// Copyright (c) 2012 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/page_load_histograms.h" #include "base/command_line.h" #include "base/logging.h" #include "base/metrics/field_trial.h" #include "base/metrics/histogram.h" #include "base/time.h" #include "chrome/common/chrome_switches.h" #include "chrome/renderer/chrome_content_renderer_client.h" #include "content/public/common/content_constants.h" #include "content/public/renderer/document_state.h" #include "content/public/renderer/render_thread.h" #include "content/public/renderer/render_view.h" #include "extensions/common/url_pattern.h" #include "googleurl/src/gurl.h" #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebURLResponse.h" #include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h" #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h" #include "third_party/WebKit/Source/WebKit/chromium/public/WebPerformance.h" #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h" using WebKit::WebDataSource; using WebKit::WebFrame; using WebKit::WebPerformance; using WebKit::WebString; using base::Time; using base::TimeDelta; using content::DocumentState; const size_t kPLTCount = 100; namespace { TimeDelta kPLTMin() { return TimeDelta::FromMilliseconds(10); } TimeDelta kPLTMax() { return TimeDelta::FromMinutes(10); } #define PLT_HISTOGRAM(name, sample) \ UMA_HISTOGRAM_CUSTOM_TIMES(name, sample, kPLTMin(), kPLTMax(), kPLTCount); // Returns the scheme type of the given URL if its type is one for which we // dump page load histograms. Otherwise returns NULL. URLPattern::SchemeMasks GetSupportedSchemeType(const GURL& url) { if (url.SchemeIs("http")) return URLPattern::SCHEME_HTTP; else if (url.SchemeIs("https")) return URLPattern::SCHEME_HTTPS; return static_cast(0); } void DumpPerformanceTiming(const WebPerformance& performance, DocumentState* document_state) { Time request = document_state->request_time(); Time navigation_start = Time::FromDoubleT(performance.navigationStart()); Time request_start = Time::FromDoubleT(performance.requestStart()); Time response_start = Time::FromDoubleT(performance.responseStart()); Time load_event_start = Time::FromDoubleT(performance.loadEventStart()); Time load_event_end = Time::FromDoubleT(performance.loadEventEnd()); Time begin = (request.is_null() ? navigation_start : request_start); DCHECK(!navigation_start.is_null()); DCHECK(!request_start.is_null()); DCHECK(!response_start.is_null()); // TODO(dominich): Investigate conditions under which |load_event_start| and // |load_event_end| may be NULL as in the non-PT_ case below. Examples in // http://crbug.com/112006. // DCHECK(!load_event_start.is_null()); // DCHECK(!load_event_end.is_null()); if (document_state->web_timing_histograms_recorded()) return; document_state->set_web_timing_histograms_recorded(true); // TODO(simonjam): There is no way to distinguish between abandonment and // intentional Javascript navigation before the load event fires. // TODO(dominich): Load type breakdown if (!load_event_start.is_null()) { PLT_HISTOGRAM("PLT.PT_BeginToFinishDoc", load_event_start - begin); PLT_HISTOGRAM("PLT.PT_CommitToFinishDoc", load_event_start - response_start); } if (!load_event_end.is_null()) { PLT_HISTOGRAM("PLT.PT_BeginToFinish", load_event_end - begin); PLT_HISTOGRAM("PLT.PT_CommitToFinish", load_event_end - response_start); PLT_HISTOGRAM("PLT.PT_RequestToFinish", load_event_end - navigation_start); PLT_HISTOGRAM("PLT.PT_StartToFinish", load_event_end - request_start); } if (!load_event_start.is_null() && !load_event_end.is_null()) { PLT_HISTOGRAM("PLT.PT_FinishDocToFinish", load_event_end - load_event_start); } PLT_HISTOGRAM("PLT.PT_BeginToCommit", response_start - begin); PLT_HISTOGRAM("PLT.PT_RequestToStart", request_start - navigation_start); PLT_HISTOGRAM("PLT.PT_StartToCommit", response_start - request_start); } enum MissingStartType { START_MISSING = 0x1, COMMIT_MISSING = 0x2, NAV_START_MISSING = 0x4, MISSING_START_TYPE_MAX = 0x8 }; enum AbandonType { FINISH_DOC_MISSING = 0x1, FINISH_ALL_LOADS_MISSING = 0x2, LOAD_EVENT_START_MISSING = 0x4, LOAD_EVENT_END_MISSING = 0x8, ABANDON_TYPE_MAX = 0x10 }; } // namespace PageLoadHistograms::PageLoadHistograms(content::RenderView* render_view) : content::RenderViewObserver(render_view), cross_origin_access_count_(0), same_origin_access_count_(0) { } void PageLoadHistograms::Dump(WebFrame* frame) { // We only dump histograms for main frames. // In the future, it may be interesting to tag subframes and dump them too. if (!frame || frame->parent()) return; // Only dump for supported schemes. URLPattern::SchemeMasks scheme_type = GetSupportedSchemeType(frame->document().url()); if (scheme_type == 0) return; // Ignore multipart requests. if (frame->dataSource()->response().isMultipartPayload()) return; DocumentState* document_state = DocumentState::FromDataSource(frame->dataSource()); // Times based on the Web Timing metrics. // http://www.w3.org/TR/navigation-timing/ // TODO(tonyg, jar): We are in the process of vetting these metrics against // the existing ones. Once we understand any differences, we will standardize // on a single set of metrics. DumpPerformanceTiming(frame->performance(), document_state); // If we've already dumped, do nothing. // This simple bool works because we only dump for the main frame. if (document_state->load_histograms_recorded()) return; // Collect measurement times. Time start = document_state->start_load_time(); Time commit = document_state->commit_load_time(); // TODO(tonyg, jar): Start can be missing after an in-document navigation and // possibly other cases like a very premature abandonment of the page. // The PLT.MissingStart histogram should help us troubleshoot and then we can // remove this. Time navigation_start = Time::FromDoubleT(frame->performance().navigationStart()); int missing_start_type = 0; missing_start_type |= start.is_null() ? START_MISSING : 0; missing_start_type |= commit.is_null() ? COMMIT_MISSING : 0; missing_start_type |= navigation_start.is_null() ? NAV_START_MISSING : 0; UMA_HISTOGRAM_ENUMERATION("PLT.MissingStart", missing_start_type, MISSING_START_TYPE_MAX); if (missing_start_type) return; // We properly handle null values for the next 3 variables. Time request = document_state->request_time(); Time first_paint = document_state->first_paint_time(); Time first_paint_after_load = document_state->first_paint_after_load_time(); Time finish_doc = document_state->finish_document_load_time(); Time finish_all_loads = document_state->finish_load_time(); // TODO(tonyg, jar): We suspect a bug in abandonment counting, this temporary // histogram should help us to troubleshoot. Time load_event_start = Time::FromDoubleT(frame->performance().loadEventStart()); Time load_event_end = Time::FromDoubleT(frame->performance().loadEventEnd()); int abandon_type = 0; abandon_type |= finish_doc.is_null() ? FINISH_DOC_MISSING : 0; abandon_type |= finish_all_loads.is_null() ? FINISH_ALL_LOADS_MISSING : 0; abandon_type |= load_event_start.is_null() ? LOAD_EVENT_START_MISSING : 0; abandon_type |= load_event_end.is_null() ? LOAD_EVENT_END_MISSING : 0; UMA_HISTOGRAM_ENUMERATION("PLT.AbandonType", abandon_type, ABANDON_TYPE_MAX); // Handle case where user hits "stop" or "back" before loading completely. bool abandoned_page = finish_doc.is_null(); if (abandoned_page) { finish_doc = Time::Now(); document_state->set_finish_document_load_time(finish_doc); } // TODO(jar): We should really discriminate the definition of "abandon" more // finely. We should have: // abandon_before_document_loaded // abandon_before_onload_fired if (finish_all_loads.is_null()) { finish_all_loads = Time::Now(); document_state->set_finish_load_time(finish_all_loads); } else { DCHECK(!abandoned_page); // How can the doc have finished but not the page? if (abandoned_page) return; // Don't try to record a stat which is broken. } document_state->set_load_histograms_recorded(true); // Note: Client side redirects will have no request time. Time begin = request.is_null() ? start : request; TimeDelta begin_to_finish_doc = finish_doc - begin; TimeDelta begin_to_finish_all_loads = finish_all_loads - begin; TimeDelta start_to_finish_all_loads = finish_all_loads - start; TimeDelta start_to_commit = commit - start; DocumentState::LoadType load_type = document_state->load_type(); // The above code sanitized all values of times, in preparation for creating // actual histograms. The remainder of this code could be run at destructor // time for the document_state, since all data is intact. // Aggregate PLT data across all link types. UMA_HISTOGRAM_ENUMERATION("PLT.Abandoned", abandoned_page ? 1 : 0, 2); UMA_HISTOGRAM_ENUMERATION("PLT.LoadType", load_type, DocumentState::kLoadTypeMax); PLT_HISTOGRAM("PLT.StartToCommit", start_to_commit); PLT_HISTOGRAM("PLT.CommitToFinishDoc", finish_doc - commit); PLT_HISTOGRAM("PLT.FinishDocToFinish", finish_all_loads - finish_doc); PLT_HISTOGRAM("PLT.BeginToCommit", commit - begin); PLT_HISTOGRAM("PLT.StartToFinish", start_to_finish_all_loads); if (!request.is_null()) { PLT_HISTOGRAM("PLT.RequestToStart", start - request); PLT_HISTOGRAM("PLT.RequestToFinish", finish_all_loads - request); } PLT_HISTOGRAM("PLT.CommitToFinish", finish_all_loads - commit); if (!first_paint.is_null()) { // 'first_paint' can be before 'begin' for an unknown reason. // See bug http://crbug.com/125273 for details. if (begin <= first_paint) { PLT_HISTOGRAM("PLT.BeginToFirstPaint", first_paint - begin); } DCHECK(commit <= first_paint); PLT_HISTOGRAM("PLT.CommitToFirstPaint", first_paint - commit); } if (!first_paint_after_load.is_null()) { // 'first_paint_after_load' can be before 'begin' for an unknown reason. // See bug http://crbug.com/125273 for details. if (begin <= first_paint_after_load) { PLT_HISTOGRAM("PLT.BeginToFirstPaintAfterLoad", first_paint_after_load - begin); } DCHECK(commit <= first_paint_after_load); PLT_HISTOGRAM("PLT.CommitToFirstPaintAfterLoad", first_paint_after_load - commit); DCHECK(finish_all_loads <= first_paint_after_load); PLT_HISTOGRAM("PLT.FinishToFirstPaintAfterLoad", first_paint_after_load - finish_all_loads); } PLT_HISTOGRAM("PLT.BeginToFinishDoc", begin_to_finish_doc); PLT_HISTOGRAM("PLT.BeginToFinish", begin_to_finish_all_loads); // Load type related histograms. switch (load_type) { case DocumentState::UNDEFINED_LOAD: PLT_HISTOGRAM("PLT.BeginToFinishDoc_UndefLoad", begin_to_finish_doc); PLT_HISTOGRAM("PLT.BeginToFinish_UndefLoad", begin_to_finish_all_loads); break; case DocumentState::RELOAD: PLT_HISTOGRAM("PLT.BeginToFinishDoc_Reload", begin_to_finish_doc); PLT_HISTOGRAM("PLT.BeginToFinish_Reload", begin_to_finish_all_loads); break; case DocumentState::HISTORY_LOAD: PLT_HISTOGRAM("PLT.BeginToFinishDoc_HistoryLoad", begin_to_finish_doc); PLT_HISTOGRAM("PLT.BeginToFinish_HistoryLoad", begin_to_finish_all_loads); break; case DocumentState::NORMAL_LOAD: PLT_HISTOGRAM("PLT.BeginToFinishDoc_NormalLoad", begin_to_finish_doc); PLT_HISTOGRAM("PLT.BeginToFinish_NormalLoad", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_NORMAL: PLT_HISTOGRAM("PLT.BeginToFinishDoc_LinkLoadNormal", begin_to_finish_doc); PLT_HISTOGRAM("PLT.BeginToFinish_LinkLoadNormal", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_RELOAD: PLT_HISTOGRAM("PLT.BeginToFinishDoc_LinkLoadReload", begin_to_finish_doc); PLT_HISTOGRAM("PLT.BeginToFinish_LinkLoadReload", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_CACHE_STALE_OK: PLT_HISTOGRAM("PLT.BeginToFinishDoc_LinkLoadStaleOk", begin_to_finish_doc); PLT_HISTOGRAM("PLT.BeginToFinish_LinkLoadStaleOk", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_CACHE_ONLY: PLT_HISTOGRAM("PLT.BeginToFinishDoc_LinkLoadCacheOnly", begin_to_finish_doc); PLT_HISTOGRAM("PLT.BeginToFinish_LinkLoadCacheOnly", begin_to_finish_all_loads); break; default: break; } if (document_state->was_fetched_via_proxy() && document_state->was_fetched_via_spdy() && CommandLine::ForCurrentProcess()->HasSwitch(switches::kSpdyProxyOrigin)) { UMA_HISTOGRAM_ENUMERATION( "PLT.Abandoned_SpdyProxy", abandoned_page ? 1 : 0, 2); PLT_HISTOGRAM("PLT.BeginToFinishDoc_SpdyProxy", begin_to_finish_doc); PLT_HISTOGRAM("PLT.BeginToFinish_SpdyProxy", begin_to_finish_all_loads); } // Histograms to determine if prefetch & prerender has an impact on PLT. static const bool prefetching_fieldtrial = base::FieldTrialList::TrialExists("Prefetch"); if (prefetching_fieldtrial) { if (document_state->was_prefetcher()) { PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinishDoc_ContentPrefetcher", "Prefetch"), begin_to_finish_doc); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_ContentPrefetcher", "Prefetch"), begin_to_finish_all_loads); } if (document_state->was_referred_by_prefetcher()) { PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinishDoc_ContentPrefetcherReferrer", "Prefetch"), begin_to_finish_doc); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_ContentPrefetcherReferrer", "Prefetch"), begin_to_finish_all_loads); } UMA_HISTOGRAM_ENUMERATION(base::FieldTrial::MakeName( "PLT.Abandoned", "Prefetch"), abandoned_page ? 1 : 0, 2); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinishDoc", "Prefetch"), begin_to_finish_doc); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish", "Prefetch"), begin_to_finish_all_loads); } static const bool prerendering_fieldtrial = base::FieldTrialList::TrialExists("Prerender"); if (prerendering_fieldtrial) { if (document_state->was_prefetcher()) { PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinishDoc_ContentPrefetcher", "Prerender"), begin_to_finish_doc); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_ContentPrefetcher", "Prerender"), begin_to_finish_all_loads); } if (document_state->was_referred_by_prefetcher()) { PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinishDoc_ContentPrefetcherReferrer", "Prerender"), begin_to_finish_doc); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_ContentPrefetcherReferrer", "Prerender"), begin_to_finish_all_loads); } UMA_HISTOGRAM_ENUMERATION(base::FieldTrial::MakeName( "PLT.Abandoned", "Prerender"), abandoned_page ? 1 : 0, 2); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinishDoc", "Prerender"), begin_to_finish_doc); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish", "Prerender"), begin_to_finish_all_loads); } // Histograms to determine if SDCH has an impact. // TODO(jar): Consider removing per-link load types and the enumeration. static const bool use_sdch_histogram = base::FieldTrialList::TrialExists("GlobalSdch"); if (use_sdch_histogram) { UMA_HISTOGRAM_ENUMERATION( base::FieldTrial::MakeName("PLT.LoadType", "GlobalSdch"), load_type, DocumentState::kLoadTypeMax); switch (load_type) { case DocumentState::NORMAL_LOAD: PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_NormalLoad", "GlobalSdch"), begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_NORMAL: PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_LinkLoadNormal", "GlobalSdch"), begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_RELOAD: PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_LinkLoadReload", "GlobalSdch"), begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_CACHE_STALE_OK: PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_LinkLoadStaleOk", "GlobalSdch"), begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_CACHE_ONLY: PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_LinkLoadCacheOnly", "GlobalSdch"), begin_to_finish_all_loads); break; default: break; } } // TODO(mpcomplete): remove the extension-related histograms after we collect // enough data. http://crbug.com/100411 chrome::ChromeContentRendererClient* client = static_cast( content::GetContentClient()->renderer()); const bool use_adblock_histogram = client->IsAdblockInstalled(); if (use_adblock_histogram) { UMA_HISTOGRAM_ENUMERATION( "PLT.Abandoned_ExtensionAdblock", abandoned_page ? 1 : 0, 2); switch (load_type) { case DocumentState::NORMAL_LOAD: PLT_HISTOGRAM( "PLT.BeginToFinish_NormalLoad_ExtensionAdblock", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_NORMAL: PLT_HISTOGRAM( "PLT.BeginToFinish_LinkLoadNormal_ExtensionAdblock", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_RELOAD: PLT_HISTOGRAM( "PLT.BeginToFinish_LinkLoadReload_ExtensionAdblock", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_CACHE_STALE_OK: PLT_HISTOGRAM( "PLT.BeginToFinish_LinkLoadStaleOk_ExtensionAdblock", begin_to_finish_all_loads); break; default: break; } } const bool use_adblockplus_histogram = client->IsAdblockPlusInstalled(); if (use_adblockplus_histogram) { UMA_HISTOGRAM_ENUMERATION( "PLT.Abandoned_ExtensionAdblockPlus", abandoned_page ? 1 : 0, 2); switch (load_type) { case DocumentState::NORMAL_LOAD: PLT_HISTOGRAM( "PLT.BeginToFinish_NormalLoad_ExtensionAdblockPlus", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_NORMAL: PLT_HISTOGRAM( "PLT.BeginToFinish_LinkLoadNormal_ExtensionAdblockPlus", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_RELOAD: PLT_HISTOGRAM( "PLT.BeginToFinish_LinkLoadReload_ExtensionAdblockPlus", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_CACHE_STALE_OK: PLT_HISTOGRAM( "PLT.BeginToFinish_LinkLoadStaleOk_ExtensionAdblockPlus", begin_to_finish_all_loads); break; default: break; } } const bool use_webrequest_adblock_histogram = client->IsAdblockWithWebRequestInstalled(); if (use_webrequest_adblock_histogram) { UMA_HISTOGRAM_ENUMERATION( "PLT.Abandoned_ExtensionWebRequestAdblock", abandoned_page ? 1 : 0, 2); switch (load_type) { case DocumentState::NORMAL_LOAD: PLT_HISTOGRAM( "PLT.BeginToFinish_NormalLoad_ExtensionWebRequestAdblock", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_NORMAL: PLT_HISTOGRAM( "PLT.BeginToFinish_LinkLoadNormal_ExtensionWebRequestAdblock", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_RELOAD: PLT_HISTOGRAM( "PLT.BeginToFinish_LinkLoadReload_ExtensionWebRequestAdblock", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_CACHE_STALE_OK: PLT_HISTOGRAM( "PLT.BeginToFinish_LinkLoadStaleOk_ExtensionWebRequestAdblock", begin_to_finish_all_loads); break; default: break; } } const bool use_webrequest_adblockplus_histogram = client->IsAdblockPlusWithWebRequestInstalled(); if (use_webrequest_adblockplus_histogram) { UMA_HISTOGRAM_ENUMERATION( "PLT.Abandoned_ExtensionWebRequestAdblockPlus", abandoned_page ? 1 : 0, 2); switch (load_type) { case DocumentState::NORMAL_LOAD: PLT_HISTOGRAM( "PLT.BeginToFinish_NormalLoad_ExtensionWebRequestAdblockPlus", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_NORMAL: PLT_HISTOGRAM( "PLT.BeginToFinish_LinkLoadNormal_ExtensionWebRequestAdblockPlus", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_RELOAD: PLT_HISTOGRAM( "PLT.BeginToFinish_LinkLoadReload_ExtensionWebRequestAdblockPlus", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_CACHE_STALE_OK: PLT_HISTOGRAM( "PLT.BeginToFinish_LinkLoadStaleOk_ExtensionWebRequestAdblockPlus", begin_to_finish_all_loads); break; default: break; } } const bool use_webrequest_other_histogram = client->IsOtherExtensionWithWebRequestInstalled(); if (use_webrequest_other_histogram) { UMA_HISTOGRAM_ENUMERATION( "PLT.Abandoned_ExtensionWebRequestOther", abandoned_page ? 1 : 0, 2); switch (load_type) { case DocumentState::NORMAL_LOAD: PLT_HISTOGRAM( "PLT.BeginToFinish_NormalLoad_ExtensionWebRequestOther", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_NORMAL: PLT_HISTOGRAM( "PLT.BeginToFinish_LinkLoadNormal_ExtensionWebRequestOther", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_RELOAD: PLT_HISTOGRAM( "PLT.BeginToFinish_LinkLoadReload_ExtensionWebRequestOther", begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_CACHE_STALE_OK: PLT_HISTOGRAM( "PLT.BeginToFinish_LinkLoadStaleOk_ExtensionWebRequestOther", begin_to_finish_all_loads); break; default: break; } } // For the SPDY field trials, we need to verify that the page loaded was // the type we requested: // if we asked for a SPDY request, we got a SPDY request // if we asked for a HTTP request, we got a HTTP request // Due to spdy version mismatches, it is possible that we ask for SPDY // but didn't get SPDY. static const bool use_spdy_histogram = base::FieldTrialList::TrialExists("SpdyImpact"); if (use_spdy_histogram) { // We take extra effort to only compute these once. static bool in_spdy_trial = base::FieldTrialList::Find( "SpdyImpact")->group_name() == "npn_with_spdy"; static bool in_http_trial = base::FieldTrialList::Find( "SpdyImpact")->group_name() == "npn_with_http"; bool spdy_trial_success = document_state->was_fetched_via_spdy() ? in_spdy_trial : in_http_trial; if (spdy_trial_success) { // Histograms to determine if SPDY has an impact for https traffic. // TODO(mbelshe): After we've seen the difference between BeginToFinish // and StartToFinish, consider removing one or the other. if (scheme_type == URLPattern::SCHEME_HTTPS && document_state->was_npn_negotiated()) { UMA_HISTOGRAM_ENUMERATION( base::FieldTrial::MakeName("PLT.Abandoned", "SpdyImpact"), abandoned_page ? 1 : 0, 2); switch (load_type) { case DocumentState::LINK_LOAD_NORMAL: PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_LinkLoadNormal", "SpdyImpact"), begin_to_finish_all_loads); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.StartToFinish_LinkLoadNormal", "SpdyImpact"), start_to_finish_all_loads); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.StartToCommit_LinkLoadNormal", "SpdyImpact"), start_to_commit); break; case DocumentState::NORMAL_LOAD: PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_NormalLoad", "SpdyImpact"), begin_to_finish_all_loads); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.StartToFinish_NormalLoad", "SpdyImpact"), start_to_finish_all_loads); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.StartToCommit_NormalLoad", "SpdyImpact"), start_to_commit); break; default: break; } } // Histograms to compare the impact of alternate protocol over http // traffic: when spdy is used vs. when http is used. if (scheme_type == URLPattern::SCHEME_HTTP && document_state->was_alternate_protocol_available()) { if (!document_state->was_npn_negotiated()) { // This means that even there is alternate protocols for npn_http or // npn_spdy, they are not taken (due to the base::FieldTrial). switch (load_type) { case DocumentState::LINK_LOAD_NORMAL: PLT_HISTOGRAM( "PLT.StartToFinish_LinkLoadNormal_AlternateProtocol_http", start_to_finish_all_loads); PLT_HISTOGRAM( "PLT.StartToCommit_LinkLoadNormal_AlternateProtocol_http", start_to_commit); break; case DocumentState::NORMAL_LOAD: PLT_HISTOGRAM( "PLT.StartToFinish_NormalLoad_AlternateProtocol_http", start_to_finish_all_loads); PLT_HISTOGRAM( "PLT.StartToCommit_NormalLoad_AlternateProtocol_http", start_to_commit); break; default: break; } } else if (document_state->was_fetched_via_spdy()) { switch (load_type) { case DocumentState::LINK_LOAD_NORMAL: PLT_HISTOGRAM( "PLT.StartToFinish_LinkLoadNormal_AlternateProtocol_spdy", start_to_finish_all_loads); PLT_HISTOGRAM( "PLT.StartToCommit_LinkLoadNormal_AlternateProtocol_spdy", start_to_commit); break; case DocumentState::NORMAL_LOAD: PLT_HISTOGRAM( "PLT.StartToFinish_NormalLoad_AlternateProtocol_spdy", start_to_finish_all_loads); PLT_HISTOGRAM( "PLT.StartToCommit_NormalLoad_AlternateProtocol_spdy", start_to_commit); break; default: break; } } } } } // Record SpdyCwnd field trial results. if (document_state->was_fetched_via_spdy()) { switch (load_type) { case DocumentState::LINK_LOAD_NORMAL: PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_LinkLoadNormal", "SpdyCwnd"), begin_to_finish_all_loads); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.StartToFinish_LinkLoadNormal", "SpdyCwnd"), start_to_finish_all_loads); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.StartToCommit_LinkLoadNormal", "SpdyCwnd"), start_to_commit); break; case DocumentState::NORMAL_LOAD: PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_NormalLoad", "SpdyCwnd"), begin_to_finish_all_loads); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.StartToFinish_NormalLoad", "SpdyCwnd"), start_to_finish_all_loads); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.StartToCommit_NormalLoad", "SpdyCwnd"), start_to_commit); break; default: break; } } // Record page load time and abandonment rates for proxy cases. if (document_state->was_fetched_via_proxy()) { if (scheme_type == URLPattern::SCHEME_HTTPS) { PLT_HISTOGRAM("PLT.StartToFinish.Proxy.https", start_to_finish_all_loads); UMA_HISTOGRAM_ENUMERATION("PLT.Abandoned.Proxy.https", abandoned_page ? 1 : 0, 2); } else { DCHECK(scheme_type == URLPattern::SCHEME_HTTP); PLT_HISTOGRAM("PLT.StartToFinish.Proxy.http", start_to_finish_all_loads); UMA_HISTOGRAM_ENUMERATION("PLT.Abandoned.Proxy.http", abandoned_page ? 1 : 0, 2); } } else { if (scheme_type == URLPattern::SCHEME_HTTPS) { PLT_HISTOGRAM("PLT.StartToFinish.NoProxy.https", start_to_finish_all_loads); UMA_HISTOGRAM_ENUMERATION("PLT.Abandoned.NoProxy.https", abandoned_page ? 1 : 0, 2); } else { DCHECK(scheme_type == URLPattern::SCHEME_HTTP); PLT_HISTOGRAM("PLT.StartToFinish.NoProxy.http", start_to_finish_all_loads); UMA_HISTOGRAM_ENUMERATION("PLT.Abandoned.NoProxy.http", abandoned_page ? 1 : 0, 2); } } // Histograms to determine if disabling overlapped TCP reads // has an impact on PLT. static const bool use_overlapped_read_histogram = base::FieldTrialList::TrialExists("OverlappedReadImpact"); if (use_overlapped_read_histogram) { UMA_HISTOGRAM_ENUMERATION( base::FieldTrial::MakeName("PLT.Abandoned", "OverlappedReadImpact"), abandoned_page ? 1 : 0, 2); UMA_HISTOGRAM_ENUMERATION( base::FieldTrial::MakeName("PLT.LoadType", "OverlappedReadImpact"), load_type, DocumentState::kLoadTypeMax); switch (load_type) { case DocumentState::NORMAL_LOAD: PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_NormalLoad", "OverlappedReadImpact"), begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_NORMAL: PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_LinkLoadNormal", "OverlappedReadImpact"), begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_RELOAD: PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_LinkLoadReload", "OverlappedReadImpact"), begin_to_finish_all_loads); break; case DocumentState::LINK_LOAD_CACHE_STALE_OK: PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_LinkLoadStaleOk", "OverlappedReadImpact"), begin_to_finish_all_loads); break; default: break; } } // Site isolation metrics. UMA_HISTOGRAM_COUNTS("SiteIsolation.PageLoadsWithCrossSiteFrameAccess", cross_origin_access_count_); UMA_HISTOGRAM_COUNTS("SiteIsolation.PageLoadsWithSameSiteFrameAccess", same_origin_access_count_); // Log the PLT to the info log. LogPageLoadTime(document_state, frame->dataSource()); // Record histograms for cache sensitivity analysis. static const bool cache_sensitivity_histogram = base::FieldTrialList::TrialExists("CacheSensitivityAnalysis"); if (cache_sensitivity_histogram) { PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinishDoc_CacheSensitivity", "CacheSensitivityAnalysis"), begin_to_finish_doc); PLT_HISTOGRAM(base::FieldTrial::MakeName( "PLT.BeginToFinish_CacheSensitivity", "CacheSensitivityAnalysis"), begin_to_finish_all_loads); } // Since there are currently no guarantees that renderer histograms will be // sent to the browser, we initiate a PostTask here to be sure that we send // the histograms we generated. Without this call, pages that don't have an // on-close-handler might generate data that is lost when the renderer is // shutdown abruptly (perchance because the user closed the tab). // TODO(jar) BUG=33233: This needs to be moved to a PostDelayedTask, and it // should post when the onload is complete, so that it doesn't interfere with // the next load. content::RenderThread::Get()->UpdateHistograms( content::kHistogramSynchronizerReservedSequenceNumber); } void PageLoadHistograms::ResetCrossFramePropertyAccess() { cross_origin_access_count_ = 0; same_origin_access_count_ = 0; } void PageLoadHistograms::FrameWillClose(WebFrame* frame) { Dump(frame); } void PageLoadHistograms::ClosePage() { // TODO(davemoore) This code should be removed once willClose() gets // called when a page is destroyed. page_load_histograms_.Dump() is safe // to call multiple times for the same frame, but it will simplify things. Dump(render_view()->GetWebView()->mainFrame()); ResetCrossFramePropertyAccess(); } void PageLoadHistograms::LogPageLoadTime(const DocumentState* document_state, const WebDataSource* ds) const { // Because this function gets called on every page load, // take extra care to optimize it away if logging is turned off. if (logging::LOG_INFO < logging::GetMinLogLevel()) return; DCHECK(document_state); DCHECK(ds); GURL url(ds->request().url()); Time start = document_state->start_load_time(); Time finish = document_state->finish_load_time(); // TODO(mbelshe): should we log more stats? VLOG(1) << "PLT: " << (finish - start).InMilliseconds() << "ms " << url.spec(); }