From: Andy Furniss <andyqos@ukfsn.org>
To: lartc@vger.kernel.org
Subject: Re: TCP/IP stack overloaded?
Date: Thu, 14 Feb 2013 09:55:31 +0000 [thread overview]
Message-ID: <511CB493.4040204@ukfsn.org> (raw)
In-Reply-To: <CAAFQuU1=t56pC-=Quzn3+MN7UhopAOp_kYE3fdNwpQDQbc=YUg@mail.gmail.com>
Ari Heitner wrote:
> On Mon, Feb 11, 2013 at 7:11 PM, Erik Auerswald
> <auerswal@unix-ag.uni-kl.de> wrote:
>> Hi Ari,
>>
>>
>> On 02/12/2013 12:54 AM, Ari Heitner wrote:
>>> Symptom: seemingly randomly, up to a few times a day, the network
>>> connection just chokes for about 30 seconds.
>>
>> Just an idea: check the number of currently active NAT sessions. Maybe this
>> hits a limit, some older sessions time out and everything works again.
>
> Have been running netstat-nat -n to take a look at things, both during
> normal operations and during the chokes - below is for normal
> operations
> camelot:~# netstat-nat -n | wc -l
> 374
> camelot:~# netstat-nat -n | grep tcp | wc -l
> 269
> camelot:~# netstat-nat -n | grep ESTABLISHED | wc -l
> 115
Doesn't seem very high, maybe you should check any traffic shaping rules
you have and think about where arp is going - if you use htb default xx
that will catch arp unless you have set up filters with "protocol arp"
to make it go elsewhere.
next prev parent reply other threads:[~2013-02-14 9:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-11 23:54 TCP/IP stack overloaded? Ari Heitner
2013-02-12 0:11 ` Erik Auerswald
2013-02-12 5:30 ` Remy Mudingay
2013-02-13 21:27 ` Ari Heitner
2013-02-13 21:53 ` 叶雨飞
2013-02-14 9:55 ` Andy Furniss [this message]
2013-02-18 16:58 ` Ari Heitner
2013-02-18 16:58 ` Ari Heitner
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