[SLE] Linux still surfs slower than Windows

From: Chris Carlen (crobc_at_sbcglobal.net)
Date: 02/19/05

  • Next message: Felix Miata: "[SLE] YOU aftermath" 
    Date: Fri, 18 Feb 2005 19:41:04 -0800
To: suse-linux-e@suse.com

    Hi:

    I have two Suse 9.1 Linuxes and one Win2k on a LAN behind a Linksys
    WRT54G router connected to SBC/Yahoo DSL. The router gets a dynamic IP
    via DHCP, and connects via PPPoE. It also receives DNS server
    addresses. The LAN hosts have static IPs on subnet 192.168.1.0 and
    statically configured DNS server addresses set to the values shown by
    the router. These DNS addresses are always the same: 63.203.35.55
    and 206.13.28.12 .

    The Windows host also has a static IP and manually configured DNS
    servers. Also, there is a Win2k VMware machine on each Linux box with
    bridged networking and static IP and DNS configurations.

    So a total of two Linux boxes, one real Win2k, and two virtual Win2k.

    The problem is simply that the Linux boxes using Mozilla or Konqueror
    web browsers, surf the web ridiculously slow. Typically 45 seconds to
    load a page like www.cnn.com, and 10-15 seconds to load simpler pages
    like www.google.com.

    The Win2k, both the real and virtual machines, all surf at instantaneous
    speed using either Mozilla or IE.

    I changed the Linux DNS server configurations to free servers:
    205.166.226.38 and 69.67.108.10, which improved speed significantly. Now
    Linux surfs about 3-4 times slower than Windows on average for all web
    sites. A big improvement, but still unacceptable. Typical 6-8 second
    loads for www.cnn.com, vs. 2-3 seconds for Windows.

    I posted before "Terrible Web Surfing Speed" and will summarize the
    results of the suggestions and other attempts at fixing this:

    1. The only suggestion which improved matters was to use in the file
    /etc/resolv.conf:

    options timeout:1

    This improved the surfing speed using SBC/Yahoo DNS servers to about the
    same speed as using the free servers, still about 3-4 times slower than
    Win2k. This is the condition I am in at this time.

    2. Switching to DHCP IP and DNS assignments for the LAN clients did not
    help.

    3. Turning off IPv6 did not help.

    4. Captain Dondo suggested: "Well, perhaps your router/ISP is issuing
    ICMP redirects and your linux box ain't set up to accept them? I don't
    know if Windows accepts redirects by default; it makes it easier for the
    user but opens up security holes.... Hmmm. Which way would Windows
    lean? As root, run this command:
    for f in /proc/sys/net/ipv4/conf/*/accept_redirects; do echo 1 > $f; done

    Well I have all these already set to 1 so that can't be the problem:

    > for f in /proc/sys/net/ipv4/conf/*/accept_redirects; do cat $f; done
    1
    1
    1
    1
    1

    5. Use the WRT54G as the DNS server. I tried this, and it works. Some
    performance is a little bit better than either the free servers or the
    options timeout:1, but still about 2 times slower than Windows.

    Hmm.

    Very close, but still disappointingly slower than Windows. It seems
    with the router as DNS, that initial loads of new pages are slow, but
    then loading again is very fast. Before, it was the same slow speed all
    the time. But Windows still manages twice the initial load speed for
    all pages.

    Any further suggestions how to improve things would be appreciated.

    Good day! 

    -- 
_____________________
Christopher R. Carlen
crobc@sbcglobal.net
SuSE 9.1 Linux 2.6.5
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  • Next message: Felix Miata: "[SLE] YOU aftermath"

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