diff --git a/cmds/statsd/src/atoms.proto b/cmds/statsd/src/atoms.proto
index 69372cd..3246d19 100644
--- a/cmds/statsd/src/atoms.proto
+++ b/cmds/statsd/src/atoms.proto
@@ -253,7 +253,7 @@
     }
 
     // Pulled events will start at field 10000.
-    // Next: 10056
+    // Next: 10057
     oneof pulled {
         WifiBytesTransfer wifi_bytes_transfer = 10000;
         WifiBytesTransferByFgBg wifi_bytes_transfer_by_fg_bg = 10001;
@@ -311,6 +311,7 @@
         SDCardInfo sdcard_info = 10053;
         GpuStatsGlobalInfo gpu_stats_global_info = 10054;
         GpuStatsAppInfo gpu_stats_app_info = 10055;
+        SystemIonHeapSize system_ion_heap_size = 10056;
     }
 
     // DO NOT USE field numbers above 100,000 in AOSP.
@@ -5822,3 +5823,13 @@
     optional GpuDriverLoadingTime vk_driver_loading_time = 4
             [(android.os.statsd.log_mode) = MODE_BYTES];
 }
+
+/*
+ * Logs the size of the system ion heap.
+ *
+ * Pulled from StatsCompanionService.
+ */
+message SystemIonHeapSize {
+    // Size of the system ion heap in bytes.
+    optional int64 size_in_bytes = 1;
+}
diff --git a/cmds/statsd/src/external/StatsPullerManager.cpp b/cmds/statsd/src/external/StatsPullerManager.cpp
index 4f87272..c7ae656 100644
--- a/cmds/statsd/src/external/StatsPullerManager.cpp
+++ b/cmds/statsd/src/external/StatsPullerManager.cpp
@@ -148,10 +148,14 @@
         {android::util::NATIVE_PROCESS_MEMORY_STATE,
          {.additiveFields = {3, 4, 5, 6},
           .puller = new StatsCompanionServicePuller(android::util::NATIVE_PROCESS_MEMORY_STATE)}},
+        // process_memory_high_water_mark
         {android::util::PROCESS_MEMORY_HIGH_WATER_MARK,
          {.additiveFields = {3},
           .puller =
                   new StatsCompanionServicePuller(android::util::PROCESS_MEMORY_HIGH_WATER_MARK)}},
+        // system_ion_heap_size
+        {android::util::SYSTEM_ION_HEAP_SIZE,
+         {.puller = new StatsCompanionServicePuller(android::util::SYSTEM_ION_HEAP_SIZE)}},
         // temperature
         {android::util::TEMPERATURE,
          {.puller = new StatsCompanionServicePuller(android::util::TEMPERATURE)}},
diff --git a/services/core/java/com/android/server/am/MemoryStatUtil.java b/services/core/java/com/android/server/am/MemoryStatUtil.java
index a584914..0d03580 100644
--- a/services/core/java/com/android/server/am/MemoryStatUtil.java
+++ b/services/core/java/com/android/server/am/MemoryStatUtil.java
@@ -57,15 +57,18 @@
     private static final String PROC_STATUS_FILE_FMT = "/proc/%d/status";
     /** Path to procfs cmdline file. Used with pid: /proc/pid/cmdline. */
     private static final String PROC_CMDLINE_FILE_FMT = "/proc/%d/cmdline";
+    /** Path to debugfs file for the system ion heap. */
+    private static final String DEBUG_SYSTEM_ION_HEAP_FILE = "/sys/kernel/debug/ion/heaps/system";
 
     private static final Pattern PGFAULT = Pattern.compile("total_pgfault (\\d+)");
     private static final Pattern PGMAJFAULT = Pattern.compile("total_pgmajfault (\\d+)");
     private static final Pattern RSS_IN_BYTES = Pattern.compile("total_rss (\\d+)");
     private static final Pattern CACHE_IN_BYTES = Pattern.compile("total_cache (\\d+)");
     private static final Pattern SWAP_IN_BYTES = Pattern.compile("total_swap (\\d+)");
-
     private static final Pattern RSS_HIGH_WATERMARK_IN_BYTES =
             Pattern.compile("VmHWM:\\s*(\\d+)\\s*kB");
+    private static final Pattern ION_HEAP_SIZE_IN_BYTES =
+            Pattern.compile("\n\\s*total\\s*(\\d+)\\s*\n");
 
     private static final int PGFAULT_INDEX = 9;
     private static final int PGMAJFAULT_INDEX = 11;
@@ -127,6 +130,16 @@
         return parseCmdlineFromProcfs(readFileContents(path));
     }
 
+    /**
+     * Reads size of the system ion heap from debugfs.
+     *
+     * Returns value of the total size in bytes of the system ion heap from
+     * /sys/kernel/debug/ion/heaps/system.
+     */
+    public static long readSystemIonHeapSizeFromDebugfs() {
+        return parseIonHeapSizeFromDebugfs(readFileContents(DEBUG_SYSTEM_ION_HEAP_FILE));
+    }
+
     private static String readFileContents(String path) {
         final File file = new File(path);
         if (!file.exists()) {
@@ -228,6 +241,19 @@
     }
 
     /**
+     * Parses the ion heap size from the contents of a file under /sys/kernel/debug/ion/heaps in
+     * debugfs. The returned value is in bytes.
+     */
+    @VisibleForTesting
+    static long parseIonHeapSizeFromDebugfs(String contents) {
+        if (contents == null || contents.isEmpty()) {
+            return 0;
+        }
+        Matcher m = ION_HEAP_SIZE_IN_BYTES.matcher(contents);
+        return m.find() ? Long.parseLong(m.group(1)) : 0;
+    }
+
+    /**
      * Returns whether per-app memcg is available on device.
      */
     static boolean hasMemcg() {
diff --git a/services/core/java/com/android/server/stats/StatsCompanionService.java b/services/core/java/com/android/server/stats/StatsCompanionService.java
index 4815e5c..2b17d19 100644
--- a/services/core/java/com/android/server/stats/StatsCompanionService.java
+++ b/services/core/java/com/android/server/stats/StatsCompanionService.java
@@ -24,6 +24,7 @@
 import static com.android.server.am.MemoryStatUtil.readCmdlineFromProcfs;
 import static com.android.server.am.MemoryStatUtil.readMemoryStatFromProcfs;
 import static com.android.server.am.MemoryStatUtil.readRssHighWaterMarkFromProcfs;
+import static com.android.server.am.MemoryStatUtil.readSystemIonHeapSizeFromDebugfs;
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
@@ -1182,6 +1183,15 @@
         SystemProperties.set("sys.rss_hwm_reset.on", "1");
     }
 
+    private void pullSystemIonHeapSize(
+            int tagId, long elapsedNanos, long wallClockNanos,
+            List<StatsLogEventWrapper> pulledData) {
+        final long systemIonHeapSizeInBytes = readSystemIonHeapSizeFromDebugfs();
+        StatsLogEventWrapper e = new StatsLogEventWrapper(tagId, elapsedNanos, wallClockNanos);
+        e.writeLong(systemIonHeapSizeInBytes);
+        pulledData.add(e);
+    }
+
     private void pullBinderCallsStats(
             int tagId, long elapsedNanos, long wallClockNanos,
             List<StatsLogEventWrapper> pulledData) {
@@ -2068,6 +2078,10 @@
                 pullProcessMemoryHighWaterMark(tagId, elapsedNanos, wallClockNanos, ret);
                 break;
             }
+            case StatsLog.SYSTEM_ION_HEAP_SIZE: {
+                pullSystemIonHeapSize(tagId, elapsedNanos, wallClockNanos, ret);
+                break;
+            }
             case StatsLog.BINDER_CALLS: {
                 pullBinderCallsStats(tagId, elapsedNanos, wallClockNanos, ret);
                 break;
diff --git a/services/tests/servicestests/src/com/android/server/am/MemoryStatUtilTest.java b/services/tests/servicestests/src/com/android/server/am/MemoryStatUtilTest.java
index 93cac08..71b4397 100644
--- a/services/tests/servicestests/src/com/android/server/am/MemoryStatUtilTest.java
+++ b/services/tests/servicestests/src/com/android/server/am/MemoryStatUtilTest.java
@@ -21,6 +21,7 @@
 import static com.android.server.am.MemoryStatUtil.MemoryStat;
 import static com.android.server.am.MemoryStatUtil.PAGE_SIZE;
 import static com.android.server.am.MemoryStatUtil.parseCmdlineFromProcfs;
+import static com.android.server.am.MemoryStatUtil.parseIonHeapSizeFromDebugfs;
 import static com.android.server.am.MemoryStatUtil.parseMemoryStatFromMemcg;
 import static com.android.server.am.MemoryStatUtil.parseMemoryStatFromProcfs;
 import static com.android.server.am.MemoryStatUtil.parseVmHWMFromProcfs;
@@ -178,6 +179,33 @@
             + "voluntary_ctxt_switches:\t903\n"
             + "nonvoluntary_ctxt_switches:\t104\n";
 
+    private static final String DEBUG_SYSTEM_ION_HEAP_CONTENTS = String.join(
+            "          client              pid             size\n",
+            "----------------------------------------------------\n",
+            " audio@2.0-servi              765             4096\n",
+            " audio@2.0-servi              765            61440\n",
+            " audio@2.0-servi              765             4096\n",
+            "     voip_client               96             8192\n",
+            "     voip_client               96             4096\n",
+            "   system_server             1232         16728064\n",
+            "  surfaceflinger              611         50642944\n",
+            "----------------------------------------------------\n",
+            "orphaned allocations (info is from last known client):\n",
+            "----------------------------------------------------\n",
+            "  total orphaned                0\n",
+            "          total          55193600\n",
+            "   deferred free                0\n",
+            "----------------------------------------------------\n",
+            "0 order 4 highmem pages in uncached pool = 0 total\n",
+            "0 order 4 lowmem pages in uncached pool = 0 total\n",
+            "1251 order 4 lowmem pages in cached pool = 81985536 total\n",
+            "VMID 8: 0 order 4 highmem pages in secure pool = 0 total\n",
+            "VMID  8: 0 order 4 lowmem pages in secure pool = 0 total\n",
+            "--------------------------------------------\n",
+            "uncached pool = 4096 cached pool = 83566592 secure pool = 0\n",
+            "pool total (uncached + cached + secure) = 83570688\n",
+            "--------------------------------------------\n");
+
     @Test
     public void testParseMemoryStatFromMemcg_parsesCorrectValues() {
         MemoryStat stat = parseMemoryStatFromMemcg(MEMORY_STAT_CONTENTS);
@@ -271,4 +299,21 @@
         output.write(bytes, 0, bytes.length);
         return output.toString();
     }
+
+    @Test
+    public void testParseIonHeapSizeFromDebugfs_emptyContents() {
+        assertEquals(0, parseIonHeapSizeFromDebugfs(""));
+
+        assertEquals(0, parseIonHeapSizeFromDebugfs(null));
+    }
+
+    @Test
+    public void testParseIonHeapSizeFromDebugfs_invalidValue() {
+        assertEquals(0, parseIonHeapSizeFromDebugfs("<<no-value>>"));
+    }
+
+    @Test
+    public void testParseIonHeapSizeFromDebugfs_correctValue() {
+        assertEquals(55193600, parseIonHeapSizeFromDebugfs(DEBUG_SYSTEM_ION_HEAP_CONTENTS));
+    }
 }