From 64b1751194754a20173bbf48cff2035078bc225f Mon Sep 17 00:00:00 2001
From: ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 16 Oct 2012 13:07:44 +0000
Subject: * benchmark/driver.rb: some refactoring.   (1) Remove `average
 differential'.   In this benchmark driver, We should not care about
 `average'.   We use fastest score because this score should not include   any
 disturbances (affections of background process, etc).   If you care about
 timing affect, I recommend `median'   score with more than 5 examinations
 rather than simple   `average' score (`average' score was affected by error
 scores).   (2) Show log file name.   (3) Change default directory from './'
 to driver's directory.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37224 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 benchmark/driver.rb | 19 +++++--------------
 1 file changed, 5 insertions(+), 14 deletions(-)

(limited to 'benchmark')

diff --git a/benchmark/driver.rb b/benchmark/driver.rb
index 2b7c769552..7cd2714ab4 100644
--- a/benchmark/driver.rb
+++ b/benchmark/driver.rb
@@ -113,10 +113,7 @@ class BenchmarkDriver
       output "minimum results in each #{@repeat} measurements."
     end
 
-    difference = "\taverage difference" if @execs.length == 2
-    total_difference = 0
-
-    output "name\t#{@execs.map{|(_, v)| v}.join("\t")}#{difference}"
+    output "name\t#{@execs.map{|(_, v)| v}.join("\t")}"
     @results.each{|v, result|
       rets = []
       s = nil
@@ -137,18 +134,12 @@ class BenchmarkDriver
         rets << sprintf("%.3f", r)
       }
 
-      if difference
-        diff = average(result.last) - average(result.first)
-        total_difference += diff
-        rets << sprintf("%.3f", diff)
-      end
-
       output "#{v}#{s}\t#{rets.join("\t")}"
     }
 
-    if difference and @verbose
-      output '-----------------------------------------------------------'
-      output "average total difference is #{total_difference}"
+    if @opt[:output]
+      output
+      output "Log file: #{@opt[:output]}"
     end
   end
 
@@ -234,7 +225,7 @@ end
 if __FILE__ == $0
   opt = {
     :execs => ['ruby'],
-    :dir => './',
+    :dir => File.dirname(__FILE__),
     :repeat => 1,
     :output => "bmlog-#{Time.now.strftime('%Y%m%d-%H%M%S')}.#{$$}",
   }
-- 
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