diff options
| -rw-r--r-- | lib/os_mon/test/cpu_sup_SUITE.erl | 63 |
1 files changed, 39 insertions, 24 deletions
diff --git a/lib/os_mon/test/cpu_sup_SUITE.erl b/lib/os_mon/test/cpu_sup_SUITE.erl index ba28f31f26..3a8346ac44 100644 --- a/lib/os_mon/test/cpu_sup_SUITE.erl +++ b/lib/os_mon/test/cpu_sup_SUITE.erl @@ -162,39 +162,54 @@ util_values(Config) when is_list(Config) -> Ref = make_ref(), Loop = fun (L) -> L(L) end, Spinner = fun () -> - Looper = spawn_link(fun () -> Loop(Loop) end), + NrOfProcesses = 100, + Loopers = [spawn_link(fun () -> Loop(Loop) end) + || _ <- lists:seq(1,NrOfProcesses)], receive after ?SPIN_TIME -> ok end, - unlink(Looper), - exit(Looper, kill), - Tester ! Ref - end, + [(fun () -> + unlink(Looper), + exit(Looper, kill), + Tester ! Ref + end)() + || Looper <- Loopers] + end, cpu_sup:util(), - - spawn_link(Spinner), - receive Ref -> ok end, - HighUtil1 = cpu_sup:util(), - receive after ?SPIN_TIME -> ok end, - LowUtil1 = cpu_sup:util(), + LowUtil0 = cpu_sup:util(), + NrOfProcessors = erlang:system_info(logical_processors_available), + case LowUtil0 of + U when U > ((100.0 / NrOfProcessors) * 0.5) -> + %% We cannot run this test if the system is doing other + %% work at the same time as the result will be unreliable + {skip, io_lib:format("CPU utilization was too high (~f%)", [LowUtil0])}; + _ -> + cpu_sup:util(), + spawn_link(Spinner), + receive Ref -> ok end, + HighUtil1 = cpu_sup:util(), - spawn_link(Spinner), - receive Ref -> ok end, - HighUtil2 = cpu_sup:util(), + receive after ?SPIN_TIME -> ok end, + LowUtil1 = cpu_sup:util(), - receive after ?SPIN_TIME -> ok end, - LowUtil2 = cpu_sup:util(), + spawn_link(Spinner), + receive Ref -> ok end, + HighUtil2 = cpu_sup:util(), - Utils = [{high1,HighUtil1}, {low1,LowUtil1}, - {high2,HighUtil2}, {low2,LowUtil2}], - io:format("Utils: ~p~n", [Utils]), + receive after ?SPIN_TIME -> ok end, + LowUtil2 = cpu_sup:util(), - false = LowUtil1 > HighUtil1, - false = LowUtil1 > HighUtil2, - false = LowUtil2 > HighUtil1, - false = LowUtil2 > HighUtil2, + Utils = [{high1,HighUtil1}, {low1,LowUtil1}, + {high2,HighUtil2}, {low2,LowUtil2}], + io:format("Utils: ~p~n", [Utils]), - ok. + false = LowUtil1 > HighUtil1, + false = LowUtil1 > HighUtil2, + false = LowUtil2 > HighUtil1, + false = LowUtil2 > HighUtil2, + + ok + end. % Outdated |