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Date: Fri,  8 May 2015 18:13:05 +0200
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From: David du Colombier <0intro@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Content-Type: text/plain; charset=UTF-8
Subject: Re: [9fans] fossil+venti performance question
Topicbox-Message-UUID: 501f176a-ead9-11e9-9d60-3106f5b1d025

I've enabled tcp, tcpwin and tcprxmt logs, but there isn't
anything very interesting.

tcpincoming s 127.0.0.1!53150/127.0.0.1!53150 d
127.0.0.1!17034/127.0.0.1!17034 v 4/4

Also, the issue is definitely related to the loopback.
There is no problem when using an address on /dev/ether0.

cpu% cat /net/tcp/3/local
192.168.0.100!43125
cpu% cat /net/tcp/3/remote
192.168.0.100!17034
cpu% cat /net/tcp/3/status
Established qin 0 qout 0 rq 0.0 srtt 0 mdev 0 sst 1048560 cwin 396560
swin 1048560>>4 rwin 1048560>>4 qscale 4 timer.start 10 timer.count 10
rerecv 0 katimer.start 2400 katimer.count 2106

--
David du Colombier