diff --git a/tcmalloc/internal/system_allocator.h b/tcmalloc/internal/system_allocator.h
index a25e1f1b4..90f9bf328 100644
--- a/tcmalloc/internal/system_allocator.h
+++ b/tcmalloc/internal/system_allocator.h
@@ -377,6 +377,15 @@ SystemAllocator<Topology, NormalPartitions>::MmapRegion::Alloc(
     // This is only advisory, so ignore the error.
     ErrnoRestorer errno_restorer;
     (void)madvise(result_ptr, actual_size, MADV_NOHUGEPAGE);
+  } else {
+    // Opt-in to transparent hugepages for large allocations when system is 
+    // configured for transparent_hugepage=madvise. This can improve memory
+    // performance by reducing TLB pressure.
+    if (actual_size >= kHugePageSize) {
+      // This is only advisory, so ignore the error.
+      ErrnoRestorer errno_restorer;
+      (void)madvise(result_ptr, actual_size, MADV_HUGEPAGE);
+    }
   }
   free_size_ -= actual_size;
   return {result_ptr, actual_size};