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Date: Thu, 08 Oct 2009 14:13:22 +0200 From: Eric Dumazet <eric.dumazet@...il.com> To: Jarek Poplawski <jarkao2@...il.com> CC: "David S. Miller" <davem@...emloft.net>, Patrick McHardy <kaber@...sh.net>, Linux Netdev List <netdev@...r.kernel.org> Subject: Re: [RFC] multiqueue changes Jarek Poplawski a écrit : > On Thu, Oct 08, 2009 at 09:03:44AM +0000, Jarek Poplawski wrote: > ... >> num_tx_queues. But it seems we should rather use more often >> real_num_tx_queue in schedulers code like dumps and maybe more >> (like e.g. sch_multiq does). > > ...i.e. probably everywhere between dev_activate and dev_deactivate > all qdisc operations could use real_num_tx_queues (including a test > like: netif_is_real_multique), unless I miss something. I am not sure David intent was being able to dynamically adjust real_num_tx_queue between 1 and num_tx_queue. For low/moderate traffic, its better to use one queue, to lower IRQ activations, and let some cpus sleep longer. -- 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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