From: Patrick McHardy <kaber@trash•net>
To: Anand Raj Manickam <anandrm@gmail•com>
Cc: Eric Dumazet <eric.dumazet@gmail•com>,
netdev@vger•kernel.org, netfilter-devel@vger•kernel.org,
shemminger@vyatta•com
Subject: Re: Kernel Panic on OOM with 10 HTB rules
Date: Thu, 16 Sep 2010 11:35:29 +0200 [thread overview]
Message-ID: <4C91E4E1.4030001@trash.net> (raw)
In-Reply-To: <1283949778.2748.5.camel@edumazet-laptop>
On 08.09.2010 14:42, Eric Dumazet wrote:
> Le mercredi 08 septembre 2010 à 16:22 +0530, Anand Raj Manickam a
> écrit :
>> I m struck with
>> Kernel Panic - Out of Memory Issue when traffic is more than 100k
>> pps and have around 10 tc rules.
>>
>> There is NO kernel panic with 1 tc rule .
>>
>> I using a 2.6.34.6 ( latest stable kernel) with SMP enabled
>>
>> The rules are simple -
>> 10 iptable rules :
>> iptables -t mangle -I FORWARD -s x.x.x.x -j CLASSIFY --set-class 0xz:0xy
>>
>> 10 tc rules :
>> tc class add dev imq0 parent 1:z classid 1:y htb rate 2kbit ceil 32768kbps
>>
>> I m using Intel Xeon Quad core x5570, 12GB RAM , with 8 e1000e , irq
>> affined ( 1 pair per core)
>>
>> There is NO issue / CRASH with multiple iptable rules marking to the
>> same tc rule/HTB class , i can sucessfully pass more than 200k pps /
>> 800Mbps traffic .
>>
>> But when each iptable rule is marking to seprate tc rule/HTB class and
>> when the traffic exceeds 100K pps / 20000 connections per second , we
>> hit this Out of Memory - Kernel panic condition .
>> Any help is appreciated . Do let me know if any more further
>> information is need.
>
> Hi Anand
>
> Could you give :
>
> 1) A complete stack trace / panic report
> 2) cat /proc/interrupts
> 3) ifconfig -a
> 4) cat /proc/sys/vm/min_free_kbytes
> 5) cat /proc/meminfo
>
> for each eth*
> ethtool -g eth*
Please try to reproduce without the imq patch.
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next prev parent reply other threads:[~2010-09-16 9:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-08 10:52 Kernel Panic on OOM with 10 HTB rules Anand Raj Manickam
2010-09-08 12:42 ` Eric Dumazet
2010-09-08 14:09 ` Anand Raj Manickam
2010-09-08 14:45 ` Eric Dumazet
2010-09-08 15:02 ` Krzysztof Olędzki
2010-09-08 17:25 ` Jarek Poplawski
2010-09-16 9:35 ` Patrick McHardy [this message]
2010-09-16 12:20 ` Anand Raj Manickam
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