Messages in this thread |  | | | Date | Tue, 13 Sep 2005 09:26:59 -0700 | | From | Stephen Hemminger <> | | Subject | Re: [patch 7/11] net: Use bigrefs for net_device.refcount |
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On Tue, 13 Sep 2005 09:10:12 -0700 Ravikiran G Thirumalai <kiran@scalex86.org> wrote:
> The net_device has a refcnt used to keep track of it's uses. > This is used at the time of unregistering the network device > (module unloading ..) (see netdev_wait_allrefs) . > For loopback_dev , this refcnt increment/decrement is causing > unnecessary traffic on the interlink for NUMA system > affecting it's performance. This patch improves tbench numbers by 6% on a > 8way x86 Xeon (x445). >
Since when is bringing a network device up/down performance critical? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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