diff --git a/lib/soml/parfait/integer.soml b/lib/soml/parfait/integer.soml
index 44ec1d71..ea010f8a 100644
--- a/lib/soml/parfait/integer.soml
+++ b/lib/soml/parfait/integer.soml
@@ -105,6 +105,7 @@ class Integer < Value
 
   Word to_s()
     Word start = " "
+    start.set_length(0)
     return as_string( start )
   end
 
diff --git a/test/bench/fibo.c b/test/bench/adds.c
similarity index 80%
rename from test/bench/fibo.c
rename to test/bench/adds.c
index 352adfc4..beedd796 100644
--- a/test/bench/fibo.c
+++ b/test/bench/adds.c
@@ -17,13 +17,11 @@ int fibo(int n){
 
 int main(void)
 {
-	int counter = 1000000;
+	int counter = 98304 + 1696;
 	int counter2 = counter;
 	int level = 40;
 	int fib ;
 	while(counter--) {
 		fib = fibo(level);
 	}
-	printf("%i times fib %d \n",counter2 , level);
-
 }
diff --git a/test/bench/calls.c b/test/bench/calls.c
new file mode 100644
index 00000000..08c8f68f
--- /dev/null
+++ b/test/bench/calls.c
@@ -0,0 +1,19 @@
+#include<stdio.h>
+
+int fibo_r(int n)
+{
+   if ( n <  2 )
+      return n;
+   else
+      return ( fibo_r(n-1) + fibo_r(n-2) );
+}
+
+int main(void)
+{
+	int counter = 1000;
+	int counter2 = counter;
+	int fib ;
+	while(counter--) {
+		fib = fibo_r(20);
+	}
+}
diff --git a/test/bench/hello.c b/test/bench/hello.c
index 35a9d49c..494f8431 100644
--- a/test/bench/hello.c
+++ b/test/bench/hello.c
@@ -2,7 +2,7 @@
 
 int main(void)
 {
-	int counter = 1000000;
+	int counter = 98304 + 1696;
 	while(counter--) {
     printf("Hello there\n");
 	}
diff --git a/test/bench/hello0.c b/test/bench/hello0.c
deleted file mode 100644
index 35a9d49c..00000000
--- a/test/bench/hello0.c
+++ /dev/null
@@ -1,9 +0,0 @@
-#include<stdio.h>
-
-int main(void)
-{
-	int counter = 1000000;
-	while(counter--) {
-    printf("Hello there\n");
-	}
-}
diff --git a/test/bench/itos.c b/test/bench/itos.c
new file mode 100644
index 00000000..d3e92173
--- /dev/null
+++ b/test/bench/itos.c
@@ -0,0 +1,11 @@
+#include<stdio.h>
+
+int main(void)
+{
+	char stringa[20] ;
+
+	int counter = 98304 + 1696;
+	while(counter--) {
+    sprintf(stringa, "%i\n" , counter);
+	}
+}
diff --git a/test/bench/null.c b/test/bench/null.c
index 85a94047..22a6016b 100644
--- a/test/bench/null.c
+++ b/test/bench/null.c
@@ -2,5 +2,8 @@
 
 int main(void)
 {
-  return 1;
+int counter = 98304 + 1696;
+  while(counter--) {
+    counter = counter;
+  }
 }
diff --git a/test/bench/puti.c b/test/bench/puti.c
deleted file mode 100644
index f3eea358..00000000
--- a/test/bench/puti.c
+++ /dev/null
@@ -1,9 +0,0 @@
-#include<stdio.h>
-
-int main(void)
-{
-	int counter = 1000000;
-	while(counter--) {
-    printf("%i\n" , counter);
-	}
-}
diff --git a/test/bench/results.md b/test/bench/results.md
new file mode 100644
index 00000000..1b70c29e
--- /dev/null
+++ b/test/bench/results.md
@@ -0,0 +1,28 @@
+# Benchmarks
+
+loop  - program does empty loop of same size as hello
+hello - output hello world (to dev/null) to measure kernel calls (not terminal speed)
+itos  - convert integers from 1 to 100000  to string
+add   - run integer adds by linear fibonacci of 40
+call  - exercise calling by recursive fibonacci of 20
+
+Hello and puti and add run 100_000 iterations per program invocation to remove startup overhead.
+Call only has 10000 iterations, as it much slower
+
+Gcc used to compile c on the machine
+soml produced by ruby (on another machine)
+
+# Results
+
+Results were measured by a ruby script. Mean and variance was measured until variance was low,
+usually under one percent.
+
+The machine was a virtual arm run on a powerbook, performance roughly equivalent to a raspberry pi.
+But results should be seen as relative, not absolute.
+
+
+language  | loop    | hello   | itos   |  add     | call        
+c         | 0.1530  | 0.3422  | 0.871  | 0.3968   | 2.5913  
+c variance| 0.0018  | 0.010   | 0.027  | 0.0013   | 0.0058
+soml      | 0.1130  | 3.5778  | 3.772  | 0.6856   | 4.0325
+variance  | 0.0009  | 0.021   | 0.001  | 0.0014   | 0.0035
diff --git a/test/bench/runner.rb b/test/bench/runner.rb
index da4817d7..5abc2f56 100644
--- a/test/bench/runner.rb
+++ b/test/bench/runner.rb
@@ -16,7 +16,8 @@ class Stats
   end
   def show
     #puts "no    per   var"
-    puts "#{@n}    #{@mean}   #{@variance}"
+
+    puts "#{@n}    #{@mean}   #{@variance / @n}"
   end
 end
 class Runner
@@ -25,12 +26,14 @@ class Runner
     @cmd = ARGV[0]
   end
   def run
-    { once } while true
+    while true
+      once
+    end
   end
 
   def once
     GC.disable
-    took = Benchmark.measure { %x("#{@cmd}")}.real
+    took = Benchmark.measure { %x(#{@cmd} > /dev/null)}.real
     GC.enable
     @stats.add took
     @stats.show
diff --git a/test/soml/helper.rb b/test/soml/helper.rb
index 07ffc612..ac2165ad 100644
--- a/test/soml/helper.rb
+++ b/test/soml/helper.rb
@@ -29,6 +29,8 @@ module RuntimeTests
 
   def check ret = nil
     load_program
+    check_remote ret
+    exit
     interpreter = Register::Interpreter.new
     interpreter.start @machine.init
     count = 0
@@ -59,9 +61,9 @@ module RuntimeTests
     return unless box = connected
     load_program
     file = write_object_file
-    print "\nfile #{file} "
     r_file = file.sub("./" , "salama/")
     box.file_upload file , r_file
+    print "\nfile #{file} "
     box.ld "-N", r_file
     begin    #need to rescue here as rye throws if no return 0
       ret = box.aout           # and we use return to mean something
diff --git a/test/soml/parfait/test_integer.rb b/test/soml/parfait/test_integer.rb
index aac984b5..5c4912fd 100644
--- a/test/soml/parfait/test_integer.rb
+++ b/test/soml/parfait/test_integer.rb
@@ -179,6 +179,15 @@ five.putstring()"
     @stdout = " 21"
     check 21
   end
+  def test_fib20_1000
+    @main = "int count = 1000
+             while_plus( count - 1)
+               20.fibr( )
+               count = count - 1
+             end
+             return count"
+    check 0
+  end
 
   def test_fibw8
     @main = "int fib = 8.fibw( )
@@ -193,9 +202,8 @@ five.putstring()"
     check 6765
   end
 
-  def pest_fib40_1000000
-    @main = "int count = 999424
-             count = count + 576
+  def test_fib40_100000
+    @main = "int count = 100352 - 352
              while_plus( count - 1)
                40.fibw( )
                count = count - 1
@@ -203,4 +211,21 @@ five.putstring()"
              return count"
     check 0
   end
+  def test_itos_100000
+    @main = "int count = 100352 - 352
+             while_plus( count - 1)
+               count.to_s( )
+               count = count - 1
+             end
+             return count"
+    check 0
+  end
+  def test_loop_100000
+    @main = "int count = 100352 - 352
+             while_plus( count - 1)
+               count = count - 1
+             end
+             return count"
+    check 0
+  end
 end
diff --git a/test/soml/parfait/test_word.rb b/test/soml/parfait/test_word.rb
index 4619d016..745dd73f 100644
--- a/test/soml/parfait/test_word.rb
+++ b/test/soml/parfait/test_word.rb
@@ -177,4 +177,17 @@ return w.char_length
 HERE
     check 4
   end
+
+  def test_puts_100000
+    @main = <<HERE
+    int count = 100352 - 352
+    Word hello = "Hello there"
+    while_plus( count - 1)
+      hello.putstring()
+      count = count - 1
+     end
+     return 1
+HERE
+    check 1
+  end
 end