在MongoDB下使用JS和Python的性能比较

{
"_id" : ObjectId("5298a5a03b3f4220588fe57c"),
"created_on" : ISODate("2012-04-22T01:09:53Z"),
"value" : 0.1647851116706831
}

var minDate = new Date(2012, 0, 1, 0, 0, 0, 0);
var maxDate = new Date(2013, 0, 1, 0, 0, 0, 0);
var delta = maxDate.getTime() - minDate.getTime();
 
var job_id = arg2;
 
var documentNumber = arg1;
var batchNumber = 5 * 1000;
 
var job_name = 'Job#' + job_id
var start = new Date();
 
var batchDocuments = new Array();
var index = 0;
 
while(index < documentNumber) {
    var date = new Date(minDate.getTime() + Math.random() * delta);
    var value = Math.random();
    var document = {        
        created_on : date,
        value : value
    };
    batchDocuments[index % batchNumber] = document;
    if((index + 1) % batchNumber == 0) {
        db.randomData.insert(batchDocuments);
    }
    index++;
    if(index % 100000 == 0) {   
        print(job_name + ' inserted ' + index + ' documents.');
    }
}
print(job_name + ' inserted ' + documentNumber + ' in ' + (new Date() - start)/1000.0 + 's');

import sys
import pymongo
import time
import subprocess
import multiprocessing
 
from datetime import datetime
 
cpu_count = multiprocessing.cpu_count()
 
# obtain a mongo connection
connection = pymongo.Connection('mongodb://localhost', safe=True)
 
# obtain a handle to the random database
db = connection.random
collection = db.randomData
 
total_documents_count = 50 * 1000 * 1000;
inserted_documents_count = 0
sleep_seconds = 1
sleep_count = 0
 
for i in range(cpu_count):
    documents_number = str(total_documents_count/cpu_count)
    print documents_number
    subprocess.Popen(['python', '../create_random.py', documents_number, str(i)])
 
start = datetime.now();
 
while (inserted_documents_count < total_documents_count) is True:
    inserted_documents_count = collection.count()
    if (sleep_count > 0 and sleep_count % 60 == 0):  
        print 'Inserted ', inserted_documents_count, ' documents.'     
    if (inserted_documents_count < total_documents_count):
        sleep_count += 1
        time.sleep(sleep_seconds)   
 
print 'Inserting ', total_documents_count, ' took ', (datetime.now() - start).total_seconds(), 's'  

for i in range(cpu_count):
    documents_number = str(total_documents_count/cpu_count)
    script_name = 'create_random_' + str(i + 1) + '.bat'
    script_file = open(script_name, 'w')
    script_file.write('mongo random --eval "var arg1=' + documents_number +';arg2=' + str(i + 1) +'" ../create_random.js');
    script_file.close()
    subprocess.Popen(script_name)