Home Forums Blogs Articles Photos Videos Contact FAQ

EMule - Credit system

EMule - Credit system: Encyclopedia II - EMule - Credit system

EMule - Introduction. The credit system is used to reward users contributing to the network, i.e. uploading to other clients. The strict queue system in eMule is based on the waiting time a user has spent in the queue. The credit system provides a major modifier to this waiting time by taking the upload and download between the two clients into consideration. The more a user uploads to a client the fas ...

EMule, EMule - History, EMule - Recent events, EMule - Network and file sharing issues, EMule - Basic concepts, EMule - Classic server based eD2k, EMule - Kad serverless network, EMule - Basic rules of communication behavior, EMule - Summary, EMule - eMule mods, EMule - Credit system, EMule - Introduction, EMule - Credit calculation, EMule - Notes, EMule - Colors of the Progress Bar, EMule - Basic Styles, EMule - Download Bar, EMule - Source Count, EMule - Obtained Parts, EMule - Availability of shared files, EMule - Network status

EMule, EMule - Availability of shared files, EMule - Basic Styles, EMule - Basic concepts, EMule - Basic rules of communication behavior, EMule - Classic server based eD2k, EMule - Colors of the Progress Bar, EMule - Credit calculation, EMule - Credit system, EMule - Download Bar, EMule - History, EMule - Introduction, EMule - Kad serverless network, EMule - Network and file sharing issues, EMule - Network status, EMule - Notes, EMule - Obtained Parts, EMule - Recent events, EMule - Source Count, EMule - Summary, EMule - eMule mods, File sharing, ANts P2P, DC++, MUTE, Soulseek, Shareaza, BitTorrent

EMule: Encyclopedia II - EMule - Credit system

EMule - Credit system

EMule - Introduction

The credit system is used to reward users contributing to the network, i.e. uploading to other clients.

The strict queue system in eMule is based on the waiting time a user has spent in the queue. The credit system provides a major modifier to this waiting time by taking the upload and download between the two clients into consideration. The more a user uploads to a client the faster he advances in this client's queue.

The modifiers are calculated from the amount of transferred data between the two clients. The values used can be seen in the client's details dialog. To view this information, right click on any user and choose View Details.

EMule - Credit calculation

A user's position in other clients' queues depends on various factors, including the time they have been waiting in the queue, the upload priority for the requested file, and the user's credit. These factors are all expressed in an integer value, and their total gives a "score" which is used to rank the users in the queue.

The credit is calculated in the following way:

If the client has ever uploaded less than 1 MB, the credit value is 1.
If the client has uploaded more than 1 MB, but never downloaded anything, the credit value is 10.
Otherwise:
- Calculate the following value: total uploaded data × 2 / total downloaded data.
- Calculate the following value: Square root of total uploaded data + 2.
- Out of those two values, choose the one that is lower. Call it x.
- If x is less than 1, the credit value is 1. If x is greater than 10, the credit value is 10. Otherwise, the credit value is x.

EMule - Notes

All Clients uploading to you are rewarded by the credit system. It does not matter if the client supports the credit system or not.
Not supporting clients will grant you no credits when you upload to them.
Credits are not global. They are exchanged between two specific clients
Credits are stored in the clients.met file. The unique user hash is used to identify the client.
Your own credits are saved by the client who owes you the credit. This prevents faking the credits.
Your own credits cannot be displayed