[ruby-cvs:64403] normal:r57237 (trunk): add benchmark for IO.copy_stream IO#write case

[normal at ruby-lang.org]

normal	2016-12-31 09:41:14 +0900 (Sat, 31 Dec 2016)

  New Revision: 57237

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=57237

  Log:
    add benchmark for IO.copy_stream IO#write case
    
    I will attempt to reduce garbage in proposed fix
    for https://bugs.ruby-lang.org/issues/13085

  Added files:
    trunk/benchmark/bm_io_copy_stream_write.rb