netdev - Re: 40k+ outbound connections and bind() problem

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Message-ID: <1296048409.2899.63.camel@edumazet-laptop>
Date:	Wed, 26 Jan 2011 14:26:49 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	denys@...p.net.lb
Cc:	Daniel Baluta <daniel.baluta@...il.com>, netdev@...r.kernel.org
Subject: Re: 40k+ outbound connections and bind() problem

Le mercredi 26 janvier 2011 à 15:23 +0200, denys@...p.net.lb a écrit :
> On Wed, 26 Jan 2011 14:17:14 +0100, Eric Dumazet wrote:
> > Le mercredi 26 janvier 2011 à 15:00 +0200, Daniel Baluta a écrit :
> >> Hi,
> >>
> >> > Latest stable, 2.6.37
> >>
> >> Please apply this patch [1] and see if it's still happening.
> >>
> >> thanks,
> >> Daniel
> >>
> >> [1] http://www.spinics.net/lists/netdev/msg152204.html
> >> -
> >
> > I dont think it'll help ;)
> >
> > Denys problem is if one source IP address is used, there is an 
> > absolute
> > 64K limit to (IP, port) tuple
> >
> > Only thing you can do is to tune 
> > /proc/sys/net/ipv4/ip_local_port_range
> > to get close to 64K limit
>  No, it is not one ip source.
>  As i mention before, i am binding each instance to different IP before 
>  connect().
>  And when i am having issues and such errors, i am trying httping and 
>  binding it to some unused ip, but still getting this error.

Ah OK, you definitely want to use REUSEADDR then.



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