8 files changed, 10 insertions, 13 deletions
diff --git a/lib/stdlib/test/ets_SUITE.erl b/lib/stdlib/test/ets_SUITE.erl
index 9f552b5a6b..084cc36ae3 100644
--- a/lib/stdlib/test/ets_SUITE.erl
+++ b/lib/stdlib/test/ets_SUITE.erl
@@ -1385,7 +1385,7 @@ random_test() ->
 	       {ok,[X]} ->
 		   X;
 	       _ ->
-		   {A,B,C} = erlang:now(),
+		   {A,B,C} = erlang:timestamp(),
 		   random:seed(A,B,C),
 		   get(random_seed)
 	   end,
diff --git a/lib/stdlib/test/lists_SUITE.erl b/lib/stdlib/test/lists_SUITE.erl
index f4589a8e24..01c138d94c 100644
--- a/lib/stdlib/test/lists_SUITE.erl
+++ b/lib/stdlib/test/lists_SUITE.erl
@@ -1704,7 +1704,7 @@ fun_pid(Fun) ->
 get_seed() ->
     case random:seed() of
 	undefined ->
-	    now();
+	    erlang:timestamp();
 	Tuple ->
 	    Tuple
     end.
diff --git a/lib/stdlib/test/random_SUITE.erl b/lib/stdlib/test/random_SUITE.erl
index ac9d1a6c06..22c0900651 100644
--- a/lib/stdlib/test/random_SUITE.erl
+++ b/lib/stdlib/test/random_SUITE.erl
@@ -82,7 +82,7 @@ seed(suite) ->
     [];
 seed(Config) when is_list(Config) ->
     ?line Self = self(),
-    ?line Seed = {S1, S2, S3} = now(),
+    Seed = {S1, S2, S3} = erlang:timestamp(),
     ?line _ = spawn(fun() ->
     	random:seed(S1,S2,S3),
     	Rands = lists:foldl(fun
diff --git a/lib/stdlib/test/select_SUITE.erl b/lib/stdlib/test/select_SUITE.erl
index 546c25f954..201c38b25a 100644
--- a/lib/stdlib/test/select_SUITE.erl
+++ b/lib/stdlib/test/select_SUITE.erl
@@ -211,7 +211,7 @@ init_random(Config) ->
 	       {ok,[X]} ->
 		   X;
 	       _ ->
-		   {A,B,C} = erlang:now(),
+		   {A,B,C} = erlang:timestamp(),
 		   random:seed(A,B,C),
 		   get(random_seed)
 	   end,
diff --git a/lib/stdlib/test/string_SUITE.erl b/lib/stdlib/test/string_SUITE.erl
index a55c710d50..e9ea2e3522 100644
--- a/lib/stdlib/test/string_SUITE.erl
+++ b/lib/stdlib/test/string_SUITE.erl
@@ -120,7 +120,7 @@ chr_rchr(suite) ->
 chr_rchr(doc) ->
     [];
 chr_rchr(Config) when is_list(Config) ->
-    ?line {_,_,X} = now(),
+    {_,_,X} = erlang:timestamp(),
     ?line 0 = string:chr("", (X rem (255-32)) + 32),
     ?line 0 = string:rchr("", (X rem (255-32)) + 32),
     ?line 1 = string:chr("x", $x),
@@ -144,7 +144,7 @@ str_rstr(suite) ->
 str_rstr(doc) ->
     [];
 str_rstr(Config) when is_list(Config) ->
-    ?line {_,_,X} = now(),
+    {_,_,X} = erlang:timestamp(),
     ?line 0 = string:str("", [(X rem (255-32)) + 32]),
     ?line 0 = string:rstr("", [(X rem (255-32)) + 32]),
     ?line 1 = string:str("x", "x"),
diff --git a/lib/stdlib/test/tar_SUITE.erl b/lib/stdlib/test/tar_SUITE.erl
index 9b6d65011e..3b54cd0f34 100644
--- a/lib/stdlib/test/tar_SUITE.erl
+++ b/lib/stdlib/test/tar_SUITE.erl
@@ -89,7 +89,7 @@ borderline_test(Size, TempDir) ->
     ?line io:format("Testing size ~p", [Size]),
 
     %% Create a file and archive it.
-    ?line {_, _, X0} = erlang:now(),
+    X0 = erlang:monotonic_time(),
     ?line file:write_file(Name, random_byte_list(X0, Size)),
     ?line ok = erl_tar:create(Archive, [Name]),
     ?line ok = file:delete(Name),
diff --git a/lib/stdlib/test/timer_SUITE.erl b/lib/stdlib/test/timer_SUITE.erl
index c4dfeff8e5..6ece2e897f 100644
--- a/lib/stdlib/test/timer_SUITE.erl
+++ b/lib/stdlib/test/timer_SUITE.erl
@@ -79,10 +79,7 @@ report_result(Error) -> ?line test_server:fail(Error).
 big_test(N) ->
     C = start_collect(),
     system_time(), system_time(), system_time(),
-    A1 = element(2, erlang:now()),
-    A2 = A1 * 3,
-    A3 = element(3, erlang:now()),
-    random:seed(A1, A2, A3),
+    random:seed(erlang:timestamp()),
     random:uniform(100),random:uniform(100),random:uniform(100),
 
     big_loop(C, N, []),
diff --git a/lib/stdlib/test/zip_SUITE.erl b/lib/stdlib/test/zip_SUITE.erl
index d168a9d9bc..08243f7c4f 100644
--- a/lib/stdlib/test/zip_SUITE.erl
+++ b/lib/stdlib/test/zip_SUITE.erl
@@ -84,7 +84,7 @@ borderline_test(Size, TempDir) ->
     io:format("Testing size ~p", [Size]),
 
     %% Create a file and archive it.
-    {_, _, X0} = erlang:now(),
+    {_, _, X0} = erlang:timestamp(),
     file:write_file(Name, random_byte_list(X0, Size)),
     {ok, Archive} = zip:zip(Archive, [Name]),
     ok = file:delete(Name),
@@ -606,7 +606,7 @@ zip_to_binary(Config) when is_list(Config) ->
 aliases(doc) ->
     ["Test using the aliases, extract/2, table/2 and create/3"];
 aliases(Config) when is_list(Config) ->
-    {_, _, X0} = erlang:now(),
+    {_, _, X0} = erlang:timestamp(),
     Size = 100,
     B = list_to_binary(random_byte_list(X0, Size)),
     %% create