From: "Iñaki Baz Castillo" Date: 2012-05-15T04:41:54+09:00 Subject: Re: [C ext] Why so many methods rb_hash_xxxxx are not public? 2012/5/14 Ryan Davis : > rb_funcall. I highly doubt that calling rb_hash_clear is your bottleneck. Right, but my problem is the GVL as reported here: http://bugs.ruby-lang.org/issues/6433 Thanks. -- Iñaki Baz Castillo