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Thread: pptp is twice slow with x86_64

  1. #1
    Join Date
    Oct 2009
    Beans
    2

    pptp is twice slow with x86_64

    I compared pptp performance between i386 and amd64 versions of ubuntu 9.10. My cpu e8400. Config files was the same, network manager completely removed. I found on amd64 pptp as twice slower as on i386 (avg 5,39M/s on i386 and 2,78M/s on amd64). Near windows pptp server (connected in one giga stacked switch) on ubuntu 9.10 i386 without pppoe i have 8,93M/s over 1gbit link on Intel(R) Pentium(R) 4 CPU 3.00GHz.
    My pptp connection established over pppoe, but in both cases pppoe transfer data with maximal speed (100mbit, tested with wget -O /dev/null).

    /etc/ppp/peers/test:
    Code:
    remotename test
    persist
    linkname test
    ipparam test
    pty "pptp <my_ip> --nolaunchpppd "
    name test
    require-mppe
    nomppe-40
    refuse-eap
    noauth
    file /etc/ppp/options.pptp
    noproxyarp
    maxfail 0
    /etc/ppp/options.pptp:
    Code:
    lock
    noauth
    nobsdcomp
    nodeflate

  2. #2
    Join Date
    Oct 2006
    Beans
    305

    Re: pptp is twice slow with x86_64

    I have the same issue with xl2tpd. Filled a bug.
    https://bugs.launchpad.net/ubuntu/+s...ux/+bug/484794

  3. #3
    Join Date
    Oct 2006
    Beans
    305

    Re: pptp is twice slow with x86_64

    I have the same issue with xl2tpd. Filled a bug.
    https://bugs.launchpad.net/ubuntu/+s...ux/+bug/484794

  4. #4
    Join Date
    Nov 2009
    Beans
    81

    Re: pptp is twice slow with x86_64

    I have the same issue (both pptp and xl2tpd suffer from it). Please, confirm this bug: https://bugs.launchpad.net/ubuntu/+s...ux/+bug/484794

  5. #5
    Join Date
    Oct 2009
    Beans
    2

    Re: pptp is twice slow with x86_64

    I found a solution - use accel-pptp.
    With ubuntu 10.10 x64 I have now ~95Mbit pptp with mppe 128 over pppoe over 100mbit link.

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