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Groups > comp.os.linux.networking > #457
| From | Stephane Le Men <slm@nullpart.fr> |
|---|---|
| Newsgroups | comp.os.linux.networking |
| Subject | Re: IPv6 Connection Tracking Excess CPU usage |
| Date | 2011-07-30 07:35 +0200 |
| Organization | Aioe.org NNTP Server |
| Message-ID | <j105eu$sob$1@speranza.aioe.org> (permalink) |
| References | <a4afc1e9-9f34-44f5-bc55-aa57c3bc2494@r11g2000prd.googlegroups.com> |
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%. That fact exhibits the proof that the CONFIG_NF_CONNTRACK_IPV6 kernel code has low performance. It is not an easy job to write a good code to perform connection tracking. > Has anyone else seen this issue? Is there a fix? Yes, but not with that flag. The fix is to update your kernel to the last version, and to hope kernel developers wrote a code with a better performance.
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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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