Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Supported by

Fail to (fully) transfer Data

Hello, 

Our lab has faced similar problems as this post. Since we don't know what is "database's character, " therefore it doesn't seem to be the reason.  

The version information we use are as followings: 

JATOS 3.8.1.

OpenSesame 3.3.12

Period: from March 20. 


Now our participants have faced these three main situation, they all reported to us their computer are stuck at the "transferring data" page for over ten minutes :

1. completed the study but data failed to transfer: 

Result ID: 238987


2. completed the study but data failed to fully transfer: 

Result ID: 246317


3. completed the study but stuck in the "transferring data"  while finally transferring data successfully: 

Result ID: 246033


Let me know if there's any other information I can provide.

Thanks,

GUO

Comments

  • Hi GUO,

    Difficult to say. But since some of your study runs do finish after a long "transfering data" my guess is that our data is either to large, or you sending data to often, or a combination of both.

    How big is your data and how often do you submit them?

    Best,

    Kristian


  • Thanks for your quick response!!

    The data is about 1800-1900 KB~

    It's hard to count how often, but take the date April 1 (4月1日) for example,

    there are 11 participants doing tasks, and on that date,

    one of them (ACTP3_1006 in Image2) having transferring problem (Study ID:9253)




  • The data is about 1800-1900 KB~

    That might be the reason if you sent the data often. Sending data often can overload the network and when you participants network connection is weak it can lead to exactly this behavior ("transfering data" for a long time).

    A little bit of background about how JATOS handles data submission. jatos.js, JATOS' JavaScript library, puts all data submissions in a queue and sends them one after another. This ensures data arriving in the correct order at the server-side. It also guarantees if the data is submitted successful you can rely on it being stored in JATOS' database (in your case this sometimes does not happen and therefore your studies sometimes do not finish). But if your study tries to submit large data in short succession this queue might just fill up and the "transfering data" is shown.

    This usually does not happen on your development computer since it probably has a good network connection and / or JATOS is installed locally. You can try to emulate such behavior. Every major browser has the possibility to throttle the network. E.g. in Firefox open the Developer Tools -> Network -> Throttling and choose some slow network (e.g. 3G or 4G). Then run your study and see if the "transfering data" appears and how long. You can also monitor the network traffic in your Network view.

    Best,

    K.

  • Hi kri

    Thanks for your detailed explanation and suggestion. We will try to test in the way you suggest.

    However, our group has a big question is that we do the same experimental schedule from January to February this year (as the picture shows), but at that time there is no such transferring problem. We noticed that Jatos has updated to the latest version on February 28. Is there any possibility that the problem is concerned with the compatibility between Jatos and Mindprobe?


    Let me know if there's any other information I can provide.

    Thanks,

    GUO

  • Hi GUO,

    The changes between the former version on Mindprobe, 3.7.4, and the current version 3.8.1 are mostly around the JATOS API. The JATOS API is mostly about study export/import, result fetching, and administration - it is not about study runs and anything that touches participants. So it's is not impossible that the update has an effect on your participants but I think it's unlikely.

    Best,

    K.

Sign In or Register to comment.

agen judi bola , sportbook, casino, togel, number game, singapore, tangkas, basket, slot, poker, dominoqq, agen bola. Semua permainan bisa dimainkan hanya dengan 1 ID. minimal deposit 50.000 ,- bonus cashback hingga 10% , diskon togel hingga 66% bisa bermain di android dan IOS kapanpun dan dimana pun. poker , bandarq , aduq, domino qq , dominobet. Semua permainan bisa dimainkan hanya dengan 1 ID. minimal deposit 10.000 ,- bonus turnover 0.5% dan bonus referral 20%. Bonus - bonus yang dihadirkan bisa terbilang cukup tinggi dan memuaskan, anda hanya perlu memasang pada situs yang memberikan bursa pasaran terbaik yaitu http://45.77.173.118/ Bola168. Situs penyedia segala jenis permainan poker online kini semakin banyak ditemukan di Internet, salah satunya TahunQQ merupakan situs Agen Judi Domino66 Dan BandarQ Terpercaya yang mampu memberikan banyak provit bagi bettornya. Permainan Yang Di Sediakan Dewi365 Juga sangat banyak Dan menarik dan Peluang untuk memenangkan Taruhan Judi online ini juga sangat mudah . Mainkan Segera Taruhan Sportbook anda bersama Agen Judi Bola Bersama Dewi365 Kemenangan Anda Berapa pun akan Terbayarkan. Tersedia 9 macam permainan seru yang bisa kamu mainkan hanya di dalam 1 ID saja. Permainan seru yang tersedia seperti Poker, Domino QQ Dan juga BandarQ Online. Semuanya tersedia lengkap hanya di ABGQQ. Situs ABGQQ sangat mudah dimenangkan, kamu juga akan mendapatkan mega bonus dan setiap pemain berhak mendapatkan cashback mingguan. ABGQQ juga telah diakui sebagai Bandar Domino Online yang menjamin sistem FAIR PLAY disetiap permainan yang bisa dimainkan dengan deposit minimal hanya Rp.25.000. DEWI365 adalah Bandar Judi Bola Terpercaya & resmi dan terpercaya di indonesia. Situs judi bola ini menyediakan fasilitas bagi anda untuk dapat bermain memainkan permainan judi bola. Didalam situs ini memiliki berbagai permainan taruhan bola terlengkap seperti Sbobet, yang membuat DEWI365 menjadi situs judi bola terbaik dan terpercaya di Indonesia. Tentunya sebagai situs yang bertugas sebagai Bandar Poker Online pastinya akan berusaha untuk menjaga semua informasi dan keamanan yang terdapat di POKERQQ13. Kotakqq adalah situs Judi Poker Online Terpercayayang menyediakan 9 jenis permainan sakong online, dominoqq, domino99, bandarq, bandar ceme, aduq, poker online, bandar poker, balak66, perang baccarat, dan capsa susun. Dengan minimal deposit withdraw 15.000 Anda sudah bisa memainkan semua permaina pkv games di situs kami. Jackpot besar,Win rate tinggi, Fair play, PKV Games