diff options
Diffstat (limited to 'erts/emulator/test/scheduler_SUITE.erl')
| -rw-r--r-- | erts/emulator/test/scheduler_SUITE.erl | 205 |
1 files changed, 176 insertions, 29 deletions
diff --git a/erts/emulator/test/scheduler_SUITE.erl b/erts/emulator/test/scheduler_SUITE.erl index 8931562828..986a73ebb1 100644 --- a/erts/emulator/test/scheduler_SUITE.erl +++ b/erts/emulator/test/scheduler_SUITE.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 2008-2011. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. %% %% %CopyrightEnd% %% @@ -52,7 +53,9 @@ update_cpu_info/1, sct_cmd/1, sbt_cmd/1, + scheduler_threads/1, scheduler_suspend/1, + dirty_scheduler_threads/1, reader_groups/1]). -define(DEFAULT_TIMEOUT, ?t:minutes(15)). @@ -66,7 +69,8 @@ all() -> equal_with_part_time_max, equal_and_high_with_part_time_max, equal_with_high, equal_with_high_max, bound_process, - {group, scheduler_bind}, scheduler_suspend, + {group, scheduler_bind}, scheduler_threads, scheduler_suspend, + dirty_scheduler_threads, reader_groups]. groups() -> @@ -1039,7 +1043,129 @@ sbt_test(Config, CpuTCmd, ClBt, Bt, LP) -> tuple_to_list(SB)), ?line stop_node(Node), ?line ok. - + +scheduler_threads(Config) when is_list(Config) -> + SmpSupport = erlang:system_info(smp_support), + {Sched, SchedOnln, _} = get_sstate(Config, ""), + %% Configure half the number of both the scheduler threads and + %% the scheduler threads online. + {HalfSched, HalfSchedOnln} = case SmpSupport of + false -> {1,1}; + true -> + {Sched div 2, + SchedOnln div 2} + end, + {HalfSched, HalfSchedOnln, _} = get_sstate(Config, "+SP 50:50"), + %% Use +S to configure 4x the number of scheduler threads and + %% 4x the number of scheduler threads online, but alter that + %% setting using +SP to 50% scheduler threads and 25% scheduler + %% threads online. The result should be 2x scheduler threads and + %% 1x scheduler threads online. + TwiceSched = case SmpSupport of + false -> 1; + true -> Sched*2 + end, + FourSched = integer_to_list(Sched*4), + FourSchedOnln = integer_to_list(SchedOnln*4), + CombinedCmd1 = "+S "++FourSched++":"++FourSchedOnln++" +SP50:25", + {TwiceSched, SchedOnln, _} = get_sstate(Config, CombinedCmd1), + %% Now do the same test but with the +S and +SP options in the + %% opposite order, since order shouldn't matter. + CombinedCmd2 = "+SP50:25 +S "++FourSched++":"++FourSchedOnln, + {TwiceSched, SchedOnln, _} = get_sstate(Config, CombinedCmd2), + %% Apply two +SP options to make sure the second overrides the first + TwoCmd = "+SP 25:25 +SP 100:100", + {Sched, SchedOnln, _} = get_sstate(Config, TwoCmd), + %% Configure 50% of scheduler threads online only + {Sched, HalfSchedOnln, _} = get_sstate(Config, "+SP:50"), + %% Configure 2x scheduler threads only + {TwiceSched, SchedOnln, _} = get_sstate(Config, "+SP 200"), + %% Test resetting the scheduler counts + ResetCmd = "+S "++FourSched++":"++FourSchedOnln++" +S 0:0", + {Sched, SchedOnln, _} = get_sstate(Config, ResetCmd), + %% Test negative +S settings, but only for SMP-enabled emulators + case SmpSupport of + false -> ok; + true -> + SchedMinus1 = Sched-1, + SchedOnlnMinus1 = SchedOnln-1, + {SchedMinus1, SchedOnlnMinus1, _} = get_sstate(Config, "+S -1"), + {Sched, SchedOnlnMinus1, _} = get_sstate(Config, "+S :-1"), + {SchedMinus1, SchedOnlnMinus1, _} = get_sstate(Config, "+S -1:-1") + end, + ok. + +dirty_scheduler_threads(Config) when is_list(Config) -> + SmpSupport = erlang:system_info(smp_support), + try + erlang:system_info(dirty_cpu_schedulers), + dirty_scheduler_threads_test(Config, SmpSupport) + catch + error:badarg -> + {skipped, "No dirty scheduler support"} + end. + +dirty_scheduler_threads_test(Config, SmpSupport) -> + {Sched, SchedOnln, _} = get_dsstate(Config, ""), + {HalfSched, HalfSchedOnln} = case SmpSupport of + false -> {1,1}; + true -> + {Sched div 2, + SchedOnln div 2} + end, + Cmd1 = "+SDcpu "++integer_to_list(HalfSched)++":"++ + integer_to_list(HalfSchedOnln), + {HalfSched, HalfSchedOnln, _} = get_dsstate(Config, Cmd1), + {HalfSched, HalfSchedOnln, _} = get_dsstate(Config, "+SDPcpu 50:50"), + IOSched = 20, + {_, _, IOSched} = get_dsstate(Config, "+SDio "++integer_to_list(IOSched)), + {ok, Node} = start_node(Config, ""), + [ok] = mcall(Node, [fun() -> dirty_schedulers_online_test() end]), + ok. + +dirty_schedulers_online_test() -> + dirty_schedulers_online_test(erlang:system_info(smp_support)). +dirty_schedulers_online_test(false) -> ok; +dirty_schedulers_online_test(true) -> + dirty_schedulers_online_smp_test(erlang:system_info(schedulers_online)). +dirty_schedulers_online_smp_test(SchedOnln) when SchedOnln < 4 -> ok; +dirty_schedulers_online_smp_test(SchedOnln) -> + DirtyCPUSchedOnln = erlang:system_info(dirty_cpu_schedulers_online), + SchedOnln = DirtyCPUSchedOnln, + HalfSchedOnln = SchedOnln div 2, + SchedOnln = erlang:system_flag(schedulers_online, HalfSchedOnln), + HalfDirtyCPUSchedOnln = DirtyCPUSchedOnln div 2, + HalfDirtyCPUSchedOnln = erlang:system_flag(schedulers_online, SchedOnln), + DirtyCPUSchedOnln = erlang:system_flag(dirty_cpu_schedulers_online, + HalfDirtyCPUSchedOnln), + HalfDirtyCPUSchedOnln = erlang:system_info(dirty_cpu_schedulers_online), + QrtrDirtyCPUSchedOnln = HalfDirtyCPUSchedOnln div 2, + SchedOnln = erlang:system_flag(schedulers_online, HalfSchedOnln), + QrtrDirtyCPUSchedOnln = erlang:system_info(dirty_cpu_schedulers_online), + ok. + +get_sstate(Config, Cmd) -> + {ok, Node} = start_node(Config, Cmd), + [SState] = mcall(Node, [fun () -> + erlang:system_info(schedulers_state) + end]), + stop_node(Node), + SState. + +get_dsstate(Config, Cmd) -> + {ok, Node} = start_node(Config, Cmd), + [DSCPU] = mcall(Node, [fun () -> + erlang:system_info(dirty_cpu_schedulers) + end]), + [DSCPUOnln] = mcall(Node, [fun () -> + erlang:system_info(dirty_cpu_schedulers_online) + end]), + [DSIO] = mcall(Node, [fun () -> + erlang:system_info(dirty_io_schedulers) + end]), + stop_node(Node), + {DSCPU, DSCPUOnln, DSIO}. + scheduler_suspend(Config) when is_list(Config) -> ?line Dog = ?t:timetrap(?t:minutes(5)), ?line lists:foreach(fun (S) -> scheduler_suspend_test(Config, S) end, @@ -1111,16 +1237,40 @@ sst2_loop(N) -> erlang:system_flag(multi_scheduling, unblock), sst2_loop(N-1). -sst3_loop(_S, 0) -> - ok; sst3_loop(S, N) -> + try erlang:system_info(dirty_cpu_schedulers) of + DS -> + sst3_loop_with_dirty_schedulers(S, DS, N) + catch + error:badarg -> + sst3_loop_normal_schedulers_only(S, N) + end. + +sst3_loop_normal_schedulers_only(_S, 0) -> + ok; +sst3_loop_normal_schedulers_only(S, N) -> + erlang:system_flag(schedulers_online, (S div 2)+1), + erlang:system_flag(schedulers_online, 1), + erlang:system_flag(schedulers_online, (S div 2)+1), + erlang:system_flag(schedulers_online, S), + erlang:system_flag(schedulers_online, 1), + erlang:system_flag(schedulers_online, S), + sst3_loop_normal_schedulers_only(S, N-1). + +sst3_loop_with_dirty_schedulers(_S, _DS, 0) -> + ok; +sst3_loop_with_dirty_schedulers(S, DS, N) -> erlang:system_flag(schedulers_online, (S div 2)+1), + erlang:system_flag(dirty_cpu_schedulers_online, (DS div 2)+1), erlang:system_flag(schedulers_online, 1), erlang:system_flag(schedulers_online, (S div 2)+1), + erlang:system_flag(dirty_cpu_schedulers_online, 1), erlang:system_flag(schedulers_online, S), + erlang:system_flag(dirty_cpu_schedulers_online, DS), erlang:system_flag(schedulers_online, 1), erlang:system_flag(schedulers_online, S), - sst3_loop(S, N-1). + erlang:system_flag(dirty_cpu_schedulers_online, DS), + sst3_loop_with_dirty_schedulers(S, DS, N-1). reader_groups(Config) when is_list(Config) -> %% White box testing. These results are correct, but other results @@ -1435,7 +1585,7 @@ mcall(Node, Funs) -> end, Refs). erl_rel_flag_var() -> - "ERL_"++erlang:system_info(otp_release)++"_FLAGS". + "ERL_OTP"++erlang:system_info(otp_release)++"_FLAGS". clear_erl_rel_flags() -> EnvVar = erl_rel_flag_var(), @@ -1680,11 +1830,11 @@ do_it(Tracer, Low, Normal, High, Max) -> do_it(Tracer, Low, Normal, High, Max, RedsPerSchedLimit) -> OldPrio = process_flag(priority, max), go_work(Low, Normal, High, Max), - StartWait = now(), + StartWait = erlang:monotonic_time(milli_seconds), %% Give the emulator a chance to balance the load... wait_balance(5), - EndWait = now(), - BalanceWait = timer:now_diff(EndWait,StartWait) div 1000, + EndWait = erlang:monotonic_time(milli_seconds), + BalanceWait = EndWait-StartWait, erlang:display({balance_wait, BalanceWait}), Timeout = ?DEFAULT_TIMEOUT - ?t:minutes(4) - BalanceWait, Res = case Timeout < ?MIN_SCHEDULER_TEST_TIMEOUT of @@ -1878,17 +2028,14 @@ start_node(Config) -> start_node(Config, ""). start_node(Config, Args) when is_list(Config) -> - ?line Pa = filename:dirname(code:which(?MODULE)), - ?line {A, B, C} = now(), - ?line Name = list_to_atom(atom_to_list(?MODULE) - ++ "-" - ++ atom_to_list(?config(testcase, Config)) - ++ "-" - ++ integer_to_list(A) - ++ "-" - ++ integer_to_list(B) - ++ "-" - ++ integer_to_list(C)), + Pa = filename:dirname(code:which(?MODULE)), + Name = list_to_atom(atom_to_list(?MODULE) + ++ "-" + ++ atom_to_list(?config(testcase, Config)) + ++ "-" + ++ integer_to_list(erlang:system_time(seconds)) + ++ "-" + ++ integer_to_list(erlang:unique_integer([positive]))), ?line ?t:start_node(Name, slave, [{args, "-pa "++Pa++" "++Args}]). stop_node(Node) -> |