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Diffstat (limited to 'erts/emulator/test/scheduler_SUITE.erl')
-rw-r--r--erts/emulator/test/scheduler_SUITE.erl67
1 files changed, 48 insertions, 19 deletions
diff --git a/erts/emulator/test/scheduler_SUITE.erl b/erts/emulator/test/scheduler_SUITE.erl
index f18d79d770..a95de609aa 100644
--- a/erts/emulator/test/scheduler_SUITE.erl
+++ b/erts/emulator/test/scheduler_SUITE.erl
@@ -793,13 +793,13 @@ update_cpu_info(Config) when is_list(Config) ->
io:format("START - Affinity mask: ~p - Schedulers online: ~p - Scheduler bindings: ~p~n",
[OldAff, OldOnline, erlang:system_info(scheduler_bindings)]),
case {erlang:system_info(logical_processors_available), OldAff} of
- {Avail, _} when Avail == unknown; OldAff == unknown ->
+ {Avail, _} when Avail == unknown; OldAff == unknown; OldAff == 1 ->
%% Nothing much to test; just a smoke test
case erlang:system_info(update_cpu_info) of
unchanged -> ok;
changed -> ok
end;
- _ ->
+ {Avail, _} ->
try
adjust_schedulers_online(),
case erlang:system_info(schedulers_online) of
@@ -810,7 +810,7 @@ update_cpu_info(Config) when is_list(Config) ->
%% unset least significant bit
Aff = (OldAff band (OldAff - 1)),
set_affinity_mask(Aff),
- Onln1 = Onln0 - 1,
+ Onln1 = Avail - 1,
case adjust_schedulers_online() of
{Onln0, Onln1} ->
Onln1 = erlang:system_info(schedulers_online),
@@ -1072,20 +1072,27 @@ scheduler_threads(Config) when is_list(Config) ->
{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.
+ case {erlang:system_info(logical_processors),
+ erlang:system_info(logical_processors_available)} of
+ {LProc, LProcAvail} when is_integer(LProc), is_integer(LProcAvail) ->
+ %% Test resetting the scheduler counts
+ ResetCmd = "+S "++FourSched++":"++FourSchedOnln++" +S 0:0",
+ {LProc, LProcAvail, _} = get_sstate(Config, ResetCmd),
+ %% Test negative +S settings, but only for SMP-enabled emulators
+ case {SmpSupport, LProc > 1, LProcAvail > 1} of
+ {true, true, true} ->
+ SchedMinus1 = LProc-1,
+ SchedOnlnMinus1 = LProcAvail-1,
+ {SchedMinus1, SchedOnlnMinus1, _} = get_sstate(Config, "+S -1"),
+ {LProc, SchedOnlnMinus1, _} = get_sstate(Config, "+S :-1"),
+ {SchedMinus1, SchedOnlnMinus1, _} = get_sstate(Config, "+S -1:-1"),
+ ok;
+ _ ->
+ {comment, "Skipped reduced amount of schedulers test due to too few logical processors"}
+ end;
+ _ -> %% Skipped when missing info about logical processors...
+ {comment, "Skipped reset amount of schedulers test, and reduced amount of schedulers test due to too unknown amount of logical processors"}
+ end.
dirty_scheduler_threads(Config) when is_list(Config) ->
SmpSupport = erlang:system_info(smp_support),
@@ -1312,11 +1319,33 @@ scheduler_suspend_test(Config, Schedulers) ->
true ->
ok
end,
- erlang:system_info(schedulers_state)
+ until(fun () ->
+ {_A, B, C} = erlang:system_info(
+ schedulers_state),
+ B == C
+ end,
+ erlang:monotonic_time()
+ + erlang:convert_time_unit(1,
+ seconds,
+ native)),
+ erlang:system_info(schedulers_state)
end]),
stop_node(Node),
ok.
-
+
+until(Pred, MaxTime) ->
+ case Pred() of
+ true ->
+ true;
+ false ->
+ case erlang:monotonic_time() > MaxTime of
+ true ->
+ false;
+ false ->
+ receive after 100 -> ok end,
+ until(Pred, MaxTime)
+ end
+ end.
sst0_loop(0) ->
ok;