+ Use Etc.nprocessors by default in order to maximize cpu usage. (ton…

…ytonyjan) [git-p4: depot-paths = "//src/minitest/dev/": change = 13277]
minitest · Dec 5, 2021 · a320274 · a320274
1 parent 5352c9e
commit a320274
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/lib/minitest.rb b/lib/minitest.rb
@@ -3,6 +3,7 @@
 require "mutex_m"
 require "minitest/parallel"
 require "stringio"
+require "etc"
 
 ##
 # :include: README.rdoc
@@ -23,7 +24,7 @@ module Minitest
   mc.send :attr_accessor, :parallel_executor
 
   warn "DEPRECATED: use MT_CPU instead of N for parallel test runs" if ENV["N"]
-  n_threads = (ENV["MT_CPU"] || ENV["N"] || 2).to_i
+  n_threads = (ENV["MT_CPU"] || ENV["N"] || Etc.nprocessors).to_i
   self.parallel_executor = Parallel::Executor.new n_threads
 
   ##