Messages in this thread |  | | | Subject | Re: quite big breakthrough in the BAD network performance, which mm6 did not fix | | From | Redeeman <> | | Date | Wed, 07 Jul 2004 10:29:36 +0200 |
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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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