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Diffstat (limited to 'erts/emulator/test/old_scheduler_SUITE.erl')
| -rw-r--r-- | erts/emulator/test/old_scheduler_SUITE.erl | 384 |
1 files changed, 0 insertions, 384 deletions
diff --git a/erts/emulator/test/old_scheduler_SUITE.erl b/erts/emulator/test/old_scheduler_SUITE.erl deleted file mode 100644 index ffe7d40139..0000000000 --- a/erts/emulator/test/old_scheduler_SUITE.erl +++ /dev/null @@ -1,384 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2004-2016. All Rights Reserved. -%% -%% 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 -%% -%% 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% -%% - --module(old_scheduler_SUITE). - --include_lib("common_test/include/ct.hrl"). - --export([all/0, suite/0, - init_per_testcase/2, end_per_testcase/2]). --export([equal/1, many_low/1, few_low/1, max/1, high/1]). - -suite() -> - [{ct_hooks,[ts_install_cth]}, - {timetrap, {minutes, 11}}]. - -all() -> - case catch erlang:system_info(modified_timing_level) of - Level when is_integer(Level) -> - {skipped, - "Modified timing (level " ++ - integer_to_list(Level) ++ - ") is enabled. Testcases gets messed " - "up by modfied timing."}; - _ -> [equal, many_low, few_low, max, high] - end. - - -%%----------------------------------------------------------------------------------- -%% TEST SUITE DESCRIPTION -%% -%% The test case function spawns two controlling processes: Starter and Receiver. -%% Starter spawns a number of prio A and a number of prio B test processes. Each -%% test process loops for a number of times, sends a report to the Receiver, then -%% loops again. For each report, the Receiver increases a counter that corresponds -%% to the priority of the sender. After a certain amount of time, the Receiver -%% sends the collected data to the main test process and waits for the test case -%% to terminate. From this data, it's possible to calculate the average run time -%% relationship between the prio A and B test processes. -%% -%% Note that in order to be able to run tests with high or max prio test processes, -%% the main test process and the Receiver needs to run at max prio, or they will -%% be starved by the test processes. The controlling processes must not wait for -%% messages from a normal (or low) prio process while max or high prio test processes -%% are running (which happens e.g. if an io function is called). -%%----------------------------------------------------------------------------------- - -init_per_testcase(_Case, Config) -> - %% main test process needs max prio - Prio = process_flag(priority, max), - MS = erlang:system_flag(multi_scheduling, block), - [{prio,Prio},{multi_scheduling, MS}|Config]. - -end_per_testcase(_Case, Config) -> - erlang:system_flag(multi_scheduling, unblock), - Prio=proplists:get_value(prio, Config), - process_flag(priority, Prio), - ok. - -ok(Config) when is_list(Config) -> - case proplists:get_value(multi_scheduling, Config) of - blocked -> - {comment, - "Multi-scheduling blocked during test. This testcase was not " - "written to work with multiple schedulers."}; - _ -> ok - end. - -%% Run equal number of low and normal prio processes. - -equal(Config) when is_list(Config) -> - Self = self(), - - %% specify number of test processes to run - Normal = {normal,500}, - Low = {low,500}, - - %% specify time of test (in seconds) - Time = 30, - - %% start controllers - Receiver = - spawn(fun() -> receiver(erlang:monotonic_time(), Time, Self, Normal, Low) end), - Starter = - spawn(fun() -> starter(Normal, Low, Receiver) end), - - %% receive test data from Receiver - {NRs,NAvg,LRs,LAvg,Ratio} = - receive - {Receiver,Res} -> Res - end, - - %% stop controllers and test processes - exit(Starter, kill), - exit(Receiver, kill), - - io:format("Reports: ~w normal (~w/proc), ~w low (~w/proc). Ratio: ~w~n", - [NRs,NAvg,LRs,LAvg,Ratio]), - - %% runtime ratio between normal and low should be ~8 - if Ratio < 7.5 ; Ratio > 8.5 -> - ct:fail({bad_ratio,Ratio}); - true -> - ok(Config) - end. - - -%% Run many low and few normal prio processes. - -many_low(Config) when is_list(Config) -> - Self = self(), - Normal = {normal,1}, - Low = {low,1000}, - - %% specify time of test (in seconds) - Time = 30, - - Receiver = - spawn(fun() -> receiver(erlang:monotonic_time(), Time, Self, Normal, Low) end), - Starter = - spawn(fun() -> starter(Normal, Low, Receiver) end), - {NRs,NAvg,LRs,LAvg,Ratio} = - receive - {Receiver,Res} -> Res - end, - exit(Starter, kill), - exit(Receiver, kill), - io:format("Reports: ~w normal (~w/proc), ~w low (~w/proc). Ratio: ~w~n", - [NRs,NAvg,LRs,LAvg,Ratio]), - if Ratio < 7.5 ; Ratio > 8.5 -> - ct:fail({bad_ratio,Ratio}); - true -> - ok(Config) - end. - - -%% Run few low and many normal prio processes. - -few_low(Config) when is_list(Config) -> - Self = self(), - Normal = {normal,1000}, - Low = {low,1}, - - %% specify time of test (in seconds) - Time = 30, - - Receiver = - spawn(fun() -> receiver(erlang:monotonic_time(), Time, Self, Normal, Low) end), - Starter = - spawn(fun() -> starter(Normal, Low, Receiver) end), - {NRs,NAvg,LRs,LAvg,Ratio} = - receive - {Receiver,Res} -> Res - end, - exit(Starter, kill), - exit(Receiver, kill), - io:format("Reports: ~w normal (~w/proc), ~w low (~w/proc). Ratio: ~w~n", - [NRs,NAvg,LRs,LAvg,Ratio]), - if Ratio < 7.0 ; Ratio > 8.5 -> - ct:fail({bad_ratio,Ratio}); - true -> - ok(Config) - end. - - -%% Run max prio processes and verify they get at least as much -%% runtime as high, normal and low. - -max(Config) when is_list(Config) -> - max = process_flag(priority, max), % should already be max (init_per_tc) - Self = self(), - Max = {max,2}, - High = {high,2}, - Normal = {normal,100}, - Low = {low,100}, - - %% specify time of test (in seconds) - Time = 30, - - Receiver1 = - spawn(fun() -> receiver(erlang:monotonic_time(), Time, Self, Max, High) end), - Starter1 = - spawn(fun() -> starter(Max, High, Receiver1) end), - {M1Rs,M1Avg,HRs,HAvg,Ratio1} = - receive - {Receiver1,Res1} -> Res1 - end, - exit(Starter1, kill), - exit(Receiver1, kill), - io:format("Reports: ~w max (~w/proc), ~w high (~w/proc). Ratio: ~w~n", - [M1Rs,M1Avg,HRs,HAvg,Ratio1]), - if Ratio1 < 1.0 -> - ct:fail({bad_ratio,Ratio1}); - true -> - ok(Config) - end, - - Receiver2 = - spawn(fun() -> receiver(erlang:monotonic_time(), Time, Self, Max, Normal) end), - Starter2 = - spawn(fun() -> starter(Max, Normal, Receiver2) end), - {M2Rs,M2Avg,NRs,NAvg,Ratio2} = - receive - {Receiver2,Res2} -> Res2 - end, - exit(Starter2, kill), - exit(Receiver2, kill), - io:format("Reports: ~w max (~w/proc), ~w normal (~w/proc). Ratio: ~w~n", - [M2Rs,M2Avg,NRs,NAvg,Ratio2]), - if Ratio2 < 1.0 -> - ct:fail({bad_ratio,Ratio2}); - true -> - ok - end, - - Receiver3 = - spawn(fun() -> receiver(erlang:monotonic_time(), Time, Self, Max, Low) end), - Starter3 = - spawn(fun() -> starter(Max, Low, Receiver3) end), - {M3Rs,M3Avg,LRs,LAvg,Ratio3} = - receive - {Receiver3,Res3} -> Res3 - end, - exit(Starter3, kill), - exit(Receiver3, kill), - io:format("Reports: ~w max (~w/proc), ~w low (~w/proc). Ratio: ~w~n", - [M3Rs,M3Avg,LRs,LAvg,Ratio3]), - if Ratio3 < 1.0 -> - ct:fail({bad_ratio,Ratio3}); - true -> - ok(Config) - end. - - -%% Run high prio processes and verify they get at least as much -%% runtime as normal and low. - -high(Config) when is_list(Config) -> - max = process_flag(priority, max), % should already be max (init_per_tc) - Self = self(), - High = {high,2}, - Normal = {normal,100}, - Low = {low,100}, - - %% specify time of test (in seconds) - Time = 30, - - Receiver1 = - spawn(fun() -> receiver(erlang:monotonic_time(), Time, Self, High, Normal) end), - Starter1 = - spawn(fun() -> starter(High, Normal, Receiver1) end), - {H1Rs,H1Avg,NRs,NAvg,Ratio1} = - receive - {Receiver1,Res1} -> Res1 - end, - exit(Starter1, kill), - exit(Receiver1, kill), - io:format("Reports: ~w high (~w/proc), ~w normal (~w/proc). Ratio: ~w~n", - [H1Rs,H1Avg,NRs,NAvg,Ratio1]), - if Ratio1 < 1.0 -> - ct:fail({bad_ratio,Ratio1}); - true -> - ok - end, - - Receiver2 = - spawn(fun() -> receiver(erlang:monotonic_time(), Time, Self, High, Low) end), - Starter2 = - spawn(fun() -> starter(High, Low, Receiver2) end), - {H2Rs,H2Avg,LRs,LAvg,Ratio2} = - receive - {Receiver2,Res2} -> Res2 - end, - exit(Starter2, kill), - exit(Receiver2, kill), - io:format("Reports: ~w high (~w/proc), ~w low (~w/proc). Ratio: ~w~n", - [H2Rs,H2Avg,LRs,LAvg,Ratio2]), - if Ratio2 < 1.0 -> - ct:fail({bad_ratio,Ratio2}); - true -> - ok(Config) - end. - - -%%----------------------------------------------------------------------------------- -%% Controller processes and help functions -%%----------------------------------------------------------------------------------- - -receiver(T0, TimeSec, Main, {P1,P1N}, {P2,P2N}) -> - %% prio should be max so that mailbox doesn't overflow - process_flag(priority, max), - receiver(T0, TimeSec*1000, Main, P1,P1N,0, P2,P2N,0, 100000). - -%% uncomment lines below to get life sign (debug) -receiver(T0, Time, Main, P1,P1N,P1Rs, P2,P2N,P2Rs, 0) -> - % T = erlang:convert_time_unit(erlang:monotonic_time() - T0, native, millisecond), - % erlang:display({round(T/1000),P1Rs,P2Rs}), - receiver(T0, Time, Main, P1,P1N,P1Rs, P2,P2N,P2Rs, 100000); - -receiver(T0, Time, Main, P1,P1N,P1Rs, P2,P2N,P2Rs, C) -> - Remain = Time - erlang:convert_time_unit(erlang:monotonic_time() - T0, - native, millisecond), % test time remaining - Remain1 = if Remain < 0 -> - 0; - true -> - Remain - end, - {P1Rs1,P2Rs1} = - receive - {_Pid,P1} -> % report from a P1 process - {P1Rs+1,P2Rs}; - {_Pid,P2} -> % report from a P2 process - {P1Rs,P2Rs+1} - after Remain1 -> - {P1Rs,P2Rs} - end, - if Remain > 0 -> % keep going - receiver(T0, Time, Main, P1,P1N,P1Rs1, P2,P2N,P2Rs1, C-1); - true -> % finish - %% calculate results and send to main test process - P1Avg = P1Rs1/P1N, - P2Avg = P2Rs1/P2N, - Ratio = if P2Avg < 1.0 -> P1Avg; - true -> P1Avg/P2Avg - end, - Main ! {self(),{P1Rs1,round(P1Avg),P2Rs1,round(P2Avg),Ratio}}, - flush_loop() - end. - -starter({P1,P1N}, {P2,P2N}, Receiver) -> - %% start N1 processes with prio P1 - start_p(P1, P1N, Receiver), - %% start N2 processes with prio P2 - start_p(P2, P2N, Receiver), - erlang:display({started,P1N+P2N}), - flush_loop(). - -start_p(_, 0, _) -> - ok; -start_p(Prio, N, Receiver) -> - spawn_link(fun() -> p(Prio, Receiver) end), - start_p(Prio, N-1, Receiver). - -p(Prio, Receiver) -> - %% set process priority - process_flag(priority, Prio), - p_loop(0, Prio, Receiver). - -p_loop(100, Prio, Receiver) -> - receive after 0 -> ok end, - %% if Receiver gone, we're done - case is_process_alive(Receiver) of - false -> exit(bye); - true -> ok - end, - %% send report - Receiver ! {self(),Prio}, - p_loop(0, Prio, Receiver); - -p_loop(N, Prio, Receiver) -> - p_loop(N+1, Prio, Receiver). - - -flush_loop() -> - receive _ -> - ok - end, - flush_loop(). |