diff --git a/services/core/java/com/android/server/DropBoxManagerService.java b/services/core/java/com/android/server/DropBoxManagerService.java
index a2a232d6f3ec4..1d457aa933d77 100644
--- a/services/core/java/com/android/server/DropBoxManagerService.java
+++ b/services/core/java/com/android/server/DropBoxManagerService.java
@@ -60,6 +60,7 @@ import com.android.internal.annotations.GuardedBy;
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.os.IDropBoxManagerService;
 import com.android.internal.util.DumpUtils;
+import com.android.internal.util.FrameworkStatsLog;
 import com.android.internal.util.ObjectUtils;
 import com.android.server.DropBoxManagerInternal.EntrySource;
 
@@ -501,12 +502,20 @@ public final class DropBoxManagerService extends SystemService {
             }
         } catch (IOException e) {
             Slog.e(TAG, "Can't write: " + tag, e);
+            logDropboxDropped(
+                    FrameworkStatsLog.DROPBOX_ENTRY_DROPPED__DROP_REASON__WRITE_FAILURE,
+                    tag,
+                    0);
         } finally {
             IoUtils.closeQuietly(entry);
             if (temp != null) temp.delete();
         }
     }
 
+    private void logDropboxDropped(int reason, String tag, long entryAge) {
+        FrameworkStatsLog.write(FrameworkStatsLog.DROPBOX_ENTRY_DROPPED, reason, tag, entryAge);
+    }
+
     public boolean isTagEnabled(String tag) {
         final long token = Binder.clearCallingIdentity();
         try {
@@ -1119,13 +1128,19 @@ public final class DropBoxManagerService extends SystemService {
                 Settings.Global.DROPBOX_MAX_FILES,
                 (ActivityManager.isLowRamDeviceStatic()
                         ?  DEFAULT_MAX_FILES_LOWRAM : DEFAULT_MAX_FILES));
-        long cutoffMillis = System.currentTimeMillis() - ageSeconds * 1000;
+        long curTimeMillis = System.currentTimeMillis();
+        long cutoffMillis = curTimeMillis - ageSeconds * 1000;
         while (!mAllFiles.contents.isEmpty()) {
             EntryFile entry = mAllFiles.contents.first();
             if (entry.timestampMillis > cutoffMillis && mAllFiles.contents.size() < mMaxFiles) {
                 break;
             }
 
+            logDropboxDropped(
+                    FrameworkStatsLog.DROPBOX_ENTRY_DROPPED__DROP_REASON__AGED,
+                    entry.tag,
+                    curTimeMillis - entry.timestampMillis);
+
             FileList tag = mFilesByTag.get(entry.tag);
             if (tag != null && tag.contents.remove(entry)) tag.blocks -= entry.blocks;
             if (mAllFiles.contents.remove(entry)) mAllFiles.blocks -= entry.blocks;
@@ -1194,6 +1209,11 @@ public final class DropBoxManagerService extends SystemService {
                 if (mAllFiles.blocks < mCachedQuotaBlocks) break;
                 while (tag.blocks > tagQuota && !tag.contents.isEmpty()) {
                     EntryFile entry = tag.contents.first();
+                    logDropboxDropped(
+                            FrameworkStatsLog.DROPBOX_ENTRY_DROPPED__DROP_REASON__CLEARING_DATA,
+                            entry.tag,
+                            curTimeMillis - entry.timestampMillis);
+
                     if (tag.contents.remove(entry)) tag.blocks -= entry.blocks;
                     if (mAllFiles.contents.remove(entry)) mAllFiles.blocks -= entry.blocks;