lets see what appveyor reports as the used memory

tests/fragmentation/tfragment_gc.nim

@@ -21,4 +21,7 @@ let total = getTotalMem()
 # Concrete values on Win64: 58.152MiB / 188.285MiB
 
 echo "occupied ok: ", occ < 60 * 1024 * 1024
-echo "total ok: ", total < 200 * 1024 * 1024
+let totalOk = total < 210 * 1024 * 1024
+echo "total ok: ", totalOk
+if not totalOk:
+  echo "total peak memory ", formatSize(total)