diff --git a/compiler-rt/lib/scudo/standalone/secondary.h b/compiler-rt/lib/scudo/standalone/secondary.h
--- a/compiler-rt/lib/scudo/standalone/secondary.h
+++ b/compiler-rt/lib/scudo/standalone/secondary.h
@@ -155,10 +155,16 @@
 
   void getStats(ScopedString *Str) {
     ScopedLock L(Mutex);
+    u32 Integral = SuccessfulRetrieves * 100 / CallsToRetrieve;
+    u32 Fractional = (((SuccessfulRetrieves * 100) % CallsToRetrieve) * 100
+                    + CallsToRetrieve / 2) / CallsToRetrieve;
     Str->append("Stats: MapAllocatorCache: EntriesCount: %d, "
                 "MaxEntriesCount: %u, MaxEntrySize: %zu\n",
                 EntriesCount, atomic_load_relaxed(&MaxEntriesCount),
                 atomic_load_relaxed(&MaxEntrySize));
+    Str->append("Stats: RetrievalStats: Wasted: %zuK, SuccessRate: %u/%u "
+                "(%u.%02u%%)\n", WastedBytes >> 10, SuccessfulRetrieves,
+                CallsToRetrieve, Integral, Fractional);
     for (CachedBlock Entry : Entries) {
       if (!Entry.isValid())
         continue;
@@ -272,6 +278,7 @@
     uptr HeaderPos = 0;
     {
       ScopedLock L(Mutex);
+      CallsToRetrieve++;
       if (EntriesCount == 0)
         return false;
       for (u32 I = 0; I < MaxCount; I++) {
@@ -292,12 +299,14 @@
         Entry = Entries[I];
         Entries[I].invalidate();
         EntriesCount--;
+        SuccessfulRetrieves++;
+        WastedBytes += HeaderPos - Entry.CommitBase;
         break;
       }
     }
     if (!Found)
       return false;
-
+    
     *H = reinterpret_cast<LargeBlock::Header *>(
         LargeBlock::addHeaderTag<Config>(HeaderPos));
     *Zeroed = Entry.Time == 0;
@@ -420,6 +429,7 @@
       releaseIfOlderThan(Entries[I], Time);
   }
 
+
   HybridMutex Mutex;
   u32 EntriesCount GUARDED_BY(Mutex) = 0;
   u32 QuarantinePos GUARDED_BY(Mutex) = 0;
@@ -428,6 +438,10 @@
   u64 OldestTime GUARDED_BY(Mutex) = 0;
   u32 IsFullEvents GUARDED_BY(Mutex) = 0;
   atomic_s32 ReleaseToOsIntervalMs = {};
+  u32 CallsToRetrieve GUARDED_BY(Mutex)= 0;
+  u32 SuccessfulRetrieves GUARDED_BY(Mutex) = 0;
+  uptr WastedBytes GUARDED_BY(Mutex) = 0;
+
 
   CachedBlock Entries[CacheConfig::EntriesArraySize] GUARDED_BY(Mutex) = {};
   NonZeroLengthArray<CachedBlock, CacheConfig::QuarantineSize>