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Yay, another QoS question! (This one is simple)

Discussion in 'Tomato Firmware' started by guru_ck, Feb 22, 2007.

  1. guru_ck

    guru_ck LI Guru Member

    Hey Guys,

    Just installed Tomato last night and I'm loving the QoS features for BitTorrent. I haven't mastered it yet and I'm in no way a pro but I'm learning it and having fun tweaking it.

    First question - What's the deal with all the different classes? Is there any logic behind this? Seems like the average person would probably only need 3 classes for speed 25%, 50%, 100%. Highest, High, Medium, Low, Lowest, Class A B C D E. If I turn off all of them except class A B C is it going to hurt anything? Too many options for me!

    Next - I don't fully understand the purpose of the drop downs in "Outbound Rate / Limit". I get that the single variable you set "Inbound Limit" will define the max speed for that class but why are there two variables for "Outbound Rate / Limit"? x - x kbit/s, why?


  2. GeeTek

    GeeTek Guest

    On your questin about the classes, they are useful for controlling not just speed, but for establishing more categories of control. I have one running a 186 room hotel with as many as 90 users at a time with every kind of traffic you could imagine. I would love to have categories down to about P or Q, to help organize and control things more precicely.

    Your second question could use some more discussion and testing in my opinion. From what I read, the first column is a guaranteed minimum for that class, and the second column is the maximum cap. This would seem to require that the first column add up to a value of 100. I've got mine set up along those lines, and it works very well. My interpretation may not be accurate or only partially accurate. Hope to see more comment on that.
  3. RTSAnime

    RTSAnime Network Guru Member

    From what I can tell you comment is correct. The Rate is the "guarantee" during peak usage. On the other hand the max is the "if there is more bandwidth available how much am I allowed to use" setting
  4. t0m80

    t0m80 LI Guru Member

    Leave the settings as they are, only change something if you really really know what you do. In the worst case QoS won't work right.
    Should be enough to enter 90% of your theoretical upload speed in Outbound Max Bandwidth and add rules(Classification) you need, leave the rest @standard.
    Reading the FAQ and wiki would be appropriate.
  5. azeari

    azeari LI Guru Member

    For your first qn, the % as mentioned is the guarenteed bandwidth for each class. i.e. total guarenteed bandwidth for a particular class is 25%. That refers to the connections in that class competing for the 25% if thats all that remains. If the remaining bandwidth is free though(not being utilized by classes above it), the class will then get more bandwidth

    As for the outbound and inbound rate limits. Its as it states, the maximum bandwidth allowed for outgoing connections and inbounds.

    The need to limit outgoing connections is due to the way ISPs limit your bandwidth. If you're utilizing the full 100% bandwidth, its likely that your connetion latencies will increase as well.

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