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* 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
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1 parent b48537c commit 568c934373ce149ac10afcc62d41e5f44eff56ac @kosaki kosaki committed Apr 30, 2011
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  1. +5 −0 ChangeLog
  2. +9 −0 benchmark/bm_io_select.rb
  3. +18 −0 benchmark/bm_io_select2.rb
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@@ -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.
@@ -0,0 +1,9 @@
+# IO.select performance
+
+w = [ IO.pipe[1] ];
+
+nr = 1000000
+nr.times {
+ IO.select nil, w
+}
+
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@@ -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
+

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