Print comparable results

primes.cpp

@@ -61,11 +61,18 @@ void get_primes7(int n, vector<int> &res) {
 }
 
 int main() {
-	for (int i = 0; i < 30; i++) {
+	std::time_t startTime = std::time(NULL);
+	char *periodTimeStr = std::getenv("RUN_TIME");
+	std::time_t periodTime = (std::time_t)(periodTimeStr ? atoi(periodTimeStr) : 3);
+	int iterations = 0;
+	while ((std::time(NULL) - startTime) < periodTime || iterations < 3) {
 		vector<int> res;
 		get_primes7(10000000, res);
 		printf("Found %d prime numbers.\n", (int)res.size());
+		iterations++;
 	}
-
+	double time = (std::time(NULL) - startTime);
+	printf("C++: %d iterations in %.02f seconds = %.02f seconds per 30 iterations\n",
+		iterations, time, time/iterations*30);
 	return 0;
 }

primes.java

@@ -44,13 +44,24 @@ class PrimeNumbersGenerator {
 class PrimeNumbersBenchmarkApp {
 	public static void main(String[] args) {
 		long startTime = System.currentTimeMillis();
-		long periodTime = Long.parseLong(System.getenv("RUN_TIME"), 10) * 1000;
+		String periodTimeStr = System.getenv("RUN_TIME");
+		if (periodTimeStr == null)
+			periodTimeStr = "5";
+		long periodTime = Long.parseLong(periodTimeStr, 10) * 1000;
 
 		ArrayList<Integer> res;
 
-		while ((System.currentTimeMillis() - startTime) < periodTime) {
+		int iterations = 0;
+		while ((System.currentTimeMillis() - startTime) < periodTime || iterations < 3) {
 			res = (new PrimeNumbersGenerator()).get_primes7(10000000);
 			System.out.format("Found %d prime numbers.\n", res.size());
+			iterations++;
 		}
+		long time = (System.currentTimeMillis() - startTime);
+		double per30 = time / 1000.0 / iterations * 30;
+		System.out.println(
+			"Java: "+iterations+" iterations in "+(Math.round(time/10.0)/100.0)+
+			" seconds = "+(Math.round(per30*100)/100.0)+" seconds per 30 iterations"
+		);
 	}
 }

primes.js

@@ -39,9 +39,13 @@ function get_primes7(n) {
 }
 
 var startTime = Date.now();
-var periodTime = parseInt(process.env.RUN_TIME, 10) * 1000
-
-for (var i = 0; i < 30; i++) {
+var periodTime = parseInt(process.env.RUN_TIME || '5', 10) * 1000;
+var iterations = 0;
+while ((Date.now() - startTime) < periodTime || iterations < 3) {
 	var res = get_primes7(10000000);
 	console.log("Found " + res.length + " prime numbers.");
+	iterations++;
 }
+var time = Date.now() - startTime;
+var per30 = time / 1000 / iterations * 30;
+console.log(iterations + " iterations in "+(Math.round(time/10)/100)+" seconds = "+(Math.round(per30*100)/100)+" seconds per 30 iterations");

primes.lua

@@ -36,9 +36,6 @@ function get_primes7(n)
 	return res
 end
 
-startTime = os.time(os.date("!*t"))
-periodTime = os.getenv('RUN_TIME')
-
 for i = 1, 30 do
 	local res = get_primes7(10000000)
 	print("Found " .. #res .. " prime numbers.")

primes.php

@@ -32,11 +32,19 @@ function get_primes7($n) {
 }
 
 $startTime = time();
-$periodTime = getenv('RUN_TIME');
+$periodTime = getenv('RUN_TIME') ?: 5;
 
 $res = array();
 
-for ($i = 0; $i < 30; $i++) {
+$iterations = 0;
+$start = microtime(true);
+while ((microtime(true) - $start) < $periodTime || $iterations < 3) {
 	$res = get_primes7(10000000);
 	print "Found ".count($res)." prime numbers.\n";
+	$iterations++;
 }
+$time = microtime(true) - $start;
+printf(
+	"PHP: %d iterations in %.02f seconds = %.02f seconds per 30 iterations\n",
+	$iterations, $time, $time/$iterations*30
+);

primes.py

@@ -1,6 +1,7 @@
 import os
 import sys
 import time
+import platform
 
 def get_primes7(n):
 	"""
@@ -32,6 +33,17 @@ def get_primes7(n):
 		m = 2 * i + 3
 	return [2] + [x for x in s if x]
 
-for i in range(0, 30):
+start_time = time.time()
+period_time = int(os.environ.get('RUN_TIME', '5'))
+iterations = 0
+
+while (time.time() - start_time) < period_time or iterations < 3:
 	res = get_primes7(10000000)
 	print("Found {} prime numbers.".format(len(res)))
+	iterations = iterations + 1
+
+result_time = time.time() - start_time
+
+print("%s %d.%d.%d: %d iterations in %.02f sec = %.02f sec per 30 iterations" % (
+	platform.python_implementation(), sys.version_info.major, sys.version_info.minor, sys.version_info.micro,
+	iterations, result_time, result_time/iterations*30))

primes.rs

@@ -43,19 +43,25 @@ fn get_primes7(count: u32) -> Vec<u32> {
 }
 
 fn main() {
-//    let run_time_secs = match env::var("RUN_TIME") {
-//        Ok(v) => match v.parse::<u32>() {
-//            Ok(i) => i,
-//            Err(err) => panic!("RUN_TIME environment variable error: {}", err),
-//        },
-//        Err(err) => panic!("RUN_TIME environment variable error: {}", err),
-//    };
+    let run_time_secs = match env::var("RUN_TIME") {
+        Ok(v) => match v.parse::<u32>() {
+            Ok(i) => i,
+            Err(err) => panic!("RUN_TIME environment variable error: {}", err),
+        },
+        Err(_err) => 5,
+    };
 
-//    let run_time = Duration::new(run_time_secs as u64, 0);
-//    let start = Instant::now();
+    let run_time = Duration::new(run_time_secs as u64, 0);
+    let start = Instant::now();
 
-    for x in 0..29 {
+    let mut iterations = 3;
+    while start.elapsed() < run_time || iterations < 3 {
         let primes = get_primes7(PRIMES_COUNT);
         println!("Found {} prime numbers.", primes.len());
+        iterations += 1;
     }
+    let dur = start.elapsed();
+    let result_time = dur.as_secs() as f64 + (dur.subsec_millis() as f64) / 1000.0;
+    println!("Rust: {} iterations in {:.2} sec = {:.2} sec per 30 iterations",
+        iterations, result_time, result_time / (iterations as f64) * 30.0);
 }