diff --git a/cmds/statsd/src/atoms.proto b/cmds/statsd/src/atoms.proto
index 39d24ee..c2fed66 100644
--- a/cmds/statsd/src/atoms.proto
+++ b/cmds/statsd/src/atoms.proto
@@ -184,7 +184,6 @@
         DiskIo disk_io = 10032;
         PowerProfile power_profile = 10033;
         ProcStats proc_stats_pkg_proc = 10034;
-        ProcessCpuTime process_cpu_time = 10035;
         NativeProcessMemoryState native_process_memory_state = 10036;
     }
 
@@ -3036,22 +3035,6 @@
 }
 
 /**
- * Pulls process user time and system time. Puller takes a snapshot of all pids
- * in the system and returns cpu stats for those that are working at the time.
- * Dead pids will be dropped. Kernel processes are excluded.
- * Min cool-down is 5 sec.
- */
-message ProcessCpuTime {
-    optional int32 uid = 1 [(is_uid) = true];
-
-    optional string process_name = 2;
-    // Process cpu time in user space, cumulative from boot/process start
-    optional int64 user_time_millis = 3;
-    // Process cpu time in system space, cumulative from boot/process start
-    optional int64 system_time_millis = 4;
-}
-
-/**
  * Logs when a user restriction was added or removed.
  *
  * Logged from:
diff --git a/cmds/statsd/src/external/StatsPullerManager.cpp b/cmds/statsd/src/external/StatsPullerManager.cpp
index 8871d4d..1a9ba8a 100644
--- a/cmds/statsd/src/external/StatsPullerManager.cpp
+++ b/cmds/statsd/src/external/StatsPullerManager.cpp
@@ -229,9 +229,6 @@
         // PowerProfile constants for power model calculations.
         {android::util::POWER_PROFILE,
          {{}, {}, 1 * NS_PER_SEC, new StatsCompanionServicePuller(android::util::POWER_PROFILE)}},
-        // Process cpu stats. Min cool-down is 5 sec, inline with what AcitivityManagerService uses.
-        {android::util::PROCESS_CPU_TIME,
-         {{}, {}, 5 * NS_PER_SEC, new StatsCompanionServicePuller(android::util::PROCESS_CPU_TIME)}},
 };
 
 StatsPullerManager::StatsPullerManager() : mNextPullTimeNs(NO_ALARM_UPDATE) {
diff --git a/services/core/java/com/android/server/stats/StatsCompanionService.java b/services/core/java/com/android/server/stats/StatsCompanionService.java
index 6db7e4f..93870e7 100644
--- a/services/core/java/com/android/server/stats/StatsCompanionService.java
+++ b/services/core/java/com/android/server/stats/StatsCompanionService.java
@@ -88,7 +88,6 @@
 import com.android.internal.os.KernelWakelockStats;
 import com.android.internal.os.LooperStats;
 import com.android.internal.os.PowerProfile;
-import com.android.internal.os.ProcessCpuTracker;
 import com.android.internal.os.StoragedUidIoStatsReader;
 import com.android.internal.util.DumpUtils;
 import com.android.server.BinderCallsStatsService;
@@ -175,6 +174,11 @@
     private final KernelWakelockStats mTmpWakelockStats = new KernelWakelockStats();
     private IWifiManager mWifiManager = null;
     private TelephonyManager mTelephony = null;
+    private final StatFs mStatFsData = new StatFs(Environment.getDataDirectory().getAbsolutePath());
+    private final StatFs mStatFsSystem =
+            new StatFs(Environment.getRootDirectory().getAbsolutePath());
+    private final StatFs mStatFsTemp =
+            new StatFs(Environment.getDownloadCacheDirectory().getAbsolutePath());
     @GuardedBy("sStatsdLock")
     private final HashSet<Long> mDeathTimeMillis = new HashSet<>();
     @GuardedBy("sStatsdLock")
@@ -195,8 +199,6 @@
     private static IThermalService sThermalService;
     private File mBaseDir =
             new File(SystemServiceManager.ensureSystemDir(), "stats_companion");
-    @GuardedBy("this")
-    ProcessCpuTracker mProcessCpuTracker = null;
 
     public StatsCompanionService(Context context) {
         super();
@@ -770,7 +772,7 @@
     private void pullBluetoothBytesTransfer(
             int tagId, long elapsedNanos, long wallClockNanos,
             List<StatsLogEventWrapper> pulledData) {
-        BluetoothActivityEnergyInfo info = fetchBluetoothData();
+        BluetoothActivityEnergyInfo info = pullBluetoothData();
         if (info.getUidTraffic() != null) {
             for (UidTraffic traffic : info.getUidTraffic()) {
                 StatsLogEventWrapper e = new StatsLogEventWrapper(tagId, elapsedNanos,
@@ -882,12 +884,9 @@
             int tagId, long elapsedNanos, long wallClockNanos,
             List<StatsLogEventWrapper> pulledData) {
         long token = Binder.clearCallingIdentity();
-        synchronized (this) {
-            if (mWifiManager == null) {
-                mWifiManager =
-                        IWifiManager.Stub.asInterface(
-                                ServiceManager.getService(Context.WIFI_SERVICE));
-            }
+        if (mWifiManager == null) {
+            mWifiManager =
+                    IWifiManager.Stub.asInterface(ServiceManager.getService(Context.WIFI_SERVICE));
         }
         if (mWifiManager != null) {
             try {
@@ -917,10 +916,8 @@
             int tagId, long elapsedNanos, long wallClockNanos,
             List<StatsLogEventWrapper> pulledData) {
         long token = Binder.clearCallingIdentity();
-        synchronized (this) {
-            if (mTelephony == null) {
-                mTelephony = TelephonyManager.from(mContext);
-            }
+        if (mTelephony == null) {
+            mTelephony = TelephonyManager.from(mContext);
         }
         if (mTelephony != null) {
             SynchronousResultReceiver modemReceiver = new SynchronousResultReceiver("telephony");
@@ -944,7 +941,7 @@
     private void pullBluetoothActivityInfo(
             int tagId, long elapsedNanos, long wallClockNanos,
             List<StatsLogEventWrapper> pulledData) {
-        BluetoothActivityEnergyInfo info = fetchBluetoothData();
+        BluetoothActivityEnergyInfo info = pullBluetoothData();
         StatsLogEventWrapper e = new StatsLogEventWrapper(tagId, elapsedNanos, wallClockNanos);
         e.writeLong(info.getTimeStamp());
         e.writeInt(info.getBluetoothStackState());
@@ -955,7 +952,7 @@
         pulledData.add(e);
     }
 
-    private synchronized BluetoothActivityEnergyInfo fetchBluetoothData() {
+    private synchronized BluetoothActivityEnergyInfo pullBluetoothData() {
         final BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
         if (adapter != null) {
             SynchronousResultReceiver bluetoothReceiver = new SynchronousResultReceiver(
@@ -1326,35 +1323,30 @@
 
     private void pullProcessStats(int section, int tagId, long elapsedNanos, long wallClockNanos,
             List<StatsLogEventWrapper> pulledData) {
-        synchronized (this) {
-            try {
-                long lastHighWaterMark = readProcStatsHighWaterMark(section);
-                List<ParcelFileDescriptor> statsFiles = new ArrayList<>();
-                long highWaterMark = mProcessStats.getCommittedStats(
-                        lastHighWaterMark, section, true, statsFiles);
-                if (statsFiles.size() != 1) {
-                    return;
-                }
-                InputStream stream = new ParcelFileDescriptor.AutoCloseInputStream(
-                        statsFiles.get(0));
-                int[] len = new int[1];
-                byte[] stats = readFully(stream, len);
-                StatsLogEventWrapper e = new StatsLogEventWrapper(tagId, elapsedNanos,
-                        wallClockNanos);
-                e.writeStorage(Arrays.copyOf(stats, len[0]));
-                pulledData.add(e);
-                new File(mBaseDir.getAbsolutePath() + "/" + section + "_"
-                        + lastHighWaterMark).delete();
-                new File(
-                        mBaseDir.getAbsolutePath() + "/" + section + "_"
-                                + highWaterMark).createNewFile();
-            } catch (IOException e) {
-                Log.e(TAG, "Getting procstats failed: ", e);
-            } catch (RemoteException e) {
-                Log.e(TAG, "Getting procstats failed: ", e);
-            } catch (SecurityException e) {
-                Log.e(TAG, "Getting procstats failed: ", e);
+        try {
+            long lastHighWaterMark = readProcStatsHighWaterMark(section);
+            List<ParcelFileDescriptor> statsFiles = new ArrayList<>();
+            long highWaterMark = mProcessStats.getCommittedStats(
+                    lastHighWaterMark, section, true, statsFiles);
+            if (statsFiles.size() != 1) {
+                return;
             }
+            InputStream stream = new ParcelFileDescriptor.AutoCloseInputStream(statsFiles.get(0));
+            int[] len = new int[1];
+            byte[] stats = readFully(stream, len);
+            StatsLogEventWrapper e = new StatsLogEventWrapper(tagId, elapsedNanos, wallClockNanos);
+            e.writeStorage(Arrays.copyOf(stats, len[0]));
+            pulledData.add(e);
+            new File(mBaseDir.getAbsolutePath() + "/" + section + "_" + lastHighWaterMark).delete();
+            new File(
+                    mBaseDir.getAbsolutePath() + "/" + section + "_"
+                            + highWaterMark).createNewFile();
+        } catch (IOException e) {
+            Log.e(TAG, "Getting procstats failed: ", e);
+        } catch (RemoteException e) {
+            Log.e(TAG, "Getting procstats failed: ", e);
+        } catch (SecurityException e) {
+            Log.e(TAG, "Getting procstats failed: ", e);
         }
     }
 
@@ -1423,34 +1415,12 @@
         });
     }
 
-    private void pullProcessCpuTime(int tagId, long elapsedNanos, final long wallClockNanos,
-            List<StatsLogEventWrapper> pulledData) {
-        synchronized (this) {
-            if (mProcessCpuTracker == null) {
-                mProcessCpuTracker = new ProcessCpuTracker(false);
-                mProcessCpuTracker.init();
-            }
-            mProcessCpuTracker.update();
-            for (int i = 0; i < mProcessCpuTracker.countStats(); i++) {
-                ProcessCpuTracker.Stats st = mProcessCpuTracker.getStats(i);
-                StatsLogEventWrapper e = new StatsLogEventWrapper(tagId, elapsedNanos,
-                        wallClockNanos);
-                e.writeInt(st.uid);
-                e.writeString(st.name);
-                e.writeLong(st.base_utime);
-                e.writeLong(st.base_stime);
-                pulledData.add(e);
-            }
-        }
-    }
-
     /**
      * Pulls various data.
      */
     @Override // Binder call
     public StatsLogEventWrapper[] pullData(int tagId) {
         enforceCallingPermission();
-
         if (DEBUG) {
             Slog.d(TAG, "Pulling " + tagId);
         }
@@ -1563,8 +1533,7 @@
                 break;
             }
             case StatsLog.PROC_STATS: {
-                pullProcessStats(ProcessStats.REPORT_ALL, tagId, elapsedNanos, wallClockNanos,
-                        ret);
+                pullProcessStats(ProcessStats.REPORT_ALL, tagId, elapsedNanos, wallClockNanos, ret);
                 break;
             }
             case StatsLog.PROC_STATS_PKG_PROC: {
@@ -1580,10 +1549,6 @@
                 pullPowerProfile(tagId, elapsedNanos, wallClockNanos, ret);
                 break;
             }
-            case StatsLog.PROCESS_CPU_TIME: {
-                pullProcessCpuTime(tagId, elapsedNanos, wallClockNanos, ret);
-                break;
-            }
             default:
                 Slog.w(TAG, "No such tagId data as " + tagId);
                 return null;