Messages in this thread | | | Subject | Re: 2.6.17: slow (as hell) tcp inbound transfers | From | Brice Figureau <> | Date | Mon, 19 Jun 2006 17:52:43 +0200 |
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On Tue, 2006-06-20 at 01:15 +1000, Con Kolivas wrote: > On Tuesday 20 June 2006 00:59, Brice Figureau wrote: > > On Mon, 2006-06-19 at 16:17 +0200, Vincent Vanackere wrote: > > > On 6/19/06, Brice Figureau <brice+lklm@daysofwonder.com> wrote: > > > > It seems that TCP inbound transfers (using either curl, or scp) are > > > > really slow except when issued on our gigabit LAN. > > > > > > Could you try the following to see if it cures your problem ? > > > > > > echo 0 > /proc/sys/net/ipv4/tcp_window_scaling > > > > Yes, that fixed it: > > [snipped] > > Did something has changed between 2.6.16 and 2.6.17 regarding TCP window > > scaling ? > > > > I remember a discussion on lklm aroung 2.6.7 or so that finally ended as > > a bug in a firewall that wasn't handling TCP window scaling gracefully. > > That's certainly my case, I'll will have a look to that. > > See: > > http://kerneltrap.org/node/6723
Thanks for the pointer and sorry for the noise. -- Brice Figureau
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