%% %% %CopyrightBegin% %% %% Copyright Ericsson AB 2008-2010. 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/. %% %% 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. %% %% %CopyrightEnd% %% %%%------------------------------------------------------------------- %%% File : scheduler_SUITE.erl %%% Author : Rickard Green %%% Description : %%% %%% Created : 27 Oct 2008 by Rickard Green %%%------------------------------------------------------------------- -module(scheduler_SUITE). %-define(line_trace, 1). -include("test_server.hrl"). %-compile(export_all). -export([all/1, init_per_testcase/2, fin_per_testcase/2]). -export([equal/1, few_low/1, many_low/1, equal_with_part_time_high/1, equal_with_part_time_max/1, equal_and_high_with_part_time_max/1, equal_with_high/1, equal_with_high_max/1, bound_process/1, scheduler_bind/1, scheduler_bind_types/1, cpu_topology/1, sct_cmd/1, sbt_cmd/1, scheduler_suspend/1]). -define(DEFAULT_TIMEOUT, ?t:minutes(10)). -define(MIN_SCHEDULER_TEST_TIMEOUT, ?t:minutes(1)). all(doc) -> []; all(suite) -> [equal, few_low, many_low, equal_with_part_time_high, equal_with_part_time_max, equal_and_high_with_part_time_max, equal_with_high, equal_with_high_max, bound_process, scheduler_bind, scheduler_suspend]. init_per_testcase(Case, Config) when is_list(Config) -> Dog = ?t:timetrap(?DEFAULT_TIMEOUT), process_flag(priority, max), erlang:display({'------------', ?MODULE, Case, '------------'}), OkRes = ok, [{watchdog, Dog}, {testcase, Case}, {ok_res, OkRes} |Config]. fin_per_testcase(_Case, Config) when is_list(Config) -> Dog = ?config(watchdog, Config), ?t:timetrap_cancel(Dog), ok. -define(ERTS_RUNQ_CHECK_BALANCE_REDS_PER_SCHED, (2000*2000)). -define(DEFAULT_TEST_REDS_PER_SCHED, 200000000). %% %% Test cases %% equal(Config) when is_list(Config) -> low_normal_test(Config, 500, 500). few_low(Config) when is_list(Config) -> low_normal_test(Config, 1000, 2*active_schedulers()). many_low(Config) when is_list(Config) -> low_normal_test(Config, 2*active_schedulers(), 1000). low_normal_test(Config, NW, LW) -> ?line Tracer = start_tracer(), ?line Low = workers(LW, low), ?line Normal = workers(NW, normal), ?line Res = do_it(Tracer, Low, Normal, [], []), ?line chk_result(Res, LW, NW, 0, 0, true, false, false), ?line workers_exit([Low, Normal]), ?line ok(Res, Config). equal_with_part_time_high(Config) when is_list(Config) -> ?line NW = 500, ?line LW = 500, ?line HW = 1, ?line Tracer = start_tracer(), ?line Normal = workers(NW, normal), ?line Low = workers(LW, low), ?line High = part_time_workers(HW, high), ?line Res = do_it(Tracer, Low, Normal, High, []), ?line chk_result(Res, LW, NW, HW, 0, true, true, false), ?line workers_exit([Low, Normal, High]), ?line ok(Res, Config). equal_and_high_with_part_time_max(Config) when is_list(Config) -> ?line NW = 500, ?line LW = 500, ?line HW = 500, ?line MW = 1, ?line Tracer = start_tracer(), ?line Low = workers(LW, low), ?line Normal = workers(NW, normal), ?line High = workers(HW, high), ?line Max = part_time_workers(MW, max), ?line Res = do_it(Tracer, Low, Normal, High, Max), ?line chk_result(Res, LW, NW, HW, MW, false, true, true), ?line workers_exit([Low, Normal, Max]), ?line ok(Res, Config). equal_with_part_time_max(Config) when is_list(Config) -> ?line NW = 500, ?line LW = 500, ?line MW = 1, ?line Tracer = start_tracer(), ?line Low = workers(LW, low), ?line Normal = workers(NW, normal), ?line Max = part_time_workers(MW, max), ?line Res = do_it(Tracer, Low, Normal, [], Max), ?line chk_result(Res, LW, NW, 0, MW, true, false, true), ?line workers_exit([Low, Normal, Max]), ?line ok(Res, Config). equal_with_high(Config) when is_list(Config) -> ?line NW = 500, ?line LW = 500, ?line HW = 1, ?line Tracer = start_tracer(), ?line Low = workers(LW, low), ?line Normal = workers(NW, normal), ?line High = workers(HW, high), ?line Res = do_it(Tracer, Low, Normal, High, []), ?line LNExe = case active_schedulers() of S when S =< HW -> false; _ -> true end, ?line chk_result(Res, LW, NW, HW, 0, LNExe, true, false), ?line workers_exit([Low, Normal, High]), ?line ok(Res, Config). equal_with_high_max(Config) when is_list(Config) -> ?line NW = 500, ?line LW = 500, ?line HW = 1, ?line MW = 1, ?line Tracer = start_tracer(), ?line Normal = workers(NW, normal), ?line Low = workers(LW, low), ?line High = workers(HW, high), ?line Max = workers(MW, max), ?line Res = do_it(Tracer, Low, Normal, High, Max), ?line {LNExe, HExe} = case active_schedulers() of S when S =< MW -> {false, false}; S when S =< (MW + HW) -> {false, true}; _ -> {true, true} end, ?line chk_result(Res, LW, NW, HW, MW, LNExe, HExe, true), ?line workers_exit([Low, Normal, Max]), ?line ok(Res, Config). bound_process(Config) when is_list(Config) -> case erlang:system_info(run_queues) == erlang:system_info(schedulers) of true -> ?line NStartBase = 20000, ?line NStart = case {erlang:system_info(debug_compiled), erlang:system_info(lock_checking)} of {true, true} -> NStartBase div 100; {_, true} -> NStartBase div 10; _ -> NStartBase end, ?line MStart = 100, ?line Seq = lists:seq(1, 100), ?line Tester = self(), ?line Procs = lists:map( fun (N) when N rem 2 == 0 -> spawn_opt(fun () -> bound_loop(NStart, NStart, MStart, 1), Tester ! {self(), done} end, [{scheduler, 1}, link]); (_N) -> spawn_link(fun () -> bound_loop(NStart, NStart, MStart, false), Tester ! {self(), done} end) end, Seq), ?line lists:foreach(fun (P) -> receive {P, done} -> ok end end, Procs), ?line ok; false -> {skipped, "Functionality not supported"} end. bound_loop(_, 0, 0, _) -> ok; bound_loop(NS, 0, M, false) -> bound_loop(NS, NS, M-1, false); bound_loop(NS, N, M, false) -> erlang:system_info(scheduler_id), bound_loop(NS, N-1, M, false); bound_loop(NS, 0, M, Sched) -> NewSched = (Sched rem erlang:system_info(schedulers_online)) + 1, Sched = process_flag(scheduler, NewSched), NewSched = erlang:system_info(scheduler_id), bound_loop(NS, NS, M-1, NewSched); bound_loop(NS, N, M, Sched) -> Sched = erlang:system_info(scheduler_id), bound_loop(NS, N-1, M, Sched). scheduler_bind(suite) -> [scheduler_bind_types, cpu_topology, sct_cmd, sbt_cmd]. -define(TOPOLOGY_A_CMD, "+sct" "L0-1t0-1c0p0n0" ":L2-3t0-1c1p0n0" ":L4-5t0-1c0p1n0" ":L6-7t0-1c1p1n0" ":L8-9t0-1c0p2n1" ":L10-11t0-1c1p2n1" ":L12-13t0-1c0p3n1" ":L14-15t0-1c1p3n1"). -define(TOPOLOGY_A_TERM, [{node,[{processor,[{core,[{thread,{logical,0}}, {thread,{logical,1}}]}, {core,[{thread,{logical,2}}, {thread,{logical,3}}]}]}, {processor,[{core,[{thread,{logical,4}}, {thread,{logical,5}}]}, {core,[{thread,{logical,6}}, {thread,{logical,7}}]}]}]}, {node,[{processor,[{core,[{thread,{logical,8}}, {thread,{logical,9}}]}, {core,[{thread,{logical,10}}, {thread,{logical,11}}]}]}, {processor,[{core,[{thread,{logical,12}}, {thread,{logical,13}}]}, {core,[{thread,{logical,14}}, {thread,{logical,15}}]}]}]}]). -define(TOPOLOGY_B_CMD, "+sct" "L0-1t0-1c0n0p0" ":L2-3t0-1c1n0p0" ":L4-5t0-1c2n1p0" ":L6-7t0-1c3n1p0" ":L8-9t0-1c0n2p1" ":L10-11t0-1c1n2p1" ":L12-13t0-1c2n3p1" ":L14-15t0-1c3n3p1"). -define(TOPOLOGY_B_TERM, [{processor,[{node,[{core,[{thread,{logical,0}}, {thread,{logical,1}}]}, {core,[{thread,{logical,2}}, {thread,{logical,3}}]}]}, {node,[{core,[{thread,{logical,4}}, {thread,{logical,5}}]}, {core,[{thread,{logical,6}}, {thread,{logical,7}}]}]}]}, {processor,[{node,[{core,[{thread,{logical,8}}, {thread,{logical,9}}]}, {core,[{thread,{logical,10}}, {thread,{logical,11}}]}]}, {node,[{core,[{thread,{logical,12}}, {thread,{logical,13}}]}, {core,[{thread,{logical,14}}, {thread,{logical,15}}]}]}]}]). -define(TOPOLOGY_C_TERM, [{node,[{processor,[{core,[{thread,{logical,0}}, {thread,{logical,1}}]}, {core,[{thread,{logical,2}}, {thread,{logical,3}}]}]}, {processor,[{core,[{thread,{logical,4}}, {thread,{logical,5}}]}, {core,[{thread,{logical,6}}, {thread,{logical,7}}]}]}]}, {processor,[{node,[{core,[{thread,{logical,8}}, {thread,{logical,9}}]}, {core,[{thread,{logical,10}}, {thread,{logical,11}}]}]}, {node,[{core,[{thread,{logical,12}}, {thread,{logical,13}}]}, {core,[{thread,{logical,14}}, {thread,{logical,15}}]}]}]}, {node,[{processor,[{core,[{thread,{logical,16}}, {thread,{logical,17}}]}, {core,[{thread,{logical,18}}, {thread,{logical,19}}]}]}, {processor,[{core,[{thread,{logical,20}}, {thread,{logical,21}}]}, {core,[{thread,{logical,22}}, {thread,{logical,23}}]}]}]}, {processor,[{node,[{core,[{thread,{logical,24}}, {thread,{logical,25}}]}, {core,[{thread,{logical,26}}, {thread,{logical,27}}]}]}, {node,[{core,[{thread,{logical,28}}, {thread,{logical,29}}]}, {core,[{thread,{logical,30}}, {thread,{logical,31}}]}]}]}]). -define(TOPOLOGY_C_CMD, "+sct" "L0-1t0-1c0p0n0" ":L2-3t0-1c1p0n0" ":L4-5t0-1c0p1n0" ":L6-7t0-1c1p1n0" ":L8-9t0-1c0n1p2" ":L10-11t0-1c1n1p2" ":L12-13t0-1c2n2p2" ":L14-15t0-1c3n2p2" ":L16-17t0-1c0p3n3" ":L18-19t0-1c1p3n3" ":L20-21t0-1c0p4n3" ":L22-23t0-1c1p4n3" ":L24-25t0-1c0n4p5" ":L26-27t0-1c1n4p5" ":L28-29t0-1c2n5p5" ":L30-31t0-1c3n5p5"). -define(TOPOLOGY_D_TERM, [{processor,[{node,[{core,[{thread,{logical,0}}, {thread,{logical,1}}]}, {core,[{thread,{logical,2}}, {thread,{logical,3}}]}]}, {node,[{core,[{thread,{logical,4}}, {thread,{logical,5}}]}, {core,[{thread,{logical,6}}, {thread,{logical,7}}]}]}]}, {node,[{processor,[{core,[{thread,{logical,8}}, {thread,{logical,9}}]}, {core,[{thread,{logical,10}}, {thread,{logical,11}}]}]}, {processor,[{core,[{thread,{logical,12}}, {thread,{logical,13}}]}, {core,[{thread,{logical,14}}, {thread,{logical,15}}]}]}]}, {processor,[{node,[{core,[{thread,{logical,16}}, {thread,{logical,17}}]}, {core,[{thread,{logical,18}}, {thread,{logical,19}}]}]}, {node,[{core,[{thread,{logical,20}}, {thread,{logical,21}}]}, {core,[{thread,{logical,22}}, {thread,{logical,23}}]}]}]}, {node,[{processor,[{core,[{thread,{logical,24}}, {thread,{logical,25}}]}, {core,[{thread,{logical,26}}, {thread,{logical,27}}]}]}, {processor,[{core,[{thread,{logical,28}}, {thread,{logical,29}}]}, {core,[{thread,{logical,30}}, {thread,{logical,31}}]}]}]}]). -define(TOPOLOGY_D_CMD, "+sct" "L0-1t0-1c0n0p0" ":L2-3t0-1c1n0p0" ":L4-5t0-1c2n1p0" ":L6-7t0-1c3n1p0" ":L8-9t0-1c0p1n2" ":L10-11t0-1c1p1n2" ":L12-13t0-1c0p2n2" ":L14-15t0-1c1p2n2" ":L16-17t0-1c0n3p3" ":L18-19t0-1c1n3p3" ":L20-21t0-1c2n4p3" ":L22-23t0-1c3n4p3" ":L24-25t0-1c0p4n5" ":L26-27t0-1c1p4n5" ":L28-29t0-1c0p5n5" ":L30-31t0-1c1p5n5"). -define(TOPOLOGY_E_CMD, "+sct" "L0-1t0-1c0p0n0" ":L2-3t0-1c1p0n0" ":L4-5t0-1c2p0n0" ":L6-7t0-1c3p0n0" ":L8-9t0-1c0p1n1" ":L10-11t0-1c1p1n1" ":L12-13t0-1c2p1n1" ":L14-15t0-1c3p1n1"). -define(TOPOLOGY_E_TERM, [{node,[{processor,[{core,[{thread,{logical,0}}, {thread,{logical,1}}]}, {core,[{thread,{logical,2}}, {thread,{logical,3}}]}, {core,[{thread,{logical,4}}, {thread,{logical,5}}]}, {core,[{thread,{logical,6}}, {thread,{logical,7}}]}]}]}, {node,[{processor,[{core,[{thread,{logical,8}}, {thread,{logical,9}}]}, {core,[{thread,{logical,10}}, {thread,{logical,11}}]}, {core,[{thread,{logical,12}}, {thread,{logical,13}}]}, {core,[{thread,{logical,14}}, {thread,{logical,15}}]}]}]}]). -define(TOPOLOGY_F_CMD, "+sct" "L0-1t0-1c0n0p0" ":L2-3t0-1c1n0p0" ":L4-5t0-1c2n0p0" ":L6-7t0-1c3n0p0" ":L8-9t0-1c4n1p0" ":L10-11t0-1c5n1p0" ":L12-13t0-1c6n1p0" ":L14-15t0-1c7n1p0" ":L16-17t0-1c8n2p0" ":L18-19t0-1c9n2p0" ":L20-21t0-1c10n2p0" ":L22-23t0-1c11n2p0" ":L24-25t0-1c12n3p0" ":L26-27t0-1c13n3p0" ":L28-29t0-1c14n3p0" ":L30-31t0-1c15n3p0"). -define(TOPOLOGY_F_TERM, [{processor,[{node,[{core,[{thread,{logical,0}}, {thread,{logical,1}}]}, {core,[{thread,{logical,2}}, {thread,{logical,3}}]}, {core,[{thread,{logical,4}}, {thread,{logical,5}}]}, {core,[{thread,{logical,6}}, {thread,{logical,7}}]}]}, {node,[{core,[{thread,{logical,8}}, {thread,{logical,9}}]}, {core,[{thread,{logical,10}}, {thread,{logical,11}}]}, {core,[{thread,{logical,12}}, {thread,{logical,13}}]}, {core,[{thread,{logical,14}}, {thread,{logical,15}}]}]}, {node,[{core,[{thread,{logical,16}}, {thread,{logical,17}}]}, {core,[{thread,{logical,18}}, {thread,{logical,19}}]}, {core,[{thread,{logical,20}}, {thread,{logical,21}}]}, {core,[{thread,{logical,22}}, {thread,{logical,23}}]}]}, {node,[{core,[{thread,{logical,24}}, {thread,{logical,25}}]}, {core,[{thread,{logical,26}}, {thread,{logical,27}}]}, {core,[{thread,{logical,28}}, {thread,{logical,29}}]}, {core,[{thread,{logical,30}}, {thread,{logical,31}}]}]}]}]). bindings(Node, BindType) -> Parent = self(), Ref = make_ref(), spawn_link(Node, fun () -> enable_internal_state(), Res = (catch erts_debug:get_internal_state( {fake_scheduler_bindings, BindType})), Parent ! {Ref, Res} end), receive {Ref, Res} -> ?t:format("~p: ~p~n", [BindType, Res]), Res end. scheduler_bind_types(Config) when is_list(Config) -> ?line OldRelFlags = clear_erl_rel_flags(), try scheduler_bind_types_test(Config, ?TOPOLOGY_A_TERM, ?TOPOLOGY_A_CMD, a), scheduler_bind_types_test(Config, ?TOPOLOGY_B_TERM, ?TOPOLOGY_B_CMD, b), scheduler_bind_types_test(Config, ?TOPOLOGY_C_TERM, ?TOPOLOGY_C_CMD, c), scheduler_bind_types_test(Config, ?TOPOLOGY_D_TERM, ?TOPOLOGY_D_CMD, d), scheduler_bind_types_test(Config, ?TOPOLOGY_E_TERM, ?TOPOLOGY_E_CMD, e), scheduler_bind_types_test(Config, ?TOPOLOGY_F_TERM, ?TOPOLOGY_F_CMD, f) after restore_erl_rel_flags(OldRelFlags) end, ?line ok. scheduler_bind_types_test(Config, Topology, CmdLine, TermLetter) -> ?line ?t:format("Testing (~p): ~p~n", [TermLetter, Topology]), ?line {ok, Node0} = start_node(Config), ?line _ = rpc:call(Node0, erlang, system_flag, [cpu_topology, Topology]), ?line cmp(Topology, rpc:call(Node0, erlang, system_info, [cpu_topology])), ?line check_bind_types(Node0, TermLetter), ?line stop_node(Node0), ?line {ok, Node1} = start_node(Config, CmdLine), ?line cmp(Topology, rpc:call(Node1, erlang, system_info, [cpu_topology])), ?line check_bind_types(Node1, TermLetter), ?line stop_node(Node1). check_bind_types(Node, a) -> ?line {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15} = bindings(Node, no_spread), ?line {0,2,4,6,8,10,12,14,1,3,5,7,9,11,13,15} = bindings(Node, thread_spread), ?line {0,4,8,12,2,6,10,14,1,5,9,13,3,7,11,15} = bindings(Node, processor_spread), ?line {0,8,4,12,2,10,6,14,1,9,5,13,3,11,7,15} = bindings(Node, spread), ?line {0,2,4,6,1,3,5,7,8,10,12,14,9,11,13,15} = bindings(Node, no_node_thread_spread), ?line {0,4,2,6,1,5,3,7,8,12,10,14,9,13,11,15} = bindings(Node, no_node_processor_spread), ?line {0,4,2,6,8,12,10,14,1,5,3,7,9,13,11,15} = bindings(Node, thread_no_node_processor_spread), ?line {0,4,2,6,8,12,10,14,1,5,3,7,9,13,11,15} = bindings(Node, default_bind), ?line ok; check_bind_types(Node, b) -> ?line {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15} = bindings(Node, no_spread), ?line {0,2,4,6,8,10,12,14,1,3,5,7,9,11,13,15} = bindings(Node, thread_spread), ?line {0,8,2,10,4,12,6,14,1,9,3,11,5,13,7,15} = bindings(Node, processor_spread), ?line {0,8,4,12,2,10,6,14,1,9,5,13,3,11,7,15} = bindings(Node, spread), ?line {0,2,1,3,4,6,5,7,8,10,9,11,12,14,13,15} = bindings(Node, no_node_thread_spread), ?line {0,2,1,3,4,6,5,7,8,10,9,11,12,14,13,15} = bindings(Node, no_node_processor_spread), ?line {0,2,4,6,8,10,12,14,1,3,5,7,9,11,13,15} = bindings(Node, thread_no_node_processor_spread), ?line {0,2,4,6,8,10,12,14,1,3,5,7,9,11,13,15} = bindings(Node, default_bind), ?line ok; check_bind_types(Node, c) -> ?line {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24, 25,26,27,28,29,30,31} = bindings(Node, no_spread), ?line {0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,1,3,5,7,9,11,13,15, 17,19,21,23,25,27,29,31} = bindings(Node, thread_spread), ?line {0,4,8,16,20,24,2,6,10,18,22,26,12,28,14,30,1,5,9,17,21,25, 3,7,11,19,23,27,13,29,15,31} = bindings(Node, processor_spread), ?line {0,8,16,24,4,20,12,28,2,10,18,26,6,22,14,30,1,9,17,25,5,21,13,29,3,11, 19,27,7,23,15,31} = bindings(Node, spread), ?line {0,2,4,6,1,3,5,7,8,10,9,11,12,14,13,15,16,18,20,22,17,19,21,23,24,26, 25,27,28,30,29,31} = bindings(Node, no_node_thread_spread), ?line {0,4,2,6,1,5,3,7,8,10,9,11,12,14,13,15,16,20,18,22,17,21,19,23,24,26, 25,27,28,30,29,31} = bindings(Node, no_node_processor_spread), ?line {0,4,2,6,8,10,12,14,16,20,18,22,24,26,28,30,1,5,3,7,9,11,13,15,17,21, 19,23,25,27,29,31} = bindings(Node, thread_no_node_processor_spread), ?line {0,4,2,6,8,10,12,14,16,20,18,22,24,26,28,30,1,5,3,7,9,11,13,15,17,21, 19,23,25,27,29,31} = bindings(Node, default_bind), ?line ok; check_bind_types(Node, d) -> ?line {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24, 25,26,27,28,29,30,31} = bindings(Node, no_spread), ?line {0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,1,3,5,7,9,11,13,15, 17,19,21,23,25,27,29,31} = bindings(Node, thread_spread), ?line {0,8,12,16,24,28,2,10,14,18,26,30,4,20,6,22,1,9,13,17,25,29,3,11,15, 19,27,31,5,21,7,23} = bindings(Node, processor_spread), ?line {0,8,16,24,12,28,4,20,2,10,18,26,14,30,6,22,1,9,17,25,13,29,5,21,3,11, 19,27,15,31,7,23} = bindings(Node, spread), ?line {0,2,1,3,4,6,5,7,8,10,12,14,9,11,13,15,16,18,17,19,20,22,21,23,24,26, 28,30,25,27,29,31} = bindings(Node, no_node_thread_spread), ?line {0,2,1,3,4,6,5,7,8,12,10,14,9,13,11,15,16,18,17,19,20,22,21,23,24,28, 26,30,25,29,27,31} = bindings(Node, no_node_processor_spread), ?line {0,2,4,6,8,12,10,14,16,18,20,22,24,28,26,30,1,3,5,7,9,13,11,15,17,19, 21,23,25,29,27,31} = bindings(Node, thread_no_node_processor_spread), ?line {0,2,4,6,8,12,10,14,16,18,20,22,24,28,26,30,1,3,5,7,9,13,11,15,17,19, 21,23,25,29,27,31} = bindings(Node, default_bind), ?line ok; check_bind_types(Node, e) -> ?line {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15} = bindings(Node, no_spread), ?line {0,2,4,6,8,10,12,14,1,3,5,7,9,11,13,15} = bindings(Node, thread_spread), ?line {0,8,2,10,4,12,6,14,1,9,3,11,5,13,7,15} = bindings(Node, processor_spread), ?line {0,8,2,10,4,12,6,14,1,9,3,11,5,13,7,15} = bindings(Node, spread), ?line {0,2,4,6,1,3,5,7,8,10,12,14,9,11,13,15} = bindings(Node, no_node_thread_spread), ?line {0,2,4,6,1,3,5,7,8,10,12,14,9,11,13,15} = bindings(Node, no_node_processor_spread), ?line {0,2,4,6,8,10,12,14,1,3,5,7,9,11,13,15} = bindings(Node, thread_no_node_processor_spread), ?line {0,2,4,6,8,10,12,14,1,3,5,7,9,11,13,15} = bindings(Node, default_bind), ?line ok; check_bind_types(Node, f) -> ?line {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24, 25,26,27,28,29,30,31} = bindings(Node, no_spread), ?line {0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,1,3,5,7,9,11,13,15, 17,19,21,23,25,27,29,31} = bindings(Node, thread_spread), ?line {0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,1,3,5,7,9,11,13, 15,17,19,21,23,25,27,29,31} = bindings(Node, processor_spread), ?line {0,8,16,24,2,10,18,26,4,12,20,28,6,14,22,30,1,9,17,25,3,11,19,27,5,13, 21,29,7,15,23,31} = bindings(Node, spread), ?line {0,2,4,6,1,3,5,7,8,10,12,14,9,11,13,15,16,18,20,22,17,19,21,23,24,26, 28,30,25,27,29,31} = bindings(Node, no_node_thread_spread), ?line {0,2,4,6,1,3,5,7,8,10,12,14,9,11,13,15,16,18,20,22,17,19,21,23,24,26, 28,30,25,27,29,31} = bindings(Node, no_node_processor_spread), ?line {0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,1,3,5,7,9,11,13,15,17,19, 21,23,25,27,29,31} = bindings(Node, thread_no_node_processor_spread), ?line {0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,1,3,5,7,9,11,13,15,17,19, 21,23,25,27,29,31} = bindings(Node, default_bind), ?line ok; check_bind_types(Node, _) -> ?line bindings(Node, no_spread), ?line bindings(Node, thread_spread), ?line bindings(Node, processor_spread), ?line bindings(Node, spread), ?line bindings(Node, no_node_thread_spread), ?line bindings(Node, no_node_processor_spread), ?line bindings(Node, thread_no_node_processor_spread), ?line bindings(Node, default_bind), ?line ok. cpu_topology(Config) when is_list(Config) -> ?line OldRelFlags = clear_erl_rel_flags(), try ?line cpu_topology_test( Config, [{node,[{processor,[{core,{logical,0}}, {core,{logical,1}}]}]}, {processor,[{node,[{core,{logical,2}}, {core,{logical,3}}]}]}, {node,[{processor,[{core,{logical,4}}, {core,{logical,5}}]}]}, {processor,[{node,[{core,{logical,6}}, {core,{logical,7}}]}]}], "+sct " "L0-1c0-1p0n0" ":L2-3c0-1n1p1" ":L4-5c0-1p2n2" ":L6-7c0-1n3p3"), ?line cpu_topology_test( Config, [{node,[{processor,[{core,{logical,0}}, {core,{logical,1}}]}, {processor,[{core,{logical,2}}, {core,{logical,3}}]}]}, {processor,[{node,[{core,{logical,4}}, {core,{logical,5}}]}, {node,[{core,{logical,6}}, {core,{logical,7}}]}]}, {node,[{processor,[{core,{logical,8}}, {core,{logical,9}}]}, {processor,[{core,{logical,10}}, {core,{logical,11}}]}]}, {processor,[{node,[{core,{logical,12}}, {core,{logical,13}}]}, {node,[{core,{logical,14}}, {core,{logical,15}}]}]}], "+sct " "L0-1c0-1p0n0" ":L2-3c0-1p1n0" ":L4-5c0-1n1p2" ":L6-7c2-3n2p2" ":L8-9c0-1p3n3" ":L10-11c0-1p4n3" ":L12-13c0-1n4p5" ":L14-15c2-3n5p5"), ?line cpu_topology_test( Config, [{node,[{processor,[{core,{logical,0}}, {core,{logical,1}}]}]}, {processor,[{node,[{core,{logical,2}}, {core,{logical,3}}]}]}, {processor,[{node,[{core,{logical,4}}, {core,{logical,5}}]}]}, {node,[{processor,[{core,{logical,6}}, {core,{logical,7}}]}]}, {node,[{processor,[{core,{logical,8}}, {core,{logical,9}}]}]}, {processor,[{node,[{core,{logical,10}}, {core,{logical,11}}]}]}], "+sct " "L0-1c0-1p0n0" ":L2-3c0-1n1p1" ":L4-5c0-1n2p2" ":L6-7c0-1p3n3" ":L8-9c0-1p4n4" ":L10-11c0-1n5p5") after restore_erl_rel_flags(OldRelFlags) end, ?line ok. cpu_topology_test(Config, Topology, Cmd) -> ?line ?t:format("Testing~n ~p~n ~p~n", [Topology, Cmd]), ?line cpu_topology_bif_test(Config, Topology), ?line cpu_topology_cmdline_test(Config, Topology, Cmd), ?line ok. cpu_topology_bif_test(_Config, false) -> ?line ok; cpu_topology_bif_test(Config, Topology) -> ?line {ok, Node} = start_node(Config), ?line _ = rpc:call(Node, erlang, system_flag, [cpu_topology, Topology]), ?line cmp(Topology, rpc:call(Node, erlang, system_info, [cpu_topology])), ?line stop_node(Node), ?line ok. cpu_topology_cmdline_test(_Config, _Topology, false) -> ?line ok; cpu_topology_cmdline_test(Config, Topology, Cmd) -> ?line {ok, Node} = start_node(Config, Cmd), ?line cmp(Topology, rpc:call(Node, erlang, system_info, [cpu_topology])), ?line stop_node(Node), ?line ok. sct_cmd(Config) when is_list(Config) -> ?line Topology = ?TOPOLOGY_A_TERM, ?line OldRelFlags = clear_erl_rel_flags(), try ?line {ok, Node} = start_node(Config, ?TOPOLOGY_A_CMD), ?line cmp(Topology, rpc:call(Node, erlang, system_info, [cpu_topology])), ?line cmp(Topology, rpc:call(Node, erlang, system_flag, [cpu_topology, Topology])), ?line cmp(Topology, rpc:call(Node, erlang, system_info, [cpu_topology])), ?line stop_node(Node) after restore_erl_rel_flags(OldRelFlags) end, ?line ok. -define(BIND_TYPES, [{"u", unbound}, {"ns", no_spread}, {"ts", thread_spread}, {"ps", processor_spread}, {"s", spread}, {"nnts", no_node_thread_spread}, {"nnps", no_node_processor_spread}, {"tnnps", thread_no_node_processor_spread}, {"db", thread_no_node_processor_spread}]). sbt_cmd(Config) when is_list(Config) -> Bind = try OldVal = erlang:system_flag(scheduler_bind_type, default_bind), erlang:system_flag(scheduler_bind_type, OldVal), go_for_it catch error:notsup -> notsup; error:_ -> go_for_it end, case Bind of notsup -> ?line {skipped, "Binding of schedulers not supported"}; go_for_it -> CpuTCmd = case erlang:system_info({cpu_topology,detected}) of undefined -> case os:type() of linux -> case erlang:system_info(logical_processors) of 1 -> "+sctL0"; N when is_integer(N) -> NS = integer_to_list(N-1), "+sctL0-"++NS++"p0-"++NS; _ -> false end; _ -> false end; _ -> "" end, case CpuTCmd of false -> ?line {skipped, "Don't know how to create cpu topology"}; _ -> case erlang:system_info(logical_processors) of LP when is_integer(LP) -> OldRelFlags = clear_erl_rel_flags(), try lists:foreach(fun ({ClBt, Bt}) -> ?line sbt_test(Config, CpuTCmd, ClBt, Bt, LP) end, ?BIND_TYPES) after restore_erl_rel_flags(OldRelFlags) end, ?line ok; _ -> ?line {skipped, "Don't know the amount of logical processors"} end end end. sbt_test(Config, CpuTCmd, ClBt, Bt, LP) -> ?line ?t:format("Testing +sbt ~s (~p)~n", [ClBt, Bt]), ?line LPS = integer_to_list(LP), ?line Cmd = CpuTCmd++" +sbt "++ClBt++" +S"++LPS++":"++LPS, ?line {ok, Node} = start_node(Config, Cmd), ?line Bt = rpc:call(Node, erlang, system_info, [scheduler_bind_type]), ?line SB = rpc:call(Node, erlang, system_info, [scheduler_bindings]), ?line ?t:format("scheduler bindings: ~p~n", [SB]), ?line BS = case {Bt, erlang:system_info(logical_processors_available)} of {unbound, _} -> 0; {_, Int} when is_integer(Int) -> Int; {_, _} -> LP end, ?line lists:foldl(fun (S, 0) -> ?line unbound = S, 0; (S, N) -> ?line true = is_integer(S), N-1 end, BS, tuple_to_list(SB)), ?line stop_node(Node), ?line ok. scheduler_suspend(Config) when is_list(Config) -> ?line Dog = ?t:timetrap(?t:minutes(2)), ?line lists:foreach(fun (S) -> scheduler_suspend_test(Config, S) end, [64, 32, 16, default]), ?line ?t:timetrap_cancel(Dog), ?line ok. scheduler_suspend_test(Config, Schedulers) -> ?line Cmd = case Schedulers of default -> ""; _ -> S = integer_to_list(Schedulers), "+S"++S++":"++S end, ?line {ok, Node} = start_node(Config, Cmd), ?line [SState] = mcall(Node, [fun () -> erlang:system_info(schedulers_state) end]), ?line {Sched, _, _} = SState, ?line true = is_integer(Sched), ?line [ok] = mcall(Node, [fun () -> sst0_loop(300) end]), ?line [ok] = mcall(Node, [fun () -> sst1_loop(300) end]), ?line [ok] = mcall(Node, [fun () -> sst2_loop(300) end]), ?line [ok, ok, ok, ok, ok] = mcall(Node, [fun () -> sst0_loop(200) end, fun () -> sst1_loop(200) end, fun () -> sst2_loop(200) end, fun () -> sst2_loop(200) end, fun () -> sst3_loop(Sched, 200) end]), ?line [SState] = mcall(Node, [fun () -> erlang:system_info(schedulers_state) end]), ?line stop_node(Node), ?line ok. sst0_loop(0) -> ok; sst0_loop(N) -> erlang:system_flag(multi_scheduling, block), erlang:system_flag(multi_scheduling, unblock), erlang:yield(), sst0_loop(N-1). sst1_loop(0) -> ok; sst1_loop(N) -> erlang:system_flag(multi_scheduling, block), erlang:system_flag(multi_scheduling, unblock), sst1_loop(N-1). sst2_loop(0) -> ok; sst2_loop(N) -> erlang:system_flag(multi_scheduling, block), erlang:system_flag(multi_scheduling, block), erlang:system_flag(multi_scheduling, block), erlang:system_flag(multi_scheduling, unblock), erlang:system_flag(multi_scheduling, unblock), erlang:system_flag(multi_scheduling, unblock), sst2_loop(N-1). sst3_loop(_S, 0) -> ok; sst3_loop(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(S, N-1). %% %% Utils %% mcall(Node, Funs) -> Parent = self(), Refs = lists:map(fun (Fun) -> Ref = make_ref(), spawn_link(Node, fun () -> Res = Fun(), unlink(Parent), Parent ! {Ref, Res} end), Ref end, Funs), lists:map(fun (Ref) -> receive {Ref, Res} -> Res end end, Refs). erl_rel_flag_var() -> "ERL_"++erlang:system_info(otp_release)++"_FLAGS". clear_erl_rel_flags() -> EnvVar = erl_rel_flag_var(), case os:getenv(EnvVar) of false -> false; Value -> os:putenv(EnvVar, ""), Value end. restore_erl_rel_flags(false) -> ok; restore_erl_rel_flags(OldValue) -> os:putenv(erl_rel_flag_var(), OldValue), ok. ok(too_slow, _Config) -> {comment, "Too slow system to do any actual testing..."}; ok(_Res, Config) -> ?config(ok_res, Config). chk_result(too_slow, _LWorkers, _NWorkers, _HWorkers, _MWorkers, _LNShouldWork, _HShouldWork, _MShouldWork) -> ?line ok; chk_result([{low, L, Lmin, _Lmax}, {normal, N, Nmin, _Nmax}, {high, H, Hmin, _Hmax}, {max, M, Mmin, _Mmax}] = Res, LWorkers, NWorkers, HWorkers, MWorkers, LNShouldWork, HShouldWork, MShouldWork) -> ?line ?t:format("~p~n", [Res]), ?line Relax = relax_limits(), case {L, N} of {0, 0} -> ?line false = LNShouldWork; _ -> ?line {LminRatioLim, NminRatioLim, LNRatioLimMin, LNRatioLimMax} = case Relax of false -> {0.5, 0.5, 0.05, 0.25}; true -> {0.05, 0.05, 0.01, 0.4} end, ?line Lavg = L/LWorkers, ?line Navg = N/NWorkers, ?line Ratio = Lavg/Navg, ?line LminRatio = Lmin/Lavg, ?line NminRatio = Nmin/Navg, ?line ?t:format("low min ratio=~p~n" "normal min ratio=~p~n" "low avg=~p~n" "normal avg=~p~n" "low/normal ratio=~p~n", [LminRatio, NminRatio, Lavg, Navg, Ratio]), erlang:display({low_min_ratio, LminRatio}), erlang:display({normal_min_ratio, NminRatio}), erlang:display({low_avg, Lavg}), erlang:display({normal_avg, Navg}), erlang:display({low_normal_ratio, Ratio}), ?line chk_lim(LminRatioLim, LminRatio, 1.0, low_min_ratio), ?line chk_lim(NminRatioLim, NminRatio, 1.0, normal_min_ratio), ?line chk_lim(LNRatioLimMin, Ratio, LNRatioLimMax, low_normal_ratio), ?line true = LNShouldWork, ?line ok end, case H of 0 -> ?line false = HShouldWork; _ -> ?line HminRatioLim = case Relax of false -> 0.5; true -> 0.1 end, ?line Havg = H/HWorkers, ?line HminRatio = Hmin/Havg, erlang:display({high_min_ratio, HminRatio}), ?line chk_lim(HminRatioLim, HminRatio, 1.0, high_min_ratio), ?line true = HShouldWork, ?line ok end, case M of 0 -> ?line false = MShouldWork; _ -> ?line MminRatioLim = case Relax of false -> 0.5; true -> 0.1 end, ?line Mavg = M/MWorkers, ?line MminRatio = Mmin/Mavg, erlang:display({max_min_ratio, MminRatio}), ?line chk_lim(MminRatioLim, MminRatio, 1.0, max_min_ratio), ?line true = MShouldWork, ?line ok end, ?line ok. chk_lim(Min, V, Max, _What) when Min =< V, V =< Max -> ok; chk_lim(_Min, V, _Max, What) -> ?t:fail({bad, What, V}). snd(_Msg, []) -> []; snd(Msg, [P|Ps]) -> P ! Msg, Ps. relax_limits() -> case strange_system_scale() of Scale when Scale > 1 -> ?t:format("Relaxing limits~n", []), true; _ -> false end. strange_system_scale() -> S0 = 1, S1 = case erlang:system_info(schedulers_online) > erlang:system_info(logical_processors) of true -> S0*2; false -> S0 end, S2 = case erlang:system_info(debug_compiled) of true -> S1*10; false -> case erlang:system_info(lock_checking) of true -> S1*2; false -> S1 end end, S3 = case lock_counting() of true -> S2*2; false -> S2 end, S3. lock_counting() -> lock_counting(erlang:system_info(system_version)). lock_counting([]) -> false; lock_counting([$[,$l,$o,$c,$k,$-,$c,$o,$u,$n,$t,$i,$n,$g,$],_]) -> true; lock_counting([_C|Cs]) -> lock_counting(Cs). go_work([], [], [], []) -> []; go_work(L, N, [], []) -> go_work(snd(go_work, L), snd(go_work, N), [], []); go_work(L, N, H, []) -> go_work(L, N, snd(go_work, H), []); go_work(L, N, H, M) -> go_work(L, N, H, snd(go_work, M)). stop_work([], [], [], []) -> []; stop_work([], [], [], M) -> stop_work([], [], [], snd(stop_work, M)); stop_work([], [], H, M) -> stop_work([], [], snd(stop_work, H), M); stop_work(L, N, H, M) -> stop_work(snd(stop_work, L), snd(stop_work, N), H, M). wait_balance(N) when is_integer(N) -> case erlang:system_info(schedulers_active) of 1 -> done; _ -> erts_debug:set_internal_state(available_internal_state,true), Start = erts_debug:get_internal_state(nbalance), End = (Start + N) band ((1 bsl (8*erlang:system_info(wordsize)))-1), wait_balance(Start, End), erts_debug:set_internal_state(available_internal_state,false) end. wait_balance(Start, End) -> X = erts_debug:get_internal_state(nbalance), case End =< X of true -> case Start =< End of true -> done; false -> case X < Start of true -> done; false -> receive after 250 -> ok end, wait_balance(Start, End) end end; false -> receive after 250 -> ok end, wait_balance(Start, End) end. wait_reds(RedsLimit, Timeout) -> Stop = erlang:start_timer(Timeout, self(), stop), statistics(reductions), wait_reds(0, RedsLimit, Stop). wait_reds(Reds, RedsLimit, Stop) when Reds < RedsLimit -> receive {timeout, Stop, stop} -> erlang:display(timeout), erlang:display({reduction_limit, RedsLimit}), erlang:display({reductions, Reds}), done after 10000 -> {_, NewReds} = statistics(reductions), wait_reds(NewReds+Reds, RedsLimit, Stop) end; wait_reds(Reds, RedsLimit, Stop) when is_reference(Stop) -> erlang:cancel_timer(Stop), receive {timeout, Stop, stop} -> ok after 0 -> ok end, wait_reds(Reds, RedsLimit, false); wait_reds(Reds, RedsLimit, _Stop) -> erlang:display({reduction_limit, RedsLimit}), erlang:display({reductions, Reds}), done. do_it(Tracer, Low, Normal, High, Max) -> do_it(Tracer, Low, Normal, High, Max, ?DEFAULT_TEST_REDS_PER_SCHED). do_it(Tracer, Low, Normal, High, Max, RedsPerSchedLimit) -> OldPrio = process_flag(priority, max), go_work(Low, Normal, High, Max), StartWait = now(), %% Give the emulator a chance to balance the load... wait_balance(5), EndWait = now(), BalanceWait = timer:now_diff(EndWait,StartWait) div 1000, erlang:display({balance_wait, BalanceWait}), Timeout = ?DEFAULT_TIMEOUT - ?t:seconds(10) - BalanceWait, Res = case Timeout < ?MIN_SCHEDULER_TEST_TIMEOUT of true -> stop_work(Low, Normal, High, Max), too_slow; false -> set_tracing(true, Tracer, normal, Normal), set_tracing(true, Tracer, low, Low), set_tracing(true, Tracer, high, High), set_tracing(true, Tracer, max, Max), wait_reds(RedsPerSchedLimit * erlang:system_info(schedulers_online), Timeout), set_tracing(false, Tracer, normal, Normal), set_tracing(false, Tracer, low, Low), set_tracing(false, Tracer, high, High), set_tracing(false, Tracer, max, Max), stop_work(Low, Normal, High, Max), get_trace_result(Tracer) end, process_flag(priority, OldPrio), Res. workers_exit([]) -> ok; workers_exit([P|Ps]) when is_pid(P) -> Mon = erlang:monitor(process, P), unlink(P), exit(P, kill), workers_exit(Ps), receive {'DOWN', Mon, process, P, _} -> ok end, ok; workers_exit([[]]) -> ok; workers_exit([Ps|Pss]) -> workers_exit(Ps), workers_exit(Pss). do_work(PartTime) -> lists:reverse(lists:seq(1, 50)), receive stop_work -> receive after infinity -> ok end after 0 -> ok end, case PartTime of true -> receive after 1 -> ok end; false -> ok end, do_work(PartTime). workers(N, _Prio, _PartTime) when N =< 0 -> []; workers(N, Prio, PartTime) -> Parent = self(), W = spawn_opt(fun () -> Parent ! {ready, self()}, receive go_work -> do_work(PartTime) end end, [{priority, Prio}, link]), Ws = workers(N-1, Prio, PartTime), receive {ready, W} -> ok end, [W|Ws]. workers(N, Prio) -> workers(N, Prio, false). part_time_workers(N, Prio) -> workers(N, Prio, true). tracer(Low, Normal, High, Max) -> receive {tracees, Prio, Tracees} -> save_tracees(Prio, Tracees), case Prio of low -> tracer(Tracees++Low, Normal, High, Max); normal -> tracer(Low, Tracees++Normal, High, Max); high -> tracer(Low, Normal, Tracees++High, Max); max -> tracer(Low, Normal, High, Tracees++Max) end; {get_result, Ref, Who} -> Delivered = erlang:trace_delivered(all), receive {trace_delivered, all, Delivered} -> ok end, {Lc, Nc, Hc, Mc} = read_trace(), GetMinMax = fun (Prio, Procs) -> LargeNum = 1 bsl 64, case lists:foldl(fun (P, {Mn, Mx} = MnMx) -> {Prio, C} = get(P), case C < Mn of true -> case C > Mx of true -> {C, C}; false -> {C, Mx} end; false -> case C > Mx of true -> {Mn, C}; false -> MnMx end end end, {LargeNum, 0}, Procs) of {LargeNum, 0} -> {0, 0}; Res -> Res end end, {Lmin, Lmax} = GetMinMax(low, Low), {Nmin, Nmax} = GetMinMax(normal, Normal), {Hmin, Hmax} = GetMinMax(high, High), {Mmin, Mmax} = GetMinMax(max, Max), Who ! {trace_result, Ref, [{low, Lc, Lmin, Lmax}, {normal, Nc, Nmin, Nmax}, {high, Hc, Hmin, Hmax}, {max, Mc, Mmin, Mmax}]} end. read_trace() -> read_trace(0,0,0,0). read_trace(Low, Normal, High, Max) -> receive {trace, Proc, in, _} -> {Prio, Count} = get(Proc), put(Proc, {Prio, Count+1}), case Prio of low -> read_trace(Low+1, Normal, High, Max); normal -> read_trace(Low, Normal+1, High, Max); high -> read_trace(Low, Normal, High+1, Max); max -> read_trace(Low, Normal, High, Max+1) end; {trace, _Proc, out, _} -> read_trace(Low, Normal, High, Max) after 0 -> {Low, Normal, High, Max} end. save_tracees(_Prio, []) -> ok; save_tracees(Prio, [T|Ts]) -> put(T, {Prio, 0}), save_tracees(Prio, Ts). start_tracer() -> Tracer = spawn_link(fun () -> tracer([], [], [], []) end), true = erlang:suspend_process(Tracer), Tracer. get_trace_result(Tracer) -> erlang:resume_process(Tracer), Ref = make_ref(), Tracer ! {get_result, Ref, self()}, receive {trace_result, Ref, Res} -> Res end. set_tracing(_On, _Tracer, _Prio, []) -> ok; set_tracing(true, Tracer, Prio, Pids) -> Tracer ! {tracees, Prio, Pids}, set_tracing(true, Tracer, Pids); set_tracing(false, Tracer, _Prio, Pids) -> set_tracing(false, Tracer, Pids). set_tracing(_On, _Tracer, []) -> ok; set_tracing(On, Tracer, [Pid|Pids]) -> 1 = erlang:trace(Pid, On, [running, {tracer, Tracer}]), set_tracing(On, Tracer, Pids). active_schedulers() -> case erlang:system_info(schedulers_online) of 1 -> 1; N -> case erlang:system_info(multi_scheduling) of blocked -> 1; enabled -> N end end. 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)), ?line ?t:start_node(Name, slave, [{args, "-pa "++Pa++" "++Args}]). stop_node(Node) -> ?t:stop_node(Node). enable_internal_state() -> case catch erts_debug:get_internal_state(available_internal_state) of true -> true; _ -> erts_debug:set_internal_state(available_internal_state, true) end. cmp(X, X) -> ok; cmp(X, Y) -> ?t:format("cmp failed:~n X=~p~n Y=~p~n", [X,Y]), cmp_aux(X, Y). cmp_aux([X0|Y0], [X1|Y1]) -> cmp_aux(X0, X1), cmp_aux(Y0, Y1); cmp_aux(T0, T1) when is_tuple(T0), is_tuple(T1), size(T0) == size(T1) -> cmp_tuple(T0, T1, 1, size(T0)); cmp_aux(X, X) -> ok; cmp_aux(F0, F1) -> ?t:fail({no_match, F0, F1}). cmp_tuple(_T0, _T1, N, Sz) when N > Sz -> ok; cmp_tuple(T0, T1, N, Sz) -> cmp_aux(element(N, T0), element(N, T1)), cmp_tuple(T0, T1, N+1, Sz).