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authorjar@chromium.org <jar@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>2010-03-31 05:14:15 +0000
committerjar@chromium.org <jar@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>2010-03-31 05:14:15 +0000
commit545baea014e3d9b51f6b25b5d6d7f9a429545677 (patch)
tree8ff5018c5226fce50075cb27e24e4e53bb2dc3ea /chrome/browser/browser_main.cc
parentf32c173f2633b8e5ee74715f6a7a02e286d1de29 (diff)
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Remove packet split experiment, and add coalescing histogram
The effort to split the packet proved to not work (presumably showing that the RTO was reasonably set by a SYN packet reception). The test did show that splitting the first packet had a negative consequence, and so the question is: How often can we coalesce 2 packets in a request into 1 packet? The most common cause would be a login, using a POST method to send a body, where the body is small. This change creates a histogram to show percentages of requests that can be coalesced. r=wtc Review URL: http://codereview.chromium.org/1539003 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@43180 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'chrome/browser/browser_main.cc')
-rw-r--r--chrome/browser/browser_main.cc14
1 files changed, 0 insertions, 14 deletions
diff --git a/chrome/browser/browser_main.cc b/chrome/browser/browser_main.cc
index 017ac15..3913c1d 100644
--- a/chrome/browser/browser_main.cc
+++ b/chrome/browser/browser_main.cc
@@ -686,20 +686,6 @@ int BrowserMain(const MainFunctionParams& parameters) {
// Initialize statistical testing infrastructure for entire browser.
FieldTrialList field_trial;
- // Set up a field trial to see if splitting the first transmitted packet helps
- // with latency.
- {
- FieldTrial::Probability kDivisor = 100;
- FieldTrial* trial = new FieldTrial("PacketSplit", kDivisor);
- // For each option (i.e., non-default), we have a fixed probability.
- FieldTrial::Probability kProbabilityPerGroup = 10; // 10% probability.
- int split = trial->AppendGroup("_first_packet_split", kProbabilityPerGroup);
- DCHECK_EQ(split, 0);
- int intact = trial->AppendGroup("_first_packet_intact",
- FieldTrial::kAllRemainingProbability);
- DCHECK_EQ(intact, 1);
- }
-
std::wstring app_name = chrome::kBrowserAppName;
std::string thread_name_string = WideToASCII(app_name + L"_BrowserMain");