Subject: Re: very slow TCP connection on localhost
To: Manuel Bouyer <bouyer@antioche.eu.org>
From: Pavel Cahyna <pavel.cahyna@matfyz.cz>
List: tech-net
Date: 09/06/2006 11:59:56
On Wed, Sep 06, 2006 at 11:25:15AM +0200, Manuel Bouyer wrote:
> > netstat -p tcp
> tcp:
>         55301661 packets sent
>                 13468160 data packets (48765174014 bytes)
>                 142584 data packets (4668081807 bytes) retransmitted
>                 34049565 ack-only packets (39723827 delayed)
>                 0 URG only packets
>                 37 window probe packets
>                 7634105 window update packets
>                 7210 control packets
>                 0 send attempts resulted in self-quench
>         82696703 packets received
>                 7720952 acks (for 48546121615 bytes)
>                 282855 duplicate acks
>                 0 acks for unsent data
>                 73536819 packets (135089199940 bytes) received in-sequence
>                 60 completely duplicate packets (1636 bytes)
>                 0 old duplicate packets
>                 0 packets with some dup. data (0 bytes duped)
>                 1433 out-of-order packets (238920 bytes)
>                 142483 packets (4667744870 bytes) of data after window
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
this looks wrong.

Pavel