[ruby-cvs:73589] normal:r66488 (trunk): test/ruby/test_thread.rb: reduce thread count to avoid SIGKILL

[normal at ruby-lang.org]

normal	2018-12-22 08:32:36 +0900 (Sat, 22 Dec 2018)

  New Revision: 66488

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=66488

  Log:
    test/ruby/test_thread.rb: reduce thread count to avoid SIGKILL
    
    Perhaps this error report is down to resource limits on a VM:
    
    http://rubyci.s3.amazonaws.com/centos7/ruby-trunk/log/20181221T230003Z.fail.html.gz
    
    But rb_mutex_t.fork_gen is still redundant, I think.

  Modified files:
    trunk/test/ruby/test_thread.rb