* benchmark/bm_io_select.rb, benchmark/bm_io_select2.rb: New.

based on a patch from Eric Wong at [Feature #4531]



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31390 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Sat Apr 30 16:13:17 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* benchmark/bm_io_select.rb, benchmark/bm_io_select2.rb: New.
+	  based on a patch from Eric Wong at [Feature #4531]
+
 Sat Apr 30 03:25:53 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
 	* test/io/wait/test_io_wait.rb: New. for testing ext/io/wait.

benchmark/bm_io_select.rb

@@ -0,0 +1,9 @@
+# IO.select performance
+
+w = [ IO.pipe[1] ];
+
+nr = 1000000
+nr.times {
+  IO.select nil, w
+}
+

benchmark/bm_io_select2.rb

@@ -0,0 +1,18 @@
+# IO.select performance. worst case
+
+ios = []
+nr = 1000000
+max = Process.getrlimit(Process::RLIMIT_NOFILE)[0]
+puts "max fd: #{max} (results not apparent with <= 1024 max fd)"
+
+((max / 2) - 2).times do
+  ios.concat IO.pipe
+end
+
+last = [ ios[-1] ]
+puts "last IO: #{last[0].inspect}"
+
+nr.times do
+  IO.select nil, last
+end
+