Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.am; |
| 18 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 19 | import static android.os.Process.THREAD_PRIORITY_FOREGROUND; |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 20 | |
| 21 | import android.app.ActivityManager; |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 22 | import android.app.ActivityThread; |
Ben Murdoch | fdc5593 | 2019-01-30 10:43:15 +0000 | [diff] [blame] | 23 | import android.os.Debug; |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 24 | import android.os.Handler; |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 25 | import android.os.Message; |
| 26 | import android.os.Process; |
| 27 | import android.os.SystemClock; |
| 28 | import android.os.Trace; |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 29 | import android.provider.DeviceConfig; |
| 30 | import android.provider.DeviceConfig.OnPropertyChangedListener; |
| 31 | import android.text.TextUtils; |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 32 | import android.util.EventLog; |
| 33 | import android.util.StatsLog; |
| 34 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 35 | import com.android.internal.annotations.GuardedBy; |
| 36 | import com.android.internal.annotations.VisibleForTesting; |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 37 | import com.android.server.ServiceThread; |
| 38 | |
| 39 | import java.io.FileOutputStream; |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 40 | import java.io.PrintWriter; |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 41 | import java.util.ArrayList; |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 42 | import java.util.Random; |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 43 | |
| 44 | public final class AppCompactor { |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 45 | |
Matt Pape | 40074da | 2019-02-12 13:53:26 -0800 | [diff] [blame] | 46 | // Flags stored in the DeviceConfig API. |
| 47 | @VisibleForTesting static final String KEY_USE_COMPACTION = "use_compaction"; |
| 48 | @VisibleForTesting static final String KEY_COMPACT_ACTION_1 = "compact_action_1"; |
| 49 | @VisibleForTesting static final String KEY_COMPACT_ACTION_2 = "compact_action_2"; |
| 50 | @VisibleForTesting static final String KEY_COMPACT_THROTTLE_1 = "compact_throttle_1"; |
| 51 | @VisibleForTesting static final String KEY_COMPACT_THROTTLE_2 = "compact_throttle_2"; |
| 52 | @VisibleForTesting static final String KEY_COMPACT_THROTTLE_3 = "compact_throttle_3"; |
| 53 | @VisibleForTesting static final String KEY_COMPACT_THROTTLE_4 = "compact_throttle_4"; |
Tim Murray | bf3f369 | 2019-02-19 14:29:39 -0800 | [diff] [blame] | 54 | @VisibleForTesting static final String KEY_COMPACT_THROTTLE_5 = "compact_throttle_5"; |
| 55 | @VisibleForTesting static final String KEY_COMPACT_THROTTLE_6 = "compact_throttle_6"; |
Matt Pape | 40074da | 2019-02-12 13:53:26 -0800 | [diff] [blame] | 56 | @VisibleForTesting static final String KEY_COMPACT_STATSD_SAMPLE_RATE = |
| 57 | "compact_statsd_sample_rate"; |
| 58 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 59 | // Phenotype sends int configurations and we map them to the strings we'll use on device, |
| 60 | // preventing a weird string value entering the kernel. |
| 61 | private static final int COMPACT_ACTION_FILE_FLAG = 1; |
| 62 | private static final int COMPACT_ACTION_ANON_FLAG = 2; |
| 63 | private static final int COMPACT_ACTION_FULL_FLAG = 3; |
Tim Murray | f96451b | 2019-01-30 18:36:48 -0800 | [diff] [blame] | 64 | private static final int COMPACT_ACTION_NONE_FLAG = 4; |
| 65 | private static final String COMPACT_ACTION_NONE = ""; |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 66 | private static final String COMPACT_ACTION_FILE = "file"; |
| 67 | private static final String COMPACT_ACTION_ANON = "anon"; |
| 68 | private static final String COMPACT_ACTION_FULL = "all"; |
| 69 | |
| 70 | // Defaults for phenotype flags. |
| 71 | @VisibleForTesting static final Boolean DEFAULT_USE_COMPACTION = false; |
| 72 | @VisibleForTesting static final int DEFAULT_COMPACT_ACTION_1 = COMPACT_ACTION_FILE_FLAG; |
| 73 | @VisibleForTesting static final int DEFAULT_COMPACT_ACTION_2 = COMPACT_ACTION_FULL_FLAG; |
| 74 | @VisibleForTesting static final long DEFAULT_COMPACT_THROTTLE_1 = 5_000; |
| 75 | @VisibleForTesting static final long DEFAULT_COMPACT_THROTTLE_2 = 10_000; |
| 76 | @VisibleForTesting static final long DEFAULT_COMPACT_THROTTLE_3 = 500; |
| 77 | @VisibleForTesting static final long DEFAULT_COMPACT_THROTTLE_4 = 10_000; |
Tim Murray | bf3f369 | 2019-02-19 14:29:39 -0800 | [diff] [blame] | 78 | @VisibleForTesting static final long DEFAULT_COMPACT_THROTTLE_5 = 10 * 60 * 1000; |
| 79 | @VisibleForTesting static final long DEFAULT_COMPACT_THROTTLE_6 = 10 * 60 * 1000; |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 80 | // The sampling rate to push app compaction events into statsd for upload. |
| 81 | @VisibleForTesting static final float DEFAULT_STATSD_SAMPLE_RATE = 0.1f; |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 82 | |
| 83 | @VisibleForTesting |
| 84 | interface PropertyChangedCallbackForTest { |
| 85 | void onPropertyChanged(); |
| 86 | } |
| 87 | private PropertyChangedCallbackForTest mTestCallback; |
| 88 | |
| 89 | // Handler constants. |
Tim Murray | bbcbc2c | 2018-12-20 13:30:59 -0800 | [diff] [blame] | 90 | static final int COMPACT_PROCESS_SOME = 1; |
| 91 | static final int COMPACT_PROCESS_FULL = 2; |
Tim Murray | bf3f369 | 2019-02-19 14:29:39 -0800 | [diff] [blame] | 92 | static final int COMPACT_PROCESS_PERSISTENT = 3; |
| 93 | static final int COMPACT_PROCESS_BFGS = 4; |
Tim Murray | bbcbc2c | 2018-12-20 13:30:59 -0800 | [diff] [blame] | 94 | static final int COMPACT_PROCESS_MSG = 1; |
Tim Murray | 31faf3f | 2019-03-01 20:25:07 -0800 | [diff] [blame] | 95 | static final int COMPACT_SYSTEM_MSG = 2; |
Tim Murray | bbcbc2c | 2018-12-20 13:30:59 -0800 | [diff] [blame] | 96 | |
| 97 | /** |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 98 | * This thread must be moved to the system background cpuset. |
| 99 | * If that doesn't happen, it's probably going to draw a lot of power. |
| 100 | * However, this has to happen after the first updateOomAdjLocked, because |
| 101 | * that will wipe out the cpuset assignment for system_server threads. |
| 102 | * Accordingly, this is in the AMS constructor. |
| 103 | */ |
| 104 | final ServiceThread mCompactionThread; |
| 105 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 106 | private final ArrayList<ProcessRecord> mPendingCompactionProcesses = |
| 107 | new ArrayList<ProcessRecord>(); |
| 108 | private final ActivityManagerService mAm; |
| 109 | private final OnPropertyChangedListener mOnFlagsChangedListener = |
| 110 | new OnPropertyChangedListener() { |
| 111 | @Override |
| 112 | public void onPropertyChanged(String namespace, String name, String value) { |
| 113 | synchronized (mPhenotypeFlagLock) { |
| 114 | if (KEY_USE_COMPACTION.equals(name)) { |
| 115 | updateUseCompaction(); |
| 116 | } else if (KEY_COMPACT_ACTION_1.equals(name) |
| 117 | || KEY_COMPACT_ACTION_2.equals(name)) { |
| 118 | updateCompactionActions(); |
| 119 | } else if (KEY_COMPACT_THROTTLE_1.equals(name) |
| 120 | || KEY_COMPACT_THROTTLE_2.equals(name) |
| 121 | || KEY_COMPACT_THROTTLE_3.equals(name) |
| 122 | || KEY_COMPACT_THROTTLE_4.equals(name)) { |
| 123 | updateCompactionThrottles(); |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 124 | } else if (KEY_COMPACT_STATSD_SAMPLE_RATE.equals(name)) { |
| 125 | updateStatsdSampleRate(); |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 126 | } |
| 127 | } |
| 128 | if (mTestCallback != null) { |
| 129 | mTestCallback.onPropertyChanged(); |
| 130 | } |
| 131 | } |
| 132 | }; |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 133 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 134 | private final Object mPhenotypeFlagLock = new Object(); |
Tim Murray | bbcbc2c | 2018-12-20 13:30:59 -0800 | [diff] [blame] | 135 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 136 | // Configured by phenotype. Updates from the server take effect immediately. |
| 137 | @GuardedBy("mPhenotypeFlagLock") |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 138 | @VisibleForTesting volatile String mCompactActionSome = |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 139 | compactActionIntToString(DEFAULT_COMPACT_ACTION_1); |
| 140 | @GuardedBy("mPhenotypeFlagLock") |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 141 | @VisibleForTesting volatile String mCompactActionFull = |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 142 | compactActionIntToString(DEFAULT_COMPACT_ACTION_2); |
| 143 | @GuardedBy("mPhenotypeFlagLock") |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 144 | @VisibleForTesting volatile long mCompactThrottleSomeSome = DEFAULT_COMPACT_THROTTLE_1; |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 145 | @GuardedBy("mPhenotypeFlagLock") |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 146 | @VisibleForTesting volatile long mCompactThrottleSomeFull = DEFAULT_COMPACT_THROTTLE_2; |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 147 | @GuardedBy("mPhenotypeFlagLock") |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 148 | @VisibleForTesting volatile long mCompactThrottleFullSome = DEFAULT_COMPACT_THROTTLE_3; |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 149 | @GuardedBy("mPhenotypeFlagLock") |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 150 | @VisibleForTesting volatile long mCompactThrottleFullFull = DEFAULT_COMPACT_THROTTLE_4; |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 151 | @GuardedBy("mPhenotypeFlagLock") |
Tim Murray | bf3f369 | 2019-02-19 14:29:39 -0800 | [diff] [blame] | 152 | @VisibleForTesting volatile long mCompactThrottleBFGS = DEFAULT_COMPACT_THROTTLE_5; |
| 153 | @GuardedBy("mPhenotypeFlagLock") |
| 154 | @VisibleForTesting volatile long mCompactThrottlePersistent = DEFAULT_COMPACT_THROTTLE_6; |
| 155 | @GuardedBy("mPhenotypeFlagLock") |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 156 | private volatile boolean mUseCompaction = DEFAULT_USE_COMPACTION; |
| 157 | |
| 158 | private final Random mRandom = new Random(); |
| 159 | @GuardedBy("mPhenotypeFlagLock") |
| 160 | @VisibleForTesting volatile float mStatsdSampleRate = DEFAULT_STATSD_SAMPLE_RATE; |
Tim Murray | bbcbc2c | 2018-12-20 13:30:59 -0800 | [diff] [blame] | 161 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 162 | // Handler on which compaction runs. |
| 163 | private Handler mCompactionHandler; |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 164 | |
| 165 | public AppCompactor(ActivityManagerService am) { |
| 166 | mAm = am; |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 167 | mCompactionThread = new ServiceThread("CompactionThread", |
| 168 | THREAD_PRIORITY_FOREGROUND, true); |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 169 | } |
| 170 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 171 | @VisibleForTesting |
| 172 | AppCompactor(ActivityManagerService am, PropertyChangedCallbackForTest callback) { |
| 173 | this(am); |
| 174 | mTestCallback = callback; |
| 175 | } |
| 176 | |
| 177 | /** |
| 178 | * Reads phenotype config to determine whether app compaction is enabled or not and |
| 179 | * starts the background thread if necessary. |
| 180 | */ |
| 181 | public void init() { |
Matt Pape | 40074da | 2019-02-12 13:53:26 -0800 | [diff] [blame] | 182 | DeviceConfig.addOnPropertyChangedListener(DeviceConfig.NAMESPACE_ACTIVITY_MANAGER, |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 183 | ActivityThread.currentApplication().getMainExecutor(), mOnFlagsChangedListener); |
| 184 | synchronized (mPhenotypeFlagLock) { |
| 185 | updateUseCompaction(); |
| 186 | updateCompactionActions(); |
| 187 | updateCompactionThrottles(); |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 188 | updateStatsdSampleRate(); |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 189 | } |
Tim Murray | 0a796c1 | 2019-02-05 13:03:16 -0800 | [diff] [blame] | 190 | Process.setThreadGroupAndCpuset(mCompactionThread.getThreadId(), |
| 191 | Process.THREAD_GROUP_SYSTEM); |
| 192 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 193 | } |
| 194 | |
| 195 | /** |
| 196 | * Returns whether compaction is enabled. |
| 197 | */ |
| 198 | public boolean useCompaction() { |
| 199 | synchronized (mPhenotypeFlagLock) { |
| 200 | return mUseCompaction; |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | @GuardedBy("mAm") |
| 205 | void dump(PrintWriter pw) { |
| 206 | pw.println("AppCompactor settings"); |
| 207 | synchronized (mPhenotypeFlagLock) { |
| 208 | pw.println(" " + KEY_USE_COMPACTION + "=" + mUseCompaction); |
| 209 | pw.println(" " + KEY_COMPACT_ACTION_1 + "=" + mCompactActionSome); |
| 210 | pw.println(" " + KEY_COMPACT_ACTION_2 + "=" + mCompactActionFull); |
| 211 | pw.println(" " + KEY_COMPACT_THROTTLE_1 + "=" + mCompactThrottleSomeSome); |
| 212 | pw.println(" " + KEY_COMPACT_THROTTLE_2 + "=" + mCompactThrottleSomeFull); |
| 213 | pw.println(" " + KEY_COMPACT_THROTTLE_3 + "=" + mCompactThrottleFullSome); |
| 214 | pw.println(" " + KEY_COMPACT_THROTTLE_4 + "=" + mCompactThrottleFullFull); |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 215 | pw.println(" " + KEY_COMPACT_STATSD_SAMPLE_RATE + "=" + mStatsdSampleRate); |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 216 | } |
| 217 | } |
| 218 | |
| 219 | @GuardedBy("mAm") |
| 220 | void compactAppSome(ProcessRecord app) { |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 221 | app.reqCompactAction = COMPACT_PROCESS_SOME; |
| 222 | mPendingCompactionProcesses.add(app); |
| 223 | mCompactionHandler.sendMessage( |
| 224 | mCompactionHandler.obtainMessage( |
Ben Murdoch | 885c21b | 2019-03-15 18:02:04 +0000 | [diff] [blame] | 225 | COMPACT_PROCESS_MSG, app.setAdj, app.setProcState)); |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 226 | } |
| 227 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 228 | @GuardedBy("mAm") |
| 229 | void compactAppFull(ProcessRecord app) { |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 230 | app.reqCompactAction = COMPACT_PROCESS_FULL; |
| 231 | mPendingCompactionProcesses.add(app); |
| 232 | mCompactionHandler.sendMessage( |
| 233 | mCompactionHandler.obtainMessage( |
Ben Murdoch | 885c21b | 2019-03-15 18:02:04 +0000 | [diff] [blame] | 234 | COMPACT_PROCESS_MSG, app.setAdj, app.setProcState)); |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 235 | |
| 236 | } |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 237 | |
Tim Murray | bf3f369 | 2019-02-19 14:29:39 -0800 | [diff] [blame] | 238 | @GuardedBy("mAm") |
| 239 | void compactAppPersistent(ProcessRecord app) { |
| 240 | app.reqCompactAction = COMPACT_PROCESS_PERSISTENT; |
| 241 | mPendingCompactionProcesses.add(app); |
| 242 | mCompactionHandler.sendMessage( |
| 243 | mCompactionHandler.obtainMessage( |
| 244 | COMPACT_PROCESS_MSG, app.curAdj, app.setProcState)); |
| 245 | } |
| 246 | |
| 247 | @GuardedBy("mAm") |
| 248 | boolean shouldCompactPersistent(ProcessRecord app, long now) { |
| 249 | return (app.lastCompactTime == 0 |
| 250 | || (now - app.lastCompactTime) > mCompactThrottlePersistent); |
| 251 | } |
| 252 | |
| 253 | @GuardedBy("mAm") |
| 254 | void compactAppBfgs(ProcessRecord app) { |
| 255 | app.reqCompactAction = COMPACT_PROCESS_BFGS; |
| 256 | mPendingCompactionProcesses.add(app); |
| 257 | mCompactionHandler.sendMessage( |
| 258 | mCompactionHandler.obtainMessage( |
| 259 | COMPACT_PROCESS_MSG, app.curAdj, app.setProcState)); |
| 260 | } |
| 261 | |
| 262 | @GuardedBy("mAm") |
| 263 | boolean shouldCompactBFGS(ProcessRecord app, long now) { |
| 264 | return (app.lastCompactTime == 0 |
| 265 | || (now - app.lastCompactTime) > mCompactThrottleBFGS); |
| 266 | } |
| 267 | |
Tim Murray | 31faf3f | 2019-03-01 20:25:07 -0800 | [diff] [blame] | 268 | @GuardedBy("mAm") |
| 269 | void compactAllSystem() { |
| 270 | if (mUseCompaction) { |
| 271 | mCompactionHandler.sendMessage(mCompactionHandler.obtainMessage( |
| 272 | COMPACT_SYSTEM_MSG)); |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | private native void compactSystem(); |
| 277 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 278 | /** |
| 279 | * Reads the flag value from DeviceConfig to determine whether app compaction |
| 280 | * should be enabled, and starts/stops the compaction thread as needed. |
| 281 | */ |
| 282 | @GuardedBy("mPhenotypeFlagLock") |
| 283 | private void updateUseCompaction() { |
Stanislav Zholnin | 632c9152 | 2019-03-07 15:46:27 +0000 | [diff] [blame] | 284 | mUseCompaction = DeviceConfig.getBoolean(DeviceConfig.NAMESPACE_ACTIVITY_MANAGER, |
| 285 | KEY_USE_COMPACTION, DEFAULT_USE_COMPACTION); |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 286 | if (mUseCompaction && !mCompactionThread.isAlive()) { |
| 287 | mCompactionThread.start(); |
| 288 | mCompactionHandler = new MemCompactionHandler(); |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | @GuardedBy("mPhenotypeFlagLock") |
| 293 | private void updateCompactionActions() { |
Stanislav Zholnin | 632c9152 | 2019-03-07 15:46:27 +0000 | [diff] [blame] | 294 | int compactAction1 = DeviceConfig.getInt(DeviceConfig.NAMESPACE_ACTIVITY_MANAGER, |
| 295 | KEY_COMPACT_ACTION_1, DEFAULT_COMPACT_ACTION_1); |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 296 | |
Stanislav Zholnin | 632c9152 | 2019-03-07 15:46:27 +0000 | [diff] [blame] | 297 | int compactAction2 = DeviceConfig.getInt(DeviceConfig.NAMESPACE_ACTIVITY_MANAGER, |
| 298 | KEY_COMPACT_ACTION_2, DEFAULT_COMPACT_ACTION_2); |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 299 | |
| 300 | mCompactActionSome = compactActionIntToString(compactAction1); |
| 301 | mCompactActionFull = compactActionIntToString(compactAction2); |
| 302 | } |
| 303 | |
| 304 | @GuardedBy("mPhenotypeFlagLock") |
| 305 | private void updateCompactionThrottles() { |
| 306 | boolean useThrottleDefaults = false; |
| 307 | String throttleSomeSomeFlag = |
Matt Pape | 40074da | 2019-02-12 13:53:26 -0800 | [diff] [blame] | 308 | DeviceConfig.getProperty(DeviceConfig.NAMESPACE_ACTIVITY_MANAGER, |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 309 | KEY_COMPACT_THROTTLE_1); |
| 310 | String throttleSomeFullFlag = |
Matt Pape | 40074da | 2019-02-12 13:53:26 -0800 | [diff] [blame] | 311 | DeviceConfig.getProperty(DeviceConfig.NAMESPACE_ACTIVITY_MANAGER, |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 312 | KEY_COMPACT_THROTTLE_2); |
| 313 | String throttleFullSomeFlag = |
Matt Pape | 40074da | 2019-02-12 13:53:26 -0800 | [diff] [blame] | 314 | DeviceConfig.getProperty(DeviceConfig.NAMESPACE_ACTIVITY_MANAGER, |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 315 | KEY_COMPACT_THROTTLE_3); |
| 316 | String throttleFullFullFlag = |
Matt Pape | 40074da | 2019-02-12 13:53:26 -0800 | [diff] [blame] | 317 | DeviceConfig.getProperty(DeviceConfig.NAMESPACE_ACTIVITY_MANAGER, |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 318 | KEY_COMPACT_THROTTLE_4); |
Tim Murray | bf3f369 | 2019-02-19 14:29:39 -0800 | [diff] [blame] | 319 | String throttleBFGSFlag = |
| 320 | DeviceConfig.getProperty(DeviceConfig.NAMESPACE_ACTIVITY_MANAGER, |
| 321 | KEY_COMPACT_THROTTLE_5); |
| 322 | String throttlePersistentFlag = |
| 323 | DeviceConfig.getProperty(DeviceConfig.NAMESPACE_ACTIVITY_MANAGER, |
| 324 | KEY_COMPACT_THROTTLE_6); |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 325 | |
| 326 | if (TextUtils.isEmpty(throttleSomeSomeFlag) || TextUtils.isEmpty(throttleSomeFullFlag) |
| 327 | || TextUtils.isEmpty(throttleFullSomeFlag) |
Tim Murray | bf3f369 | 2019-02-19 14:29:39 -0800 | [diff] [blame] | 328 | || TextUtils.isEmpty(throttleFullFullFlag) |
| 329 | || TextUtils.isEmpty(throttleBFGSFlag) |
| 330 | || TextUtils.isEmpty(throttlePersistentFlag)) { |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 331 | // Set defaults for all if any are not set. |
| 332 | useThrottleDefaults = true; |
| 333 | } else { |
| 334 | try { |
| 335 | mCompactThrottleSomeSome = Integer.parseInt(throttleSomeSomeFlag); |
| 336 | mCompactThrottleSomeFull = Integer.parseInt(throttleSomeFullFlag); |
| 337 | mCompactThrottleFullSome = Integer.parseInt(throttleFullSomeFlag); |
| 338 | mCompactThrottleFullFull = Integer.parseInt(throttleFullFullFlag); |
Tim Murray | bf3f369 | 2019-02-19 14:29:39 -0800 | [diff] [blame] | 339 | mCompactThrottleBFGS = Integer.parseInt(throttleBFGSFlag); |
| 340 | mCompactThrottlePersistent = Integer.parseInt(throttlePersistentFlag); |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 341 | } catch (NumberFormatException e) { |
| 342 | useThrottleDefaults = true; |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | if (useThrottleDefaults) { |
| 347 | mCompactThrottleSomeSome = DEFAULT_COMPACT_THROTTLE_1; |
| 348 | mCompactThrottleSomeFull = DEFAULT_COMPACT_THROTTLE_2; |
| 349 | mCompactThrottleFullSome = DEFAULT_COMPACT_THROTTLE_3; |
| 350 | mCompactThrottleFullFull = DEFAULT_COMPACT_THROTTLE_4; |
Tim Murray | bf3f369 | 2019-02-19 14:29:39 -0800 | [diff] [blame] | 351 | mCompactThrottleBFGS = DEFAULT_COMPACT_THROTTLE_5; |
| 352 | mCompactThrottlePersistent = DEFAULT_COMPACT_THROTTLE_6; |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 353 | } |
| 354 | } |
| 355 | |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 356 | @GuardedBy("mPhenotypeFlagLock") |
| 357 | private void updateStatsdSampleRate() { |
Stanislav Zholnin | 632c9152 | 2019-03-07 15:46:27 +0000 | [diff] [blame] | 358 | mStatsdSampleRate = DeviceConfig.getFloat(DeviceConfig.NAMESPACE_ACTIVITY_MANAGER, |
| 359 | KEY_COMPACT_STATSD_SAMPLE_RATE, DEFAULT_STATSD_SAMPLE_RATE); |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 360 | mStatsdSampleRate = Math.min(1.0f, Math.max(0.0f, mStatsdSampleRate)); |
| 361 | } |
| 362 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 363 | @VisibleForTesting |
| 364 | static String compactActionIntToString(int action) { |
| 365 | switch(action) { |
Tim Murray | f96451b | 2019-01-30 18:36:48 -0800 | [diff] [blame] | 366 | case COMPACT_ACTION_NONE_FLAG: |
| 367 | return COMPACT_ACTION_NONE; |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 368 | case COMPACT_ACTION_FILE_FLAG: |
| 369 | return COMPACT_ACTION_FILE; |
| 370 | case COMPACT_ACTION_ANON_FLAG: |
| 371 | return COMPACT_ACTION_ANON; |
| 372 | case COMPACT_ACTION_FULL_FLAG: |
| 373 | return COMPACT_ACTION_FULL; |
| 374 | default: |
Tim Murray | f96451b | 2019-01-30 18:36:48 -0800 | [diff] [blame] | 375 | return COMPACT_ACTION_NONE; |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 376 | } |
| 377 | } |
| 378 | |
| 379 | private final class MemCompactionHandler extends Handler { |
| 380 | private MemCompactionHandler() { |
| 381 | super(mCompactionThread.getLooper()); |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 382 | } |
| 383 | |
| 384 | @Override |
| 385 | public void handleMessage(Message msg) { |
| 386 | switch (msg.what) { |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 387 | case COMPACT_PROCESS_MSG: { |
| 388 | long start = SystemClock.uptimeMillis(); |
| 389 | ProcessRecord proc; |
| 390 | int pid; |
| 391 | String action; |
| 392 | final String name; |
| 393 | int pendingAction, lastCompactAction; |
| 394 | long lastCompactTime; |
| 395 | synchronized (mAm) { |
| 396 | proc = mPendingCompactionProcesses.remove(0); |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 397 | |
Tim Murray | bf3f369 | 2019-02-19 14:29:39 -0800 | [diff] [blame] | 398 | pendingAction = proc.reqCompactAction; |
| 399 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 400 | // don't compact if the process has returned to perceptible |
Tim Murray | bf3f369 | 2019-02-19 14:29:39 -0800 | [diff] [blame] | 401 | // and this is only a cached/home/prev compaction |
| 402 | if ((pendingAction == COMPACT_PROCESS_SOME |
| 403 | || pendingAction == COMPACT_PROCESS_FULL) |
| 404 | && (proc.setAdj <= ProcessList.PERCEPTIBLE_APP_ADJ)) { |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 405 | return; |
| 406 | } |
| 407 | |
| 408 | pid = proc.pid; |
| 409 | name = proc.processName; |
Tim Murray | bf3f369 | 2019-02-19 14:29:39 -0800 | [diff] [blame] | 410 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 411 | lastCompactAction = proc.lastCompactAction; |
| 412 | lastCompactTime = proc.lastCompactTime; |
| 413 | } |
| 414 | |
| 415 | if (pid == 0) { |
| 416 | // not a real process, either one being launched or one being killed |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 417 | return; |
| 418 | } |
| 419 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 420 | // basic throttling |
| 421 | // use the Phenotype flag knobs to determine whether current/prevous |
| 422 | // compaction combo should be throtted or not |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 423 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 424 | // Note that we explicitly don't take mPhenotypeFlagLock here as the flags |
| 425 | // should very seldom change, and taking the risk of using the wrong action is |
| 426 | // preferable to taking the lock for every single compaction action. |
Tim Murray | bf3f369 | 2019-02-19 14:29:39 -0800 | [diff] [blame] | 427 | if (lastCompactTime != 0) { |
| 428 | if (pendingAction == COMPACT_PROCESS_SOME) { |
| 429 | if ((lastCompactAction == COMPACT_PROCESS_SOME |
| 430 | && (start - lastCompactTime < mCompactThrottleSomeSome)) |
| 431 | || (lastCompactAction == COMPACT_PROCESS_FULL |
| 432 | && (start - lastCompactTime |
| 433 | < mCompactThrottleSomeFull))) { |
| 434 | return; |
| 435 | } |
| 436 | } else if (pendingAction == COMPACT_PROCESS_FULL) { |
| 437 | if ((lastCompactAction == COMPACT_PROCESS_SOME |
| 438 | && (start - lastCompactTime < mCompactThrottleFullSome)) |
| 439 | || (lastCompactAction == COMPACT_PROCESS_FULL |
| 440 | && (start - lastCompactTime |
| 441 | < mCompactThrottleFullFull))) { |
| 442 | return; |
| 443 | } |
| 444 | } else if (pendingAction == COMPACT_PROCESS_PERSISTENT) { |
| 445 | if (start - lastCompactTime < mCompactThrottlePersistent) { |
| 446 | return; |
| 447 | } |
| 448 | } else if (pendingAction == COMPACT_PROCESS_BFGS) { |
| 449 | if (start - lastCompactTime < mCompactThrottleBFGS) { |
| 450 | return; |
| 451 | } |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 452 | } |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 453 | } |
Tim Murray | bf3f369 | 2019-02-19 14:29:39 -0800 | [diff] [blame] | 454 | switch (pendingAction) { |
| 455 | case COMPACT_PROCESS_SOME: |
| 456 | action = mCompactActionSome; |
| 457 | break; |
| 458 | // For the time being, treat these as equivalent. |
| 459 | case COMPACT_PROCESS_FULL: |
| 460 | case COMPACT_PROCESS_PERSISTENT: |
| 461 | case COMPACT_PROCESS_BFGS: |
| 462 | action = mCompactActionFull; |
| 463 | break; |
| 464 | default: |
| 465 | action = COMPACT_ACTION_NONE; |
| 466 | break; |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 467 | } |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 468 | |
Tim Murray | bf3f369 | 2019-02-19 14:29:39 -0800 | [diff] [blame] | 469 | if (COMPACT_ACTION_NONE.equals(action)) { |
Tim Murray | f96451b | 2019-01-30 18:36:48 -0800 | [diff] [blame] | 470 | return; |
| 471 | } |
| 472 | |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 473 | try { |
| 474 | Trace.traceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "Compact " |
| 475 | + ((pendingAction == COMPACT_PROCESS_SOME) ? "some" : "full") |
| 476 | + ": " + name); |
Ben Murdoch | fdc5593 | 2019-01-30 10:43:15 +0000 | [diff] [blame] | 477 | long zramFreeKbBefore = Debug.getZramFreeKb(); |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 478 | long[] rssBefore = Process.getRss(pid); |
| 479 | FileOutputStream fos = new FileOutputStream("/proc/" + pid + "/reclaim"); |
| 480 | fos.write(action.getBytes()); |
| 481 | fos.close(); |
| 482 | long[] rssAfter = Process.getRss(pid); |
| 483 | long end = SystemClock.uptimeMillis(); |
| 484 | long time = end - start; |
Ben Murdoch | fdc5593 | 2019-01-30 10:43:15 +0000 | [diff] [blame] | 485 | long zramFreeKbAfter = Debug.getZramFreeKb(); |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 486 | EventLog.writeEvent(EventLogTags.AM_COMPACT, pid, name, action, |
| 487 | rssBefore[0], rssBefore[1], rssBefore[2], rssBefore[3], |
| 488 | rssAfter[0], rssAfter[1], rssAfter[2], rssAfter[3], time, |
Ben Murdoch | fdc5593 | 2019-01-30 10:43:15 +0000 | [diff] [blame] | 489 | lastCompactAction, lastCompactTime, msg.arg1, msg.arg2, |
| 490 | zramFreeKbBefore, zramFreeKbAfter); |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 491 | // Note that as above not taking mPhenoTypeFlagLock here to avoid locking |
| 492 | // on every single compaction for a flag that will seldom change and the |
| 493 | // impact of reading the wrong value here is low. |
| 494 | if (mRandom.nextFloat() < mStatsdSampleRate) { |
| 495 | StatsLog.write(StatsLog.APP_COMPACTED, pid, name, pendingAction, |
| 496 | rssBefore[0], rssBefore[1], rssBefore[2], rssBefore[3], |
| 497 | rssAfter[0], rssAfter[1], rssAfter[2], rssAfter[3], time, |
| 498 | lastCompactAction, lastCompactTime, msg.arg1, |
Ben Murdoch | fdc5593 | 2019-01-30 10:43:15 +0000 | [diff] [blame] | 499 | ActivityManager.processStateAmToProto(msg.arg2), |
| 500 | zramFreeKbBefore, zramFreeKbAfter); |
Ben Murdoch | 2384df7 | 2019-01-28 16:13:55 +0000 | [diff] [blame] | 501 | } |
Ben Murdoch | c26a5a8 | 2019-01-16 10:05:58 +0000 | [diff] [blame] | 502 | synchronized (mAm) { |
| 503 | proc.lastCompactTime = end; |
| 504 | proc.lastCompactAction = pendingAction; |
| 505 | } |
| 506 | Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER); |
| 507 | } catch (Exception e) { |
| 508 | // nothing to do, presumably the process died |
| 509 | Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER); |
| 510 | } |
Tim Murray | 31faf3f | 2019-03-01 20:25:07 -0800 | [diff] [blame] | 511 | break; |
| 512 | } |
| 513 | case COMPACT_SYSTEM_MSG: { |
| 514 | Trace.traceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "compactSystem"); |
| 515 | compactSystem(); |
| 516 | Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER); |
| 517 | break; |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 518 | } |
| 519 | } |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 520 | } |
| 521 | } |
Tim Murray | 1cdbd1e | 2018-12-18 15:18:33 -0800 | [diff] [blame] | 522 | } |