diff --git a/services/audioflinger/FastMixer.cpp b/services/audioflinger/FastMixer.cpp
index b0780a4..93f7ce5 100644
--- a/services/audioflinger/FastMixer.cpp
+++ b/services/audioflinger/FastMixer.cpp
@@ -412,6 +412,7 @@
             }
             ftDump->mUnderruns = underruns;
             ftDump->mFramesReady = framesReady;
+            ftDump->mFramesWritten = trackFramesWritten;
         }
 
         if (anyEnabledTracks) {
diff --git a/services/audioflinger/FastMixerDumpState.cpp b/services/audioflinger/FastMixerDumpState.cpp
index 2326e2a..6475f22 100644
--- a/services/audioflinger/FastMixerDumpState.cpp
+++ b/services/audioflinger/FastMixerDumpState.cpp
@@ -168,7 +168,7 @@
     uint32_t trackMask = mTrackMask;
     dprintf(fd, "  Fast tracks: sMaxFastTracks=%u activeMask=%#x\n",
             FastMixerState::sMaxFastTracks, trackMask);
-    dprintf(fd, "  Index Active Full Partial Empty  Recent Ready\n");
+    dprintf(fd, "  Index Active Full Partial Empty  Recent Ready    Written\n");
     for (uint32_t i = 0; i < FastMixerState::sMaxFastTracks; ++i, trackMask >>= 1) {
         bool isActive = trackMask & 1;
         const FastTrackDump *ftDump = &mTracks[i];
@@ -188,11 +188,13 @@
             mostRecent = "?";
             break;
         }
-        dprintf(fd, "  %5u %6s %4u %7u %5u %7s %5zu\n", i, isActive ? "yes" : "no",
+        dprintf(fd, "  %5u %6s %4u %7u %5u %7s %5zu %10lld\n",
+                i, isActive ? "yes" : "no",
                 (underruns.mBitFields.mFull) & UNDERRUN_MASK,
                 (underruns.mBitFields.mPartial) & UNDERRUN_MASK,
                 (underruns.mBitFields.mEmpty) & UNDERRUN_MASK,
-                mostRecent, ftDump->mFramesReady);
+                mostRecent, ftDump->mFramesReady,
+                (long long)ftDump->mFramesWritten);
     }
 }
 
diff --git a/services/audioflinger/FastMixerDumpState.h b/services/audioflinger/FastMixerDumpState.h
index ac15e7c..301c5b1 100644
--- a/services/audioflinger/FastMixerDumpState.h
+++ b/services/audioflinger/FastMixerDumpState.h
@@ -57,6 +57,7 @@
     /*virtual*/ ~FastTrackDump() { }
     FastTrackUnderruns  mUnderruns;
     size_t              mFramesReady;        // most recent value only; no long-term statistics kept
+    int64_t             mFramesWritten;      // last value from track
 };
 
 struct FastMixerDumpState : FastThreadDumpState {
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index a91fc26..5514d30 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -1826,6 +1826,15 @@
     audio_output_flags_t flags = output != NULL ? output->flags : AUDIO_OUTPUT_FLAG_NONE;
     String8 flagsAsString = outputFlagsToString(flags);
     dprintf(fd, "  AudioStreamOut: %p flags %#x (%s)\n", output, flags, flagsAsString.string());
+    dprintf(fd, "  Frames written: %lld\n", (long long)mFramesWritten);
+    dprintf(fd, "  Suspended frames: %lld\n", (long long)mSuspendedFrames);
+    if (mPipeSink.get() != nullptr) {
+        dprintf(fd, "  PipeSink frames written: %lld\n", (long long)mPipeSink->framesWritten());
+    }
+    if (output != nullptr) {
+        dprintf(fd, "  Hal stream dump:\n");
+        (void)output->stream->common.dump(&output->stream->common, fd);
+    }
 }
 
 // Thread virtuals