OptimizeDownload/it

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questa pagina è ancora da tradurre. se vuoi collaborare prima leggi questo per le istruzioni.

un paio di avvisi:

a spiderman2012: il wiki è la guida ufficiale di Shareaza, non un luogo in cui chiedere aiuto.

Se hai dei problemi con Shareaza chiedi nel forum italiano

to lunanuova: the next time rather copy the text than to translate it directly on the original page/EDIT

Introduzione e premesse

La domanda più frequente su Shareaza o su qualsiasi altro P2P Clients riguarda il " downloading". Tutti credono sempre di dover sbloccare qualche impostazione nascosta per rendere veloci i propri download. La verità? Non esiste alcuna opzione simile!

In reltà il download è soggettivo. Puoi scaricare con la stessa velocità con cui gli altri utenti scaricano da te. Se provi a scaricare un file, e questo ha poche fonti (sources), il processo non sarà certo veloce. Perciò, più sono le fonti disponibili, più sarà veloce il dowload, almeno in teoria.

~~#FF0000:N.d.R.:~~ non fatevi fregare dalle unità di misura! C'è una grande differenza fra 1 Kb ( kilobits ) e 1 KB ( kilobytes )

1 Kilobyte = 8 Kilobits

Spesso gli utenti credono che scaricare a 16 Kb/s sia veloce e si aspettano che il processo finisca subito, quando,in realtà,stanno scaricando a 2 KB/s. Per cambiare il modo in cui Shareaza rappresenta la velocità di avanzamento:

Opzioni Shareaza > Generali > mostra velocità

e scegliete l'unità di misura che più vi aggrada. Clicca qui per maggiori informazioni sulle impostazioni di Shareaza.

Cerca nella rete (gnutella o gnutella2) qualche cosa di molto popoplare, un piccolo file con 50-100 fonti - una canzone famosa per esempio. Scaricala e, se non la scarica per niente o va molto lentamente, allora hai dei problemi di configurazione. Ad esempio, potreste provare a scaricare Shareaza stesso - usando il "Magnet Link". Tra gli utilizzatori di Shareaza questo è il file maggiormente condiviso - quindi la velocità di download dovrebbe essere elevata. Seguendo le istruzioni sotto, puoi aiutare a correggere questo problema. In ogni caso, se stai scaricando un file raro (cioè con poche fonti) e la velocità di download è insoddisfacente, questo non è un problema di Shareaza.

Bene, alcuni di voi probabilmente si fermeranno qui, osservando che i propri download hanno centinaia di fonti, ma c'è dell'altro. Questo probabimente è il problema della rete eDonkey2000, che è progettata per grandi file e velocità di download/upload costanti. D'altronde, questo modo di pensare non sempre significa velocità. Se lo stesso numero di fonti fossero disponibili sulla rete Gnutella2, il download sarebbe eccezionalmente veloce. Gnutella2 è molto più efficiente rispetto alla rete eDonkey2000, quindi più fonti ci sono su Gnutella2 meglio è.

Ora potreste chiedervi... e Kazaa? Kazaa ha milioni di utenti. La rete principale di Shareaza, (Gnutella2), ne ha pressapoco 60.000. Questa differenza di numeri mostra quanto Gnutella2 sia efficiente; infatti, benchè siano meno del 2% rispetto a Kazaa, Gnutella2 ancora mantiene i propri utenti. Continua a promuovere Shareaza e Gnutella2 e, un giorno, la velocità sulla rete G2 farà schizzar fuori Kazaa dall'acqua!

Anche solo alcuni dei file scaricabili con Shareaza, comunque, possono facilmente portare a decidere di soppiantare Kazaa, ammesso che Shareaza sia usato e configurato correttamente. Questa guida ti aiuterà a trovare i file migliori e a configurare Shareaza correttamente, cosi che la veocità di download darà a tutti gli utenti del P2P tempo per far soldi!

Cosa aspettarsi

Da Gnutella2: Gnutella2 (G2) è la rete principale di Shareaza. Tale rete è piccola se confrontata con altre reti come FastTrack (Kazaa) o eDonkey, ma è potente, con molte opzioni e una grande efficienza. Dovresti aspettarti code più corte su Shareaza (1-25 è la norma) e velocità soddisfacenti. Per le canzoni è eccellente, ma offre solo prestazioni medie sui file più grandi. La sola cosa che penalizza la velocità sui grandi file è lo scarso numero di fonti. Nel futuro la rete crescierà e di conseguenza le prestazioni. Con la rete che si amplia di giorno in giorno, la velocità crescerà. Gnutella2 è la rete ottimale sia per i piccoli file che per quelli grandi.

From gnutella: A network of mostly small files, good for music. It is much like Gnutella2 in the way that it acts in a similar structure, but it lacks the efficiency and features. Even with more users than Gnutella2, it actually offers worse performance. It also has short queues, like Gnutella2. Gnutella is best for smaller files (~ 4-10 MB).

From eDonkey2000: eDonkey is a network of long queues and large files. Don’t be surprised if you try to download something on eDonkey and you’re waiting in queues the size of your state's population. But, the network has pretty much everything, if you wait long enough (say, leave your download going overnight or longer). You'll be able to get most files eventually. Keyword: Eventually. The download is going to be slow, much slower than most other networks. This is why the network is suited for broadband users, who can leave their connections active all the time and wait through the queues and the slow download. However, there is a credit system involved - the more you upload to a user, the faster you go through their queues, helping you download faster. The longer you leave it on, the faster your download will be - to a point, of course. eDonkey is best for larger files (20 MB +).

From BitTorrent: BitTorrent has a reverse strategy of many P2P networks. It is not searchable, but uses a website run 'Tracker'. This 'Tracker' indexes the users that has downloaded the file, and when you begin downloading it, you receive the source list. Because of this, you will have no trouble finding sources, but if the tracker goes down, then so does your download. BitTorrent has a strategy - "The faster you upload, the faster you download". The downloads, therefore, are very fast, since few can leech. However, people won't be downloading the file forever, so a download might last a week or so, but not much longer than that. There are no queues in BitTorrent, nor do you need to connect to anything other than the tracker when you are not downloading, much unlike Shareaza's other three P2P networks. Sites that have BitTorrent links are provided in the guide.

BitTorrent is optimal for both large and small files.

Use High Sourced/Verified Files

This part is so crucial, I decided it deserves its own section. This is, by far, the most important thing you can do to get good download speeds. Kazaa, because of the raw user count, has a lot of sources for about everything. Since Shareaza's supported networks are smaller, and there are a lot less sources for every file. However, there are plenty of sources for a few key files that exist on the network.

Since more sources usually results in more speed, then you have to find the high sourced files to get a good download rate. There are two ways to do this - finding them by searching, or using the recommended way - downloading off Indexing Sites (AKA Verifed Files or Release Sites)

  • Searching - When searching, sort by the number of sources. Then, look for the file you want from the top to bottom. That way, when see the file you want, you will get the one with the most sources. The more sources, the better chance of a fast download. Searching is only recommended if want single songs, or can't find what you need on release sites.
  • Release Sites - Certain popular sites provide links to files on Shareaza's networks that have been found by users and usually have to be of a certain standard. This means there are no bad quality or fake files around these sites, period. They also give you the added bonus to discuss the file and view lots more useful information about the download. Since this is a central source to hundreds of users, many people download these files, making them extremely high sourced. These sites are far superior to searching if you want Software, Movies, Games or Music Albums. For BitTorrent, this is literally the only way to use it.


Sites: Recommended Sites for their respective network are underlined. It is best to try to find what you want on the underlined sites, but if you don't see it there, try the others. Be sure to refer to the above network introduction on which networks to use.


Setting Tips

These "option tweaks" should be the first you try to increase your download speed. They are quick, easy, and are often fix a configuration problem.


Update Shareaza

Shareaza is constantly updated with bug fixes, UI improvements, performance enhancements and new features. Find the latest release at the Shareaza Download Page.

Firewall and Router Configuration

If you have a firewall or router, be sure it is configured. You need to forward UDP and TCP packets through a port and configure Shareaza to use that port. See the Firewall/Router Configuration Page if you need help with this. This is a very important thing to do.

Modify the Download Connection Settings

  • Shareaza Settings > Internet > Downloads - Increase the number of 'Maximum Transfers' and 'Transfers Per file' to properly utilize your bandwidth - this allows you to optimize your "swarm" or "multisource" downloads. In other words - fixing this setting is strongly recommended
  • Shareaza Settings > Networks > eDonkey2000 - Increase the client link connections - this is the key to the eDonkey network, allowing you to stay in more queues and take advantage of your bandwidth.

Configuration Tips: Maximum Transfers - The ‘Maximum Transfers’ setting tells Shareaza how many transfers it can use to contact sources, and the more people it can contact, the faster it can start a download. The configuration of this setting depends on your bandwidth. Increase the setting until your bandwidth is allocated. A good ballpark for this setting would be ? if your download bandwidth (Example: 1000 kb/s Download Bandwidth ~ 650 Connections). The absolute maximum to set this setting at is 1500 - unless you have a very high bandwidth connection (fewer than 1% of Shareaza users) If you want to get the most out of your connection, try raising the number in increments of 50-75 and seeing which gives you the best performance. It is BAD for the network to increase this setting too high, so be sure you don't set it to an unreasonable amount.

Windows 9x Users: Do not increase the Maximum Transfers too high or you could crash your system! See the The Lockups Page for more information.


Configuration Tips: Transfers Per File The ‘Transfers per File’ is how many sources Shareaza can download from at once. The configuration of this setting also depends on your bandwidth. For a very high bandwidth connection, try 50. For a DSL connection of about 512 kb/s Download, try around 15. The more bandwidth you have, the more the setting should be increased.


Configuration Tips: Client Link Connections This setting determines how many eDonkey sources it can stay it contact with, and the more people you can download from, the better. It is related more to your computer than bandwidth – if your computer is slower, than don’t push it too high. For a newer computer and pretty fast broadband, 800 – 1000 wouldn’t be out of the question.

Windows 9x Users: Do not increase the Client Link Connections too high or you could crash your system! See the The Lockups Page for more information.


Update your eDonkey Serverlist

Shareaza gets lists of eDonkey servers which it can search from a 'server.met', which is hosted by various websites. You can set Shareaza to automatically download these lists.

Click some of the links below to automatically add 'server.met's to Shareaza.

For More Information and locations, see bluetack's server.met page


Connect to Additional Networks

  • Shareaza Settings > Networks > Gnutella - Check “Connect to Gnutella2 today’. Check “Connect to Gnutella Today/Always, if you choose).
  • Shareaza Settings > Networks > eDonkey2000 - Check Auto-Connect/Connect to eDonkey, if you wish.

Configuration Tips :

Gnutella2: Connecting to G2 is very strongly recommended no matter what you download, since it will has a large range of file types and pretty good speeds. It is growing by the day, and takes advantage of all Shareaza’s Advanced Features. Gnutella1: Only connect to G1 for music and other small files. It offers poor performance on larger files, so you won’t find much other than audio here. eDonkey2000: Connect to eDonkey for larger files, such as Movies, Software and Games. eDonkey has more users than the Gnutella networks combined, but, due to how the network is designed, offers very poor performance on smaller files. The eDonkey network actually discourages sharing lots of small files, due to its design. BitTorrent: To download BitTorrent files, you are not required to connect to anything when you are not downloading.


Set your Connection Speed

  • Shareaza Settings > Internet > Connection - Set the 'Inbound Address' to a number slightly below your rated download bandwidth. Do the same for the 'Outbound Address', setting it just below your upload bandwidth.

Configuration Tips:

  • If you do not know your rated line speed, check out The Speed Test Page or ask your Internet service provider.
  • Set the connection speeds to about 80% of your rated numbers, otherwise Shareaza will suck up all of your bandwidth.


Practical Suggestions

If you have gone through all the above tweaks, and your download speed still is not satisfactory, then the following tips should do the trick. These are things that you do over time and don't take affect for a little while. However, these techniques are the ones that all the P2P experts use to get the most performance out of Shareaza and its incorporated networks.


Leave Shareaza Running

Leave Shareaza active for a couple days. If you are downloading from the eDonkey network, it will take time to get to the end of the line in your queue spot. You will see your best download performance after leaving Shareaza on for an extended period of time. Don't judge speed in the first few minutes, because the speed is often much faster towards the middle of a download than at the start.


Tweak your DSL/Cable (Broadband) connection

Sometimes a misconfiguration outside of Shareaza can affect the download speeds. Broadband Reports is a great resource for tweaking and learning more about broadband in general. The site will try and help make your internet connection more efficient. If you do not have broadband, getting it would also be an excellent speed tweak.

Conclusion

Please remember that these are extra tweaks and suggestions to help improve your downloading experience. They may work, but then again, they may not. Don't feel that you are guaranteed speed by reading this, but it probably enhance your Shareaza experience one way or another.

Every single user has a unique situation, and it isn't possible to give each and every one of the users the optimal settings and suggestions. Your best bet is to read carefully and try to figure out the mild science behind all this. It's actually just simple math. It has become common practice now to post forum threads, asking for more tweaks or "personal settings" and neglecting to read this guide. Please do not do this! The same question is asked over and over, and users do their best to respond to these questions. However, a small mistake in judgement on a settings, and you lose all possible preformance with Shareaza. Plus, there are so many of these threads that they clutter up the forum, and many people just ignore them anyway.

This guide is not perfect, and probably never will be. However, if you have something you'd really like to add, feel free to send a message to any Moderator or Alpha Team Member, and they can help out. Whether it be telling friends about Shareaza, adding to this guide, participating in the forums, or just raising your upload bandwidth, help the network grow. One day, we can make Shareaza a program as well known as Kazaa, with speeds to match. Until then - keep sharing. Every bit counts.