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
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57237 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57237 b2dd03c8-39d4-4d8f-98ff-823fe69b080e