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Date: Sun, 24 May 2009 15:21:50 -0400 From: Benjamin LaHaise <bcrl@...et.ca> To: netdev@...r.kernel.org Subject: regression: unregister_netdev() unusably slow Hi folks, I just ran a few L2TP tests against 2.6.30-rc7, and it looks like network device deletion has become unusably slow. At least in 2.6.27.10, deleting 1000 network interfaces takes less than 2 seconds of real time. The same test run under 2.6.30-rc7 is taking hundreds of seconds to delete 1000 interfaces at a rate of about 5 per second. The interfaces all share the same local ip address, but each have a single route to a unique client ip address. This is a fairly reasonable use-case, as a single L2TP daemon can be terminating thousands of client connections on a single tunnel, and a tunnel flap will require tearing down all these interfaces. I'll work on bisecting it, but if someone has any ideas of the source, I'd appreciate hearing about it. -ben -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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