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    SubjectRe: quite big breakthrough in the BAD network performance, which mm6 did not fix
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    just entered the site again with window scaling set to 1.
    i have patched my kernel with the patch from the tcp_default_win_scale
    thread, should i try without?
    On Wed, 2004-07-07 at 10:19 +0200, bert hubert wrote:
    > On Wed, Jul 07, 2004 at 08:37:44AM +0200, Redeeman wrote:
    >
    > > its 1 as default, using the tcp patch from another thread fixes so that i can connect to sites. (packages.gentoo.org etc)
    > > where before that patch came, i echo'ed 0 into it, and it worked aswell,
    > > however i didnt get more than 50kb/s either :|
    >
    > Redeeman, from your trace to outpost.ds9a.nl:10000 I note that something in
    > your path removes the wscale option, or that you have turned off window
    > scaling entirely. Can you check /proc/sys/net/ipv4/tcp_window_scaling ?
    >
    > 43.909623 redeeman.33083 > 213.244.168.210.10000: S 4031970603:4031970603(0)
    > win 5840 <mss 1322,sackOK,timestamp 23502 0>
    > 43.909678 213.244.168.210.10000 > redeeman.33083: S 634167324:634167324(0)
    > ack 4031970604 win 5792 <mss 1460,sackOK,timestamp 2136531455 23502> (DF)
    > 43.951129 redeeman.33083 > 213.244.168.210.10000: .
    > ack 1 win 5840 <nop,nop,timestamp 23543 2136531455>
    >
    > I also note that you most probably have tcp_default_win_scale set to 0.
    >
    > Can you confirm for me that with 2.6.7-mm6 (and exactly that version)
    > - you have no TCP connectivity to packages.gentoo.org by default
    yes
    >
    > - you can access packages.gentoo.org with /proc/sys/net/ipv4/tcp_default_win_scale
    > at both 1 and 0
    yes
    >
    > - that speed, even with tcp_default_win_scale set to 0, is
    > significantly lower than with stock 2.6.7, that is, if you
    > download some big files, and measure that, and then reboot
    > immediately to 2.6.7, things get lots faster
    yes
    >
    > Alternatively, can you reboot to a kernel with the problem ("can't connect
    > to packages.gentoo.org") and try to connect to http://outpost.ds9a.nl:10000
    > and tcpdump that and send me the dump (if it does in fact not work).
    >
    > Regards,
    >
    > bert
    >

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