diff --git a/src/python/jw/pkg/App.py b/src/python/jw/pkg/App.py
index 4579ebbf..b85bd021 100644
--- a/src/python/jw/pkg/App.py
+++ b/src/python/jw/pkg/App.py
@@ -4,6 +4,7 @@
 #
 
 import os, sys, argparse, pwd, re
+from functools import lru_cache
 
 from .lib.App import App as Base
 from .lib.log import *
@@ -139,7 +140,7 @@ class App(Base):
         self.__pretty_topdir = self.__format_topdir(self.__topdir, args.topdir_format)
         self.__topdir_fmt = args.topdir_format
         if self.__topdir is not None:
-            self.__top_name = self.__res_cache.run(self.read_value, [self.__topdir + '/make/project.conf', 'build', 'name'])
+            self.__top_name = self.read_value(self.__topdir + '/make/project.conf', 'build', 'name')
             if not self.__top_name:
                 self.__top_name = re.sub('-[0-9.-]*$', '', os.path.basename(os.path.realpath(self.__topdir)))
 
@@ -167,6 +168,7 @@ class App(Base):
         seen_add = seen.add
         return [x for x in seq if not (x in seen or seen_add(x))]
 
+    @lru_cache(maxsize=None)
     def get_os(self, args = ""):
         import subprocess
         for d in [ self.__projs_root + '/jw-pkg/scripts', '/opt/jw-pkg/bin' ]:
@@ -198,7 +200,7 @@ class App(Base):
         if self.__os_cascade is not None:
             return self.__os_cascade.copy()
         r = [ 'os', platform.system().lower() ]
-        os = self.__opt_os if self.__opt_os is not None else self.__res_cache.run(self.get_os, [])
+        os = self.__opt_os if self.__opt_os is not None else self.get_os()
         name = re.sub('-.*', '', os)
         series = os
         while True:
@@ -235,6 +237,7 @@ class App(Base):
         file.close()
         return r.rstrip()
 
+    @lru_cache(maxsize=None)
     def read_value(self, path, section, key):
 
         def scan_section(f, key):
@@ -311,7 +314,7 @@ class App(Base):
 
         path = proj_root + '/make/project.conf'
         #print('path = ', path, 'self.__top_name = ', self.__top_name, 'name = ', name)
-        return self.__res_cache.run(self.read_value, [path, section, key])
+        return self.read_value(path, section, key)
 
     def collect_values(self, names, section, key):
         r = ""