Preferences - Extended Settings

Max. new Connections per 5 seconds
This is the number of new connections eMule opens during 5 seconds. Default is 20.

Autotake eD2k Links only during runtime
eMule is automatically started when clicking on one the special web links in your browser. This option prevents this behaviour.

Use Credit System (Reward Uploaders)
See the chapter Credit System for more information first. It is strongly recommended to leave the Credit System turned on as it will deter leechers from harming the network.

The reason for this option are:
>	Releasers can now make sure that no other file will take precedence over their release files by turning off this option.
>	A mixed network will better resist possible exploits of one system.
>	The balance between rare and popular files will increase.

Filter server and client LAN IPs
Sources containing IPs of the private IP classes A (10.0.0.0 - 10.255.255.255), B (172.16.0.0 - 172.31.255.255), C (192.168.0.0 - 192.168.255.255), local host (127.0.0.0 to 127.255.255.254) and all IPs starting with null (0.x.x.x) are not valid in the internet. Such sources received by client to client source exchange or by servers are dropped when this filter is activated.

Note:
Running eMule in a local network (LAN) requires this option be turned off or eMule will not be able to find any sources in this network.

Show more controls (advanced mode controls)
This options activates even more functions in eMule which are usually not needed for running it.

o Show Meta Data
This is a command in the right click menu of a download in the Transfer window. It shows additional information which may have been entered for this file like mp3 ID tag or Author, Year etc.

o Source handling (A4AF)
eMule only uses one queue slot on any other client. It is not possible to ask another client for two queue places simultaneously. Should another client offer sources for more than downloads, only one will get a QR value whereas the others will show the note Asked for another file in the source status.
Manual source handling allows to specify which download should get the QR from the sources. There are three functions to move the sources between downloads:

Swap All Sources To This File Now
This is a one time move of sources with the Asked for another file remark to this download. All sources of this download which previously show this note will get a QR assigned. Consequently the downloads from which the source status was swapped will now have the A4AF source.

Swap All Sources To Any Other File Now
If a download is not that important at the moment, this function will try to reassign its sources to other downloads if possible.

Automatically Swap All (A4AF) Sources To This File Now
Similar to Swap All Sources To This File Now, this function will care that all sources will always prefer this download when asking for a QR.

o Show number of Asked for another file sources as +xx for each download
Indicates the number of A4AF sources for each download in the Transfer list.

Check Diskspace (min. free diskspace [MB])
The size of eMule's temporary download files increases dynamically on demand. The Check Diskspace option ensures that the current downloads can be entirely downloaded and completed. Downloads which are too big for the current free disk space get paused so that other downloads can be completed.
If you provide a value for the min. free diskspace eMule's behaviour changes. Now all files are downloaded until the limit for free disk space is reached.
When free disk space increases the paused downloads will restart automatically.

Hostname for own eD2k Links
In the shared files main tab eD2k links with the current IP as source can be created. Entering a hostname in this filed allows to create such links with the hostname instead of the IP. The advantage of this link is that it is still valid should your IP change.
For more information on dynamic hostnames see the Webinterface chapter.

Save logs to disk
The output of the two log windows of the Server tab - Log and Debug - can be saved to disk by turning on the corresponding option. They will be save as eMule.log or eMule_Debug.log in eMule's installation folder.

Verbose (additional program feedback)
If Verbose mode is turned on an additional Debug tab is displayed in the Server window. The information shown therein are for development only and no additional support on these will be provided. This option causes a greater CPU and memory load. Not recommended for normal operation.

Safe .met / .dat file writing
On newer operating systems using NTFS as file system there is usually no need to change this option. If downloads are reproducibly lost on crashes or eMule shut downs the safer method should be tried.
Depending on the hardware used, this option may notably increase disk activity / system load or prolong eMule's shut down!

o On shutdown
eMule will use extra safety measures to commit the .met and .dat files to disk on application exit. This may prolong the time needed for shut down.

o Always
The safety measures are used on every write access to these files.

Server Connection Refresh Interval
There have been cases reported, that eMule loses the server connection in regular intervals when operating behind a router or network configurations which use NAT - Network Address Translation.
Routers often have a timeout for these NATed connections after which the router declares the connection for dead and closes it. When this happens and eMule tries to recheck its server, a full reconnect is needed because the old one has been removed by the router.
Should this issue occur, look up the value for the NAT timeout in your router's settings and enter a slightly lower value into the Server Connection Refresh Interval field. A value of 0 means eMule handles this and there is usually no need to change that!
Do not mess this this setting unless you have a router or a more complicated network setup. This may get you banned from the servers if the value is too low.

Upload Speed Sense (USS)
USS is a function to monitor the ping times of the connection and to automatically adjust eMule's upload according to this ping value. This ensures that the connection never cloggs and will try to keep surfing and online gaming fluid. It is recommended to keep the default settings.

o Find best upload limit automatically
Activates USS

o Lowest allowed upload speed
This is the minimum upload USS must keep. Recommended is at least 50% of your upload capacity

o Ping Tolerance (% of lowest ping)
A inital average ping is detertmined for the connection when eMule starts. USS will not allow a ping increase over the inital ping times the entered multiplier, e.g. an inital ping of 50 ms and 800% ping tolerance will result in a maintained maximum ping of 400 ms.

o Going up / down slowness
These two values describe how fast the upload limit is adjusted to stay within the ping tolerance. Setting wrong values here will collapse the connection. Keep default!

o Maximum number of pings for average
Sets the number of pings needed to calculate the average response time.

File Buffer Size
Some system may display a "stuttering" when eMule flushes its file buffers. Lowering the buffer size may help in this case but will result in a higher disk activity caused by eMule as data is written to disk more frequently. Setting the buffer size too low can severely reduce eMule's performance.
Increasing the buffer will reduce disk activity but at the risk of higher data loss should problems occur.

Queue Size
For the Credit System in eMule to work properly the queue size is very important. If a client has a full queue another client with a high credit rating will have no chance to enter the queue to spend his credits. So the larger the queue is, the better and smoother credit system will work. Clients with high credits will advance in long queues fast enough to get their share. Also, queue waiting time is not reduced when reconnecting due to IP change or similar. Time until reconnected may not exceed 1 hour or the queue position will be lost.

Important:
A larger queue does not result in a larger overhead for managing this queue. Neither the number of connections nor the connection overhead will be increased by a larger queue. Larger queues may use more memory.

Applies to version: .42a +
Last update on: 2004-02-27 by Monk