName(
+            "Renderer4.BeginToFinish_NormalLoad", "ConnCountImpact"),
+            begin_to_finish, kBeginToFinishMin, kBeginToFinishMax,
+            kBeginToFinishBucketCount);
+        break;
+      case NavigationState::LINK_LOAD_NORMAL:
+        UMA_HISTOGRAM_CUSTOM_TIMES(FieldTrial::MakeName(
+            "Renderer4.BeginToFinish_LinkLoadNormal", "ConnCountImpact"),
+            begin_to_finish, kBeginToFinishMin, kBeginToFinishMax,
+            kBeginToFinishBucketCount);
+        break;
+      case NavigationState::LINK_LOAD_RELOAD:
+        UMA_HISTOGRAM_CUSTOM_TIMES(FieldTrial::MakeName(
+            "Renderer4.BeginToFinish_LinkLoadReload", "ConnCountImpact"),
+            begin_to_finish, kBeginToFinishMin, kBeginToFinishMax,
+            kBeginToFinishBucketCount);
+        break;
+      case NavigationState::LINK_LOAD_CACHE_STALE_OK:
+        UMA_HISTOGRAM_CUSTOM_TIMES(FieldTrial::MakeName(
+            "Renderer4.BeginToFinish_LinkLoadStaleOk", "ConnCountImpact"),
+            begin_to_finish, kBeginToFinishMin, kBeginToFinishMax,
+            kBeginToFinishBucketCount);
+        break;
+      default:
+        break;
+    }
+  }
+
   static bool use_sdch_histogram(FieldTrialList::Find("GlobalSdch") &&
       !FieldTrialList::Find("GlobalSdch")->group_name().empty());
   if (use_sdch_histogram) {
     UMA_HISTOGRAM_ENUMERATION(
         FieldTrial::MakeName("Renderer4.LoadType", "GlobalSdch"),
         load_type, NavigationState::kLoadTypeMax);
     switch (load_type) {
       case NavigationState::NORMAL_LOAD:
         UMA_HISTOGRAM_CUSTOM_TIMES(FieldTrial::MakeName(
             "Renderer4.BeginToFinish_NormalLoad", "GlobalSdch"),
@@ skipping 486 matching lines @@
   webkit_glue::FormData form;
   const WebInputElement element = node.toConst<WebInputElement>();
   if (!form_manager_.FindFormWithFormControlElement(
           element, FormManager::REQUIRE_NONE, &form))
     return;
 
   autofill_action_ = action;
   Send(new ViewHostMsg_FillAutoFillFormData(
       routing_id_, autofill_query_id_, form, value, label));
 }