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Message-ID: <20100502105418.7abf83a7@infradead.org> Date: Sun, 2 May 2010 10:54:18 -0700 From: Arjan van de Ven <arjan@...radead.org> To: Eric Dumazet <eric.dumazet@...il.com> Cc: Andi Kleen <andi@...stfloor.org>, David Miller <davem@...emloft.net>, hadi@...erus.ca, xiaosuo@...il.com, therbert@...gle.com, shemminger@...tta.com, netdev@...r.kernel.org, lenb@...nel.org Subject: Re: [PATCH v6] net: batch skb dequeueing from softnet input_pkt_queue On Sun, 02 May 2010 16:27:28 +0200 Eric Dumazet <eric.dumazet@...il.com> wrote: > C2 latency seems to be 64 (us ?), while C1 seems to be 1 the processor_idle module has a "latency_factor" module parameter. The default is 2, but sometimes people think 6 is a better value... .. any chance you can try that value ? Also, I'm starting to wonder if Andi's patch to use io_schedule() needs to be replaced with a net_schedule() kind of thing. The cpuidle code currently has a weight factor for IO (based on measuring/experiments), and maybe networking really needs another factor... so just having a parallel concept with a different weight could be the right answer for that. > > Your CPU supports the following C-states : C1 C2 C3 > Your BIOS reports the following C-states : C1 C2 > > C3 seems to be disabled in BIOS btw this C2 == marketing name C3, and C3 == marketing name C6 (too many translations ;-) we'll fix powertop to report the marketing name soon. -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org -- 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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