components/performance_manager/features.cc

// 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"
#include "build/chromeos_buildflags.h"

namespace performance_manager::features {

BASE_FEATURE(kRunOnMainThread,
             "RunPerformanceManagerOnMainThread",
             base::FEATURE_DISABLED_BY_DEFAULT);

BASE_FEATURE(kRunOnMainThreadSync,
             "RunPerformanceManagerOnMainThreadSync",
             base::FEATURE_DISABLED_BY_DEFAULT);

#if !BUILDFLAG(IS_ANDROID)
BASE_FEATURE(kBackgroundTabLoadingFromPerformanceManager,
             "BackgroundTabLoadingFromPerformanceManager",
             base::FEATURE_DISABLED_BY_DEFAULT);

BASE_FEATURE(kBatterySaverModeRenderTuning,
             "BatterySaverModeRenderTuning",
             base::FEATURE_DISABLED_BY_DEFAULT);

BASE_FEATURE(kPerformanceControlsPerformanceSurvey,
             "PerformanceControlsPerformanceSurvey",
             base::FEATURE_DISABLED_BY_DEFAULT);

BASE_FEATURE(kPerformanceControlsBatteryPerformanceSurvey,
             "PerformanceControlsBatteryPerformanceSurvey",
             base::FEATURE_DISABLED_BY_DEFAULT);

// The variable was renamed to "MemorySaver" but the experiment name remains as
// "HighEfficiency" because it is already running (crbug.com/1493843).
BASE_FEATURE(kPerformanceControlsMemorySaverOptOutSurvey,
             "PerformanceControlsHighEfficiencyOptOutSurvey",
             base::FEATURE_DISABLED_BY_DEFAULT);

BASE_FEATURE(kPerformanceControlsBatterySaverOptOutSurvey,
             "PerformanceControlsBatterySaverOptOutSurvey",
             base::FEATURE_DISABLED_BY_DEFAULT);

const base::FeatureParam<base::TimeDelta>
    kPerformanceControlsBatterySurveyLookback{
        &kPerformanceControlsBatteryPerformanceSurvey, "battery_lookback",
        base::Days(8)};

#if BUILDFLAG(IS_WIN)
BASE_FEATURE(kPrefetchVirtualMemoryPolicy,
             "PrefetchVirtualMemoryPolicy",
             base::FEATURE_DISABLED_BY_DEFAULT);
#endif

// The variable was renamed to "MemorySaver" but the experiment name remains as
// "HighEfficiency" because it is already running (crbug.com/1493843).
BASE_FEATURE(kMemorySaverMultistateMode,
             "HighEfficiencyMultistateMode",
             base::FEATURE_DISABLED_BY_DEFAULT);
const base::FeatureParam<bool> kMemorySaverShowRecommendedBadge{
    &kMemorySaverMultistateMode, "show_recommended_badge", false};

BASE_FEATURE(kPerformanceControlsSidePanel,
             "PerformanceControlsSidePanel",
             base::FEATURE_DISABLED_BY_DEFAULT);

BASE_FEATURE(kPerformanceCPUIntervention,
             "PerformanceCPUIntervention",
             base::FEATURE_DISABLED_BY_DEFAULT);

const base::FeatureParam<base::TimeDelta> kCPUTimeOverThreshold{
    &kPerformanceCPUIntervention, "cpu_time_over_threshold", base::Seconds(60)};
const base::FeatureParam<base::TimeDelta> kCPUSampleFrequency{
    &kPerformanceCPUIntervention, "cpu_sample_frequency", base::Seconds(15)};

const base::FeatureParam<int> kCPUDegradedHealthPercentageThreshold{
    &kPerformanceCPUIntervention, "cpu_degraded_percent_threshold", 50};
const base::FeatureParam<int> kCPUUnhealthyPercentageThreshold{
    &kPerformanceCPUIntervention, "cpu_unhealthy_percent_threshold", 75};

const base::FeatureParam<int> kCPUMaxActionableTabs{
    &kPerformanceCPUIntervention, "cpu_max_actionable_tabs", 4};

const base::FeatureParam<int> kMinimumActionableTabCPUPercentage{
    &kPerformanceCPUIntervention, "minimum_actionable_tab_cpu", 10};

BASE_FEATURE(kPerformanceMemoryIntervention,
             "PerformanceMemoryIntervention",
             base::FEATURE_DISABLED_BY_DEFAULT);

const base::FeatureParam<base::TimeDelta> kMemoryTimeOverThreshold{
    &kPerformanceMemoryIntervention, "memory_time_over_threshold",
    base::Seconds(60)};

const base::FeatureParam<int> kMemoryFreePercentThreshold{
    &kPerformanceMemoryIntervention, "memory_free_percent_threshold", 10};
const base::FeatureParam<int> kMemoryFreeBytesThreshold{
    &kPerformanceMemoryIntervention, "memory_free_bytes_threshold",
    1024 * 1024 * 1024};

#if BUILDFLAG(IS_CHROMEOS_ASH)
BASE_FEATURE(kAshUrgentDiscardingFromPerformanceManager,
             "AshUrgentDiscardingFromPerformanceManager",
             base::FEATURE_DISABLED_BY_DEFAULT);
#endif  // BUILDFLAG(IS_CHROMEOS_ASH)

#if BUILDFLAG(IS_CHROMEOS)
BASE_FEATURE(kUnthrottledTabProcessReporting,
             "UnthrottledTabProcessReporting",
             base::FEATURE_DISABLED_BY_DEFAULT);
#endif  // BUILDFLAG(IS_CHROMEOS)

#endif

BASE_FEATURE(kPMProcessPriorityPolicy,
             "PMProcessPriorityPolicy",
             base::FEATURE_DISABLED_BY_DEFAULT);

const base::FeatureParam<bool> kDownvoteAdFrames{&kPMProcessPriorityPolicy,
                                                 "downvote_ad_frames", false};

BASE_FEATURE(kModalMemorySaver,
             "ModalMemorySaver",
             base::FEATURE_ENABLED_BY_DEFAULT);

const base::FeatureParam<int> kModalMemorySaverMode{
    &kModalMemorySaver,
    "modal_memory_saver_mode",
    2,
};

BASE_FEATURE(kBFCachePerformanceManagerPolicy,
             "BFCachePerformanceManagerPolicy",
             base::FEATURE_ENABLED_BY_DEFAULT);

BASE_FEATURE(kUrgentPageDiscarding,
             "UrgentPageDiscarding",
             base::FEATURE_ENABLED_BY_DEFAULT);

BASE_FEATURE(kCPUInterventionEvaluationLogging,
             "CPUInterventionEvaluationLogging",
             base::FEATURE_DISABLED_BY_DEFAULT);

const base::FeatureParam<base::TimeDelta> kDelayBeforeLogging{
    &kCPUInterventionEvaluationLogging, "delay_before_logging",
    base::Seconds(60)};

const base::FeatureParam<int> kThresholdChromeCPUPercent{
    &kCPUInterventionEvaluationLogging, "threshold_chrome_cpu_percent", 25};

BASE_FEATURE(kResourceAttributionValidation,
             "ResourceAttributionValidation",
             base::FEATURE_DISABLED_BY_DEFAULT);

}  // namespace performance_manager::features