QOS Revisited ... Inbound Limits

Discussion in 'Tomato Firmware' started by pharma, Feb 1, 2007.

  1. pharma

    pharma Network Guru Member

    This is probably already known here, but I thought I'd write about my experiences regarding setting QOS Inbound Limits with Tomato 1.04.

    Initially I did not have any Inbound Limits set and was downloading a fairly fast torrent at about 298 kb/s. I started testing to see whether changing any of the Inbound Limit parameters affected the download speed - I selected the Inbound Layer 7 option under Advanced - Conrack/NetFilter. Then I changed the QOS Lowest Inbound Limit to 5% and found it reduced the Torrent download speed indicator (realtime) to approx. 80 kb/s. Further playing with the QOS Lowest Inbound Limit altered the torrent speed anywhere from 12 kb/s to 298 kb/s.

    Further, changing the QOS Highest/High Inbound Limits anywhere from 90-100% improved my web browsing speed when a torrent download was happening.

    I'm sure others have noticed this behavior, but thought I'd give my experience with this feature. My only suggestion is the best way to play and fine tune this feature is by trial & error, and to find a big, fast torrent file and change the QOS Inbound Limit parameters accordingly as the download is happening. Using your torrent software you'll definitely notice speed changes as you save different Inbound Limit parameters, and if the changes affect other internet activity, ie. web browsing, internet phone, etc.

    Thanks to Jon for a great firmware! :thumbup:

  2. larsrya8

    larsrya8 LI Guru Member

    I read your post twice, but couldn't determine what you were trying to tell us?
  3. pharma

    pharma Network Guru Member

    I have that effect sometimes ... :)

    Just trying to state that altering the QOS Inbound Limits definitely impacts the speed within a particular category. In my case it happened to be a large torrent file - before any changes the torrent download speed was 298 kb/s - after changing QOS Inbound Limits for the Lowest category the download speed dropped to 80 kb/s.

    Before changing Inbound QOS Limits, my internet connection seemed somewhat saturated and web browsing seemed to lag slightly. After the speed drop it seemed to free up things abit and made web browsing easier. :smile:

    Not sure if it's any clearer but I'd encourage people to play more with the features available in the firmware.
  4. larsrya8

    larsrya8 LI Guru Member

    Did you limit your "Lowest" category to 80KB/sec, or was it different from what you set it to?
  5. pharma

    pharma Network Guru Member

    Remember we are talking about Inbound QOS, not Outbound QOS.

    Initially my Inbound Lowest category was set to None. I then changed None and tested different percentage settings - 60%, 45%, 20%, 5%, 2%, etc ... Everytime I changed the percentage it directly impacted the speed of the torrent (as viewed from the bittorrent application).

    The 80KB/sec was the result using a very low percentage (either 2% or 5%) for the lowest category.
  6. dolly_oops

    dolly_oops Network Guru Member

    While I'd like to be able to control my incoming traffic to be slower when it's being used by something else (HTTP traffic, for example), I don't enable incoming QoS, because it's set to be a fixed limit, whereas I want something a bit more dynamic...
  7. larsrya8

    larsrya8 LI Guru Member

    Tomato shows what speed you've set the category to, in kbps, next to it. That is what I was asking.
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