Fix timing on I/O benchmark

benchmark/function_call/bench.js

@@ -1,12 +1,14 @@
 var binding = require('./build/default/binding');
 
+c = 0 
+
 function js() {
-  return (new Date()).getTime();
+  return c++; //(new Date()).getTime();
 }
 
 var cxx = binding.hello;
 
-var i, N = 10000000;
+var i, N = 100000000;
 
 console.log(js());
 console.log(cxx());

benchmark/function_call/binding.cc

@@ -4,10 +4,12 @@
 
 using namespace v8;
 
+static int c = 0;
+
 static Handle<Value> Hello(const Arguments& args) {
   HandleScope scope;
-  time_t tv = time(NULL);
+  //time_t tv = time(NULL);
-  return scope.Close(Integer::New(tv));
+  return scope.Close(Integer::New(c++));
 }
 
 extern "C" void init (Handle<Object> target) {

benchmark/io.c

@@ -5,13 +5,15 @@
 #include <unistd.h>
 #include <string.h>
 #include <fcntl.h>
-#include <time.h>
+#include <sys/time.h>
+#include <assert.h>
 #include <stdlib.h>
 #include <stdio.h>
  
 int tsize = 1000 * 1048576;
 const char *path = "/tmp/wt.dat";
 
+int c = 0;
 
 char* bufit(size_t l)
 {
@@ -24,7 +26,7 @@ void writetest(int size, size_t bsize)
 {
   int i;
   char *buf = bufit(bsize);
-  clock_t start, end;
+  struct timeval start, end;
   double elapsed;
   double mbps;
 
@@ -34,9 +36,10 @@ void writetest(int size, size_t bsize)
     exit(254);
   }
 
-  start = clock();
+  assert(0 ==  gettimeofday(&start, NULL));
   for (i = 0; i < size; i += bsize) {
     int rv = write(fd, buf, bsize);
+    if (c++ % 2000 == 0) fprintf(stderr, ".");
     if (rv < 0) {
       perror("write failed");
       exit(254);
@@ -48,10 +51,10 @@ void writetest(int size, size_t bsize)
   fsync(fd);
 #endif
   close(fd);
-  end = clock();
+  assert(0 == gettimeofday(&end, NULL));
-  elapsed = ((double) (end - start)) / CLOCKS_PER_SEC;
+  elapsed = (end.tv_sec - start.tv_sec) + ((double)(end.tv_usec - start.tv_usec))/100000.;
   mbps = ((tsize/elapsed)) / 1048576;
-  fprintf(stderr, "Wrote %d bytes in %03fs using %d byte buffers: %03fmB/s\n", size, elapsed, bsize, mbps);
+  fprintf(stderr, "\nWrote %d bytes in %03fs using %ld byte buffers: %03fmB/s\n", size, elapsed, bsize, mbps);
 
   free(buf);
 }
@@ -60,7 +63,7 @@ void readtest(int size, size_t bsize)
 {
   int i;
   char *buf = bufit(bsize);
-  clock_t start, end;
+  struct timeval start, end;
   double elapsed;
   double mbps;
 
@@ -70,7 +73,7 @@ void readtest(int size, size_t bsize)
     exit(254);
   }
 
-  start = clock();
+  assert(0 == gettimeofday(&start, NULL));
   for (i = 0; i < size; i += bsize) {
     int rv = read(fd, buf, bsize);
     if (rv < 0) {
@@ -79,10 +82,10 @@ void readtest(int size, size_t bsize)
     }
   }
   close(fd);
-  end = clock();
+  assert(0 == gettimeofday(&end, NULL));
-  elapsed = ((double) (end - start)) / CLOCKS_PER_SEC;
+  elapsed = (end.tv_sec - start.tv_sec) + ((double)(end.tv_usec - start.tv_usec))/100000.;
   mbps = ((tsize/elapsed)) / 1048576;
-  fprintf(stderr, "Read %d bytes in %03fs using %d byte buffers: %03fmB/s\n", size, elapsed, bsize, mbps);
+  fprintf(stderr, "Read %d bytes in %03fs using %ld byte buffers: %03fmB/s\n", size, elapsed, bsize, mbps);
 
   free(buf);
 }

benchmark/io.js

@@ -1,4 +1,5 @@
 var fs = require('fs');
+var sys = require('sys');
 var Buffer = require('buffer').Buffer;
 
 var path = "/tmp/wt.dat";
@@ -21,6 +22,8 @@ function once(emitter, name, cb) {
   emitter.addListener(name, incb);
 }
 
+c = 0
+
 function writetest(size, bsize) {
   var s = fs.createWriteStream(path, {'flags': 'w', 'mode': 0644});
   var remaining = size;
@@ -40,6 +43,7 @@ function writetest(size, bsize) {
 
   s.on('drain', function () {
     dowrite();
+    if (c++ % 2000 == 0) sys.print(".");
   });
 
   dowrite();