diff options
Diffstat (limited to 'lib/stdlib/test/string_SUITE.erl')
| -rw-r--r-- | lib/stdlib/test/string_SUITE.erl | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/lib/stdlib/test/string_SUITE.erl b/lib/stdlib/test/string_SUITE.erl index f43bfb4482..d02a6eac0a 100644 --- a/lib/stdlib/test/string_SUITE.erl +++ b/lib/stdlib/test/string_SUITE.erl @@ -47,7 +47,8 @@ -export([to_upper_to_lower/1]). %% Run tests when debugging them --export([debug/0]). +-export([debug/0, time_func/4]). +-compile([nowarn_deprecated_function]). suite() -> [{ct_hooks,[ts_install_cth]}, @@ -748,12 +749,12 @@ do_measure(DataDir) -> {ok, Bin} = file:read_file(File), io:format("~p~n",[byte_size(Bin)]), Do = fun(Name, Func, Mode) -> - {N, Mean, Stddev, _} = time_func(Func, Mode, Bin), + {N, Mean, Stddev, _} = time_func(Func, Mode, Bin, 20), io:format("~15w ~6w ~6.2fms ±~5.2fms #~.2w gc included~n", [Name, Mode, Mean/1000, Stddev/1000, N]) end, Do2 = fun(Name, Func, Mode) -> - {N, Mean, Stddev, _} = time_func(Func, binary, <<>>), + {N, Mean, Stddev, _} = time_func(Func, binary, <<>>, 20), io:format("~15w ~6w ~6.2fms ±~5.2fms #~.2w gc included~n", [Name, Mode, Mean/1000, Stddev/1000, N]) end, @@ -1029,19 +1030,19 @@ needs_check(_) -> true. %%%% Timer stuff -time_func(Fun, Mode, Bin) -> +time_func(Fun, Mode, Bin, Repeat) -> timer:sleep(100), %% Let emulator catch up and clean things before test runs Self = self(), Pid = spawn_link(fun() -> Str = mode(Mode, Bin), - Self ! {self(),time_func(0,0,0, Fun, Str, undefined)} + Self ! {self(),time_func(0,0,0, Fun, Str, undefined, Repeat)} end), receive {Pid,Msg} -> Msg end. -time_func(N,Sum,SumSq, Fun, Str, _) when N < 20 -> +time_func(N,Sum,SumSq, Fun, Str, _, Repeat) when N < Repeat -> {Time, Res} = timer:tc(fun() -> Fun(Str) end), - time_func(N+1,Sum+Time,SumSq+Time*Time, Fun, Str, Res); -time_func(N,Sum,SumSq, _, _, Res) -> + time_func(N+1,Sum+Time,SumSq+Time*Time, Fun, Str, Res, Repeat); +time_func(N,Sum,SumSq, _, _, Res, _) -> Mean = round(Sum / N), Stdev = round(math:sqrt((SumSq - (Sum*Sum/N))/(N - 1))), {N, Mean, Stdev, Res}. |