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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This header contains field trial and variations definitions for policies,
// mechanisms and features in the performance_manager component.
#include "components/performance_manager/public/features.h"
#include "base/feature_list.h"
#include "base/metrics/field_trial_params.h"
#include "base/time/time.h"
#include "build/build_config.h"
namespace performance_manager::features {
#if !BUILDFLAG(IS_ANDROID)
BASE_FEATURE(kBackgroundTabLoadingFromPerformanceManager,
"BackgroundTabLoadingFromPerformanceManager",
base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE_PARAM(size_t,
kBackgroundTabLoadingMinSiteEngagement,
&kBackgroundTabLoadingFromPerformanceManager,
"min_site_engagement",
0);
BASE_FEATURE_PARAM(bool,
kBackgroundTabLoadingRestoreMainFrameState,
&kBackgroundTabLoadingFromPerformanceManager,
"restore_main_frame_state",
true);
BASE_FEATURE(kPerformanceControlsPPMSurvey,
"PerformanceControlsPPMSurvey",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE_PARAM(base::TimeDelta,
kPerformanceControlsPPMSurveyMinDelay,
&kPerformanceControlsPPMSurvey,
"ppm_survey_min_delay",
base::Minutes(2));
BASE_FEATURE_PARAM(base::TimeDelta,
kPerformanceControlsPPMSurveyMaxDelay,
&kPerformanceControlsPPMSurvey,
"ppm_survey_max_delay",
base::Minutes(60));
BASE_FEATURE_PARAM(bool,
kPerformanceControlsPPMSurveyUniformSampleValue,
&kPerformanceControlsPPMSurvey,
"ppm_survey_uniform_sample",
true);
// Depending on platform, clients will be split into 1-3 segments based on the
// amount of physical RAM they have. "ppm_survey_segment_name1" through
// "ppm_survey_segment_name3" give the names of the segments, which will be
// included in the PPM survey string data.
//
// "ppm_survey_segment_max_memory_gb1" and "ppm_survey_segment_max_memory_gb2"
// define the upper bounds of segments 1 and 2. The lower bound of segment 1 is
// always 0 GB; if "ppm_survey_segment_max_memory_gb1" is 0, it has no upper
// bound so it's the only defined segment ("ppm_survey_segment_name2", etc, are
// ignored). Otherwise "ppm_survey_segment_max_memory_gb1" is the upper bound
// (inclusive) of segment 1 and the lower bound (exclusive) of segment 2.
//
// Likewise, if "ppm_survey_segment_max_memory_gb2" is 0, segment 2 has no upper
// bound so this platform has only 2 defined segments. Otherwise
// "ppm_survey_segment_max_memory_gb2" is the upper bound (inclusive) of segment
// 2 and the lower bound (exclusive) of segment 3. Segment 3 is the last segment
// that can be defined so it never has an upper bound.
//
// Comparing the client's physical RAM to the boundaries of each defined segment
// determines which one the client falls into. The default parameters give the
// trivial case with only 1 segment containing all users.
//
// If the name parameter of the client's segment is an empty string, that
// segment has already received enough survey responses so clients in that
// segment should not see the survey.
BASE_FEATURE_PARAM(std::string,
kPerformanceControlsPPMSurveySegmentName1,
&kPerformanceControlsPPMSurvey,
"ppm_survey_segment_name1",
// All clients fall into this segment when
// "ppm_survey_segment_max_memory_gb1" is 0.
"Default");
BASE_FEATURE_PARAM(std::string,
kPerformanceControlsPPMSurveySegmentName2,
&kPerformanceControlsPPMSurvey,
"ppm_survey_segment_name2",
// Default is "Invalid" since this should never be used when
// "ppm_survey_segment_max_memory_gb1" is 0.
"Invalid1");
BASE_FEATURE_PARAM(std::string,
kPerformanceControlsPPMSurveySegmentName3,
&kPerformanceControlsPPMSurvey,
"ppm_survey_segment_name3",
// Default is "Invalid" since this should never be used when
// "ppm_survey_segment_max_memory_gb1" is 0.
"Invalid2");
BASE_FEATURE_PARAM(size_t,
kPerformanceControlsPPMSurveySegmentMaxMemoryGB1,
&kPerformanceControlsPPMSurvey,
"ppm_survey_segment_max_memory_gb1",
0);
BASE_FEATURE_PARAM(size_t,
kPerformanceControlsPPMSurveySegmentMaxMemoryGB2,
&kPerformanceControlsPPMSurvey,
"ppm_survey_segment_max_memory_gb2",
0);
BASE_FEATURE(kPerformanceInterventionDemoMode,
"PerformanceInterventionDemoMode",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kPerformanceInterventionNotificationImprovements,
"PerformanceInterventionNotificationImprovements",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE_PARAM(base::TimeDelta,
kMinimumTimeBetweenReshow,
&kPerformanceInterventionNotificationImprovements,
"minimum_time_reshow",
base::Hours(1));
BASE_FEATURE_PARAM(int,
kAcceptanceRateWindowSize,
&kPerformanceInterventionNotificationImprovements,
"window_size",
10);
BASE_FEATURE_PARAM(int,
kScaleMaxTimesPerDay,
&kPerformanceInterventionNotificationImprovements,
"scale_max_times_per_day",
5);
BASE_FEATURE_PARAM(int,
kScaleMaxTimesPerWeek,
&kPerformanceInterventionNotificationImprovements,
"scale_max_times_per_week",
25);
BASE_FEATURE_PARAM(base::TimeDelta,
kNoAcceptanceBackOff,
&kPerformanceInterventionNotificationImprovements,
"no_acceptance_back_off",
base::Days(30));
BASE_FEATURE(kPerformanceInterventionNotificationStringImprovements,
"PerformanceInterventionNotificationStringImprovements",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE_PARAM(int,
kNotificationStringVersion,
&kPerformanceInterventionNotificationStringImprovements,
"string_version",
1);
#if BUILDFLAG(IS_CHROMEOS)
BASE_FEATURE(kUnthrottledTabProcessReporting,
"UnthrottledTabProcessReporting",
base::FEATURE_ENABLED_BY_DEFAULT);
#endif // BUILDFLAG(IS_CHROMEOS)
#endif
BASE_FEATURE(kPMProcessPriorityPolicy,
"PMProcessPriorityPolicy",
base::FEATURE_ENABLED_BY_DEFAULT);
const base::FeatureParam<bool> kInheritParentPriority{
&kPMProcessPriorityPolicy, "inherit_parent_priority", true};
const base::FeatureParam<bool> kRenderedOutOfViewIsNotVisible{
&kPMProcessPriorityPolicy, "rendered_out_of_view_is_not_visible", false};
const base::FeatureParam<bool> kNonSpareRendererHighInitialPriority{
&kPMProcessPriorityPolicy, "non_spare_renderer_high_initial_priority",
false};
BASE_FEATURE(kPMLoadingPageVoter,
"PMLoadingPageVoter",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kBFCachePerformanceManagerPolicy,
"BFCachePerformanceManagerPolicy",
base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE(kUrgentPageDiscarding,
"UrgentPageDiscarding",
base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE(kCPUMeasurementInFreezingPolicy,
"CPUMeasurementInFreezingPolicy",
base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE(kMemoryMeasurementInFreezingPolicy,
"MemoryMeasurementInFreezingPolicy",
base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE(kDiscardFrozenBrowsingInstancesWithGrowingPMF,
"DiscardFrozenBrowsingInstancesWithGrowingPMF",
base::FEATURE_ENABLED_BY_DEFAULT);
// Note: These params are associated with `kCPUMeasurementInFreezingPolicy`
// instead of `kFreezingOnBatterySaver` or
// `kDiscardFrozenBrowsingInstancesWithGrowingPMF`, to allow retrieving the
// value without activating these two features.
BASE_FEATURE_PARAM(int,
kFreezingMemoryGrowthThresholdToDiscardKb,
&kCPUMeasurementInFreezingPolicy,
"freezing_memory_growth_threshold_to_discard_kb",
/* 100 MB */ 100 * 1024);
BASE_FEATURE_PARAM(double,
kFreezingHighCPUProportion,
&kCPUMeasurementInFreezingPolicy,
"freezing_high_cpu_proportion",
0.05);
BASE_FEATURE_PARAM(base::TimeDelta,
kFreezingVisibleProtectionTime,
&kCPUMeasurementInFreezingPolicy,
"freezing_visible_protection_time",
base::Minutes(5));
BASE_FEATURE_PARAM(base::TimeDelta,
kFreezingAudioProtectionTime,
&kCPUMeasurementInFreezingPolicy,
"freezing_audio_protection_time",
base::Minutes(5));
BASE_FEATURE(kFreezingOnBatterySaver,
"FreezingOnBatterySaver",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kFreezingOnBatterySaverForTesting,
"FreezingOnBatterySaverForTesting",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kFreezingFollowsDiscardOptOut,
"FreezingFollowsDiscardOptOut",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kRecordFreezingEligibilityUKM,
"RecordFreezingEligibilityUKM",
base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE(kInfiniteTabsFreezing,
"InfiniteTabsFreezing",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE_PARAM(int,
kInfiniteTabsFreezing_NumProtectedTabs,
&kInfiniteTabsFreezing,
"num_protected_tabs",
5);
BASE_FEATURE_PARAM(base::TimeDelta,
kInfiniteTabsFreezing_UnfreezeInterval,
&kInfiniteTabsFreezing,
"unfreeze_interval",
base::Minutes(1));
BASE_FEATURE_PARAM(base::TimeDelta,
kInfiniteTabsFreezing_UnfreezeDuration,
&kInfiniteTabsFreezing,
"unfreeze_duration",
base::Seconds(5));
BASE_FEATURE(kResourceAttributionIncludeOrigins,
"ResourceAttributionIncludeOrigins",
base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE(kSeamlessRenderFrameSwap,
"SeamlessRenderFrameSwap",
base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE(kUnimportantFramesPriority,
"UnimportantFramesPriority",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kThrottleUnimportantFrameRate,
"ThrottleUnimportantFrameRate",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kKeepDefaultSearchEngineRendererAlive,
"KeepDefaultSearchEngineRendererAlive",
base::FEATURE_DISABLED_BY_DEFAULT);
} // namespace performance_manager::features
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