lagg speed trouble

[Vyacheslav Kulikovskyy]

2012/7/5 Eugene Grosbein <egrosbein at rdtc.ru>

> 04.07.2012 18:30, Vyacheslav Kulikovskyy пишет:
> > i have sever with two 1G links (em) aggregated by lagg0
> >
> > after 1700Megabits i have collisions/errors on lagg0 port, but not on em0
> > or em1
> >
> > I'm using nginx in own CDN. and server don't limited my mbufs, irq, or
> > anything else.. only lagg0 errors (
>
> lagg0 by default uses way too small output FIFO queue, 50 slots.
> You definitely want to increase this to sum of your em intefaces
> txd buffers at least. So, if you use hw.em.txd=4096, you should
> use 8192 for lagg or more. I prefer 10K, in /boot/loader.conf:
>
> net.link.ifqmaxlen=10240
>
> Reboot is required.
>
> Eugene Grosbein
>

This is solution don't help me
hw.em.txd: 4096
net.link.ifqmaxlen: 10240

# netstat -w 1 -I lagg0
            input        (lagg0)           output
   packets  errs idrops      bytes    packets  errs      bytes colls
     77600     0     0    4771508      71175    70  208916199     0
     79747     0     0    4885070      73101   242  218847447     0
     84956     0     0    5262540      74504   455  213752515     0
     81333     0     0    4998499      73836   229  215808086     0

and no errors on em0,em1

more info: FreeBSD 9.0-STABLE #0: AMD64

ps after small test i'll try patch from  Andrew Thompson