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-rw-r--r--erts/emulator/test/scheduler_SUITE.erl35
1 files changed, 21 insertions, 14 deletions
diff --git a/erts/emulator/test/scheduler_SUITE.erl b/erts/emulator/test/scheduler_SUITE.erl
index 936c171214..7f239f73e7 100644
--- a/erts/emulator/test/scheduler_SUITE.erl
+++ b/erts/emulator/test/scheduler_SUITE.erl
@@ -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),