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Date: Fri, 29 Aug 2008 17:15:20 +1000 From: Herbert Xu <herbert@...dor.apana.org.au> To: buytenh@...tstofly.org (Lennert Buytenhek) Cc: davem@...emloft.net, netdev@...r.kernel.org, dale@...nsworth.org, nico@....org Subject: Re: cpu utilisation improvement when not doing netif_tx_{stop,wake}_queue() Lennert Buytenhek <buytenh@...tstofly.org> wrote: > > I.e. transmitting wire speed gigabit over a single TCP session takes > around 90% CPU time (measured with cyclesoak) if I have the TX queue > flow control enabled, but only 70% if I rip the TX queue flow control > out. (This is on a relatively underpowered ARM box.) How many cores and how many queues? Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- 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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