Weird QoS issue, same class different speeds

Discussion in 'Tomato Firmware' started by lanmtl, Jan 8, 2010.

  1. lanmtl

    lanmtl Addicted to LI Member

    Greetings all!

    So, I'm having an interesting issue on my network.
    QoS is set as per a tutorial I found in here and works great.

    I have set via IP ranges the connections to the NNTP servers we use for binaries to be class E.
    As you might have guessed, packets in E class are the least prioritized packets.

    Tomato classifies the streams fine and the whole thing works great.

    Except for one detail:
    When both computers download off usenet, the Win7 PC gets about half the speed the Mac does. Always. No matter who started to download first.
    Win7 PC is wired via ethernet, the Mac is wifi.

    I can't figure this one out. Any thoughts?
  2. Toastman

    Toastman Super Moderator Staff Member Member

    Perhaps it is the difference in operation between the TCP/IP stacks used in the two OS's ? It's also possible that the faster speed of the LAN compared with Wireless gives the Windows machine an advantage. It would be interesting to put them both on the LAN and see if the same situation exists.
  3. lanmtl

    lanmtl Addicted to LI Member

    I thought the LAN could give the PC an advantage but it is actually slower than the Mac on Wifi.
    I will try both on LAN later on today and post the results here
  4. Toastman

    Toastman Super Moderator Staff Member Member

    Do you mean the PC on the LAN is slower than a MAC on a "g" wireless link?

    If the LAN (100mbps) really is slower than wifi, then maybe there is something seriously wrong with the LAN or the PC. Accessing the router GUI via LAN is always noticeably faster than wireless here - most pages are almost instantaneous. Of course if the PC is underpowered, has too little RAM, or is heavily loaded, that will also affect it LAN performance. I'm assuming you have checked that too. Still, I think it's unlikely to be the LAN performance that causes the problem. Of course, it could be just the different applications (nntp client) used on the different machines.

    I use Windows 7 64 bit, by the way, on Gigabyte M/B 4GHz Core 2 Duo with 6GB memory.
  5. lanmtl

    lanmtl Addicted to LI Member

    the pc is slower only for nntp.
    it is brand new with a fresh and clean win7 x64 corporate install.

    the mac is faster either on wifi or lan when it comes to nntp. both computer have the same client (sabnzbd)
    each computer has 10 connections each to the nntp server and they all fall within the class E that they have been assigned for QoS.

    the mac downloads at around 200ko/s when the pc is only around 100. when there is only one computer (either one) downloading off usenet, it gets the full 320ko/s or so

    the wan link saturates around 530ko/s
  6. Toastman

    Toastman Super Moderator Staff Member Member

    There would seem to be some difference in the NNTP clients compiled for different platforms. But this may not be the cause, of course! Perhaps you'll never find the reason.

    This NNTP app looks interesting! Any recommendations for an open public server?
  7. lanmtl

    lanmtl Addicted to LI Member

    I couldn't find any reliable open public server. There must be some but I use
    They charge 11$ per month for unlimited speed and traffic and have around 512 days retention now.
    You have to go there for the 11$-for-life special price, normally its 15$
    And to search NZBs, I use
    Finally, if you have a Mac, SABnzbdX is a nice addition to SABnzbd

    Its definitely a weird issue, and a bummer for the person who I'm sharing the connection with..!
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice