致命错误:CALL_AND_RETRY_LAST分配失败 - 加工出来的记忆

问题描述 投票:3回答:1

下载为csv文件,我不知道是什么问题,它的做工精细,当用户40000条记录,当过我试着打API(80,000记录),其显示过程内存不足。请帮我看看这个问题

  app.get('/excelData', function (req, result) {
 var fields = ['firstName','lastName','catalina_cardStatus','deviceType','appVerison','phoneNumber','emailAddress','language','state','lastLogin','dateOfBirth']
 var data = [];
   var status = true;
   User.find({accountType:'user',isDeleted: {$ne:{status}}}).sort({created: -1}).exec((err, res) => {
     var resultData = [];
         var len = res.length;
         res.map((user,key) =>{
       var resData = {};
       if(user) {
         resData.firstName = user.firstName;
         resData.lastName = user.lastName;
         resData.catalina_cardStatus = user.catalina_cardStatus;
         resData.language = user.language;
         resData.phoneNumber = user.phoneNumber;
         resData.deviceType = user.deviceType;
         resData.appVerison = user.appVerison;
         resData.emailAddress = user.emailAddress;
         resData.state = user.state;
         resData.dateOfBirth = user.dateOfBirth;
         if(user.lastLogin){
           var date = new Date(user.lastLogin);
           var utcDate = new Date(date.toISOString());
           var utc = utcDate.setHours(utcDate.getHours()-8);
           var usDate = utc;
             var time = moment(utc).format("DD-MM-YYYY");
             resData.lastLogin = time;
         }
 }
          resultData.push(resData);
          len--;
          if(len==0){
                var csv = json2csv({ data:resultData , fields: fields });
                fs.writeFile('path', csv, function(err,data) {
                  setTimeout(function () {
                      fs.unlinkSync('path'.csv');
                    }, 30000);
                    result.send({msg: "saved sucessfully",path :'path.csv'});
                  if (err)
                  {
                    throw err;
                    console.log("Error: "+err);
                  }
                })
          }

     })
 })

 });
javascript node.js mongodb forever
1个回答
0
投票

当被分配用于执行应用的内存少于运行应用程序时所需要的存储器发生该错误。

默认情况下,在Node.js的内存限制为512 MB,要解决这个问题,你需要增加内存限制使用命令—- max-old-space-size。它可避免内存限制的问题。

node --max-old-space-size=1024 index.js #increase to 1gb
node --max-old-space-size=2048 index.js #increase to 2gb
node --max-old-space-size=3072 index.js #increase to 3gb
node --max-old-space-size=4096 index.js #increase to 4gb
node --max-old-space-size=5120 index.js #increase to 5gb
node --max-old-space-size=6144 index.js #increase to 6gb
node --max-old-space-size=7168 index.js #increase to 7gb
node --max-old-space-size=8192 index.js #increase to 8gb
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