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Date: Sat, 07 May 2011 20:42:29 +0200 From: Eric Dumazet <eric.dumazet@...il.com> To: Alex Bligh <alex@...x.org.uk> Cc: netdev@...r.kernel.org Subject: Re: Scalability of interface creation and deletion Here is my trace here for one device deletion on one 8 core machine [ 800.447012] synchronize_rcu() in 15787 us [ 800.455013] synchronize_rcu() in 7682 us [ 800.464019] rcu_barrier() in 8487 us Not that bad. $ grep RCU .config # RCU Subsystem CONFIG_TREE_RCU=y # CONFIG_PREEMPT_RCU is not set CONFIG_RCU_TRACE=y CONFIG_RCU_FANOUT=32 # CONFIG_RCU_FANOUT_EXACT is not set # CONFIG_RCU_FAST_NO_HZ is not set CONFIG_TREE_RCU_TRACE=y -- 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