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Groups > comp.os.linux.networking > #460

Re: IPv6 Connection Tracking Excess CPU usage

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Hello,

Jorgen Grahn a écrit :
>> On 07/29/2011 02:18 AM, Washington Ratso wrote:
>>> I am running Linux 2.6.26 on my board.  When I enable IPv6 connection
>>> tracking support, i.e., CONFIG_NF_CONNTRACK_IPV6=y, and send 3
>>> megabits of data to the board with iperf, the CPU usage according to
>>> top for events/0 goes up to 99-100%.  Without CONFIG_NF_CONNTRACK_IPV6
>>> enabled, the CPU usage for events/0 is only 17-18%.
> 
> Is that by just *including* CONFIG_NF_CONNTRACK_IPV6 in your kernel,
> or do you also *enable* it (using iptables, I suppose)?

If CONFIG_NF_CONNTRACK_IPV6=y (built into the kernel, not as a module)
then IPv6 conntrack is enabled. No need to use ip6tables.

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Thread

IPv6 Connection Tracking Excess CPU usage Washington Ratso <jobhunts02@aol.com> - 2011-07-28 17:18 -0700
  Re: IPv6 Connection Tracking Excess CPU usage Stephane Le Men <slm@nullpart.fr> - 2011-07-30 07:35 +0200
    Re: IPv6 Connection Tracking Excess CPU usage Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-07-30 07:19 +0000
      Re: IPv6 Connection Tracking Excess CPU usage Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2011-07-30 13:18 +0200
      Re: IPv6 Connection Tracking Excess CPU usage Rick Jones <rick.jones2@hp.com> - 2011-08-01 16:34 +0000

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