lib/benchmark_driver/output/compare.rb in benchmark_driver-0.16.4 vs lib/benchmark_driver/output/compare.rb in benchmark_driver-0.16.5

@@ -97,11 +97,11 @@
     # Show pretty seconds / clocks too. As it takes long width, it's shown only with a single executable.
     if @job_results.size == 1
       result = @job_results.first
       sec = result.duration
       iter = result.loop_count
-      if File.exist?('/proc/cpuinfo') && (clks = estimate_clock(sec, iter)) < 1_000
+      if File.exist?('/proc/cpuinfo') && (clks = estimate_clock(sec, iter)) && (clks < 1_000)
         $stdout.print(" (#{pretty_sec(sec, iter)}/i, #{clks}clocks/i)")
       else
         $stdout.print(" (#{pretty_sec(sec, iter)}/i)")
       end
     end
@@ -154,10 +154,14 @@
       "#{'%3.2f' % (r * 1_000_000_000).to_f}ns"
     end
   end
 
   def estimate_clock sec, iter
-    hz = File.read('/proc/cpuinfo').scan(/cpu MHz\s+:\s+([\d\.]+)/){|(f)| break hz = Rational(f.to_f) * 1_000_000}
+    hz = nil
+
+    File.read('/proc/cpuinfo').scan(/cpu MHz\s+:\s+([\d\.]+)/){|(f)| break hz = Rational(f.to_f) * 1_000_000}
+    return unless hz
+
     r = Rational(sec, iter)
     Integer(r/(1/hz))
   end
 
   def compare_jobs