diff --git a/src/backend/port/sysv_shmem.c b/src/backend/port/sysv_shmem.c
index e7474ce..fdf343b 100644
--- a/src/backend/port/sysv_shmem.c
+++ b/src/backend/port/sysv_shmem.c
@@ -587,6 +587,7 @@ CreateAnonymousSegment(Size *size)
 	Size		allocsize = *size;
 	void	   *ptr = MAP_FAILED;
 	int			mmap_errno = 0;
+	bool		with_hugepages = false;
 
 #ifndef MAP_HUGETLB
 	/* PGSharedMemoryCreate should have dealt with this case */
@@ -611,6 +612,8 @@ CreateAnonymousSegment(Size *size)
 		if (huge_pages == HUGE_PAGES_TRY && ptr == MAP_FAILED)
 			elog(DEBUG1, "mmap(%zu) with MAP_HUGETLB failed, huge pages disabled: %m",
 				 allocsize);
+		else
+			with_hugepages = true;
 	}
 #endif
 
@@ -639,7 +642,8 @@ CreateAnonymousSegment(Size *size)
 						 "memory usage, perhaps by reducing shared_buffers or "
 						 "max_connections.",
 						 allocsize) : 0));
-	}
+	} else if (!with_hugepages && huge_pages == HUGE_PAGES_TRY)
+		ereport(LOG, (errmsg("Anonymous shared memory was allocated without huge pages.")));
 
 	*size = allocsize;
 	return ptr;
diff --git a/src/backend/port/win32_shmem.c b/src/backend/port/win32_shmem.c
index 64fde8d..04c242a 100644
--- a/src/backend/port/win32_shmem.c
+++ b/src/backend/port/win32_shmem.c
@@ -390,6 +390,9 @@ retry:
 	/* Register on-exit routine to delete the new segment */
 	on_shmem_exit(pgwin32_SharedMemoryDelete, PointerGetDatum(hmap2));
 
+	if (!(flProtect & SEC_LARGE_PAGES) && huge_pages == HUGE_PAGES_TRY)
+		ereport(LOG, (errmsg("Anonymous shared memory was allocated without huge pages.")));
+
 	*shim = hdr;
 	return hdr;
 }