From: Octavian Purdila <opurdila@ixiacom.com>
To: Rick Jones <rick.jones2@hp.com>
Cc: netdev@vger.kernel.org
Subject: Re: TCP timewait recycle/reuse for IPv6?
Date: Mon, 17 Mar 2008 20:04:33 +0200 [thread overview]
Message-ID: <200803172004.33246.opurdila@ixiacom.com> (raw)
In-Reply-To: <47DEADC1.1040908@hp.com>
On Monday 17 March 2008, Rick Jones wrote:
> Octavian Purdila wrote:
> > Hi,
> >
> > Is there a way to prevent getting bind(in6addr_any) failures when we
> > have lots of TIMEWAIT sockets hanging around? It looks like timewait
> > reuse/recyle is not supported in the IPv6 stack.
>
> What is the definition/value of "lots" here?
>
At least 26000, maybe even more. I suspect that when I get the bind failures
most of the ports in the ip_local_port_range pool are in TIMEWATstate.
This happens because of the particular traffic I am using, which generates a
few 1000s of connections per second. The connection lifetime is very short.
While running the same traffic with IPv4, the timewait recyle/reuse features
kicks in and keeps the number of TIMEWAIT sockets to under a 1000.
Thanks,
tavi
next prev parent reply other threads:[~2008-03-17 18:04 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-17 16:18 TCP timewait recycle/reuse for IPv6? Octavian Purdila
2008-03-17 17:43 ` Rick Jones
2008-03-17 18:04 ` Octavian Purdila [this message]
2008-03-17 18:15 ` Rick Jones
2008-03-17 19:11 ` David Miller
2008-03-17 19:10 ` David Miller
2008-03-18 5:27 ` Bill Fink
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