netdev - Re: SO_REUSEPORT - can it be done in kernel?

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Date:	Tue, 01 Mar 2011 15:52:40 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Thomas Graf <tgraf@...radead.org>
Cc:	Herbert Xu <herbert@...dor.apana.org.au>,
	David Miller <davem@...emloft.net>, rick.jones2@...com,
	therbert@...gle.com, wsommerfeld@...gle.com,
	daniel.baluta@...il.com, netdev@...r.kernel.org
Subject: Re: SO_REUSEPORT - can it be done in kernel?

Le mardi 01 mars 2011 à 09:30 -0500, Thomas Graf a écrit :
> On Tue, Mar 01, 2011 at 09:22:35AM -0500, Thomas Graf wrote:
> > On Tue, Mar 01, 2011 at 03:06:59PM +0100, Eric Dumazet wrote:
> > > Would be nice to cpu affine named to _not_ run on CPU11, just to
> > > specialize it for TX completions and have softirq time percentage and
> > > "perf top -C 11 " results
> 
> CPU 1 isolated as well (named running with mask 0,2-10)
> 
> ----------------------------------------------------------------------------------------------------------------------
>    PerfTop:     580 irqs/sec  kernel:100.0%  exact:  0.0% [1000Hz cpu-clock-msecs],  (all, CPU: 1)
> ----------------------------------------------------------------------------------------------------------------------
> 
>              samples  pcnt function                    DSO
>              _______ _____ ___________________________ ___________________________________________________________
> 
>               283.00  9.2% get_rx_page_info            /lib/modules/2.6.38-rc5+/kernel/drivers/net/benet/be2net.ko
>               256.00  8.4% _raw_spin_unlock_irqrestore /lib/modules/2.6.38-rc5+/build/vmlinux                     
>               190.00  6.2% be_poll_rx                  /lib/modules/2.6.38-rc5+/kernel/drivers/net/benet/be2net.ko
>               182.00  5.9% get_page_from_freelist      /lib/modules/2.6.38-rc5+/build/vmlinux                     
>               157.00  5.1% intel_idle                  /lib/modules/2.6.38-rc5+/build/vmlinux                     
>               143.00  4.7% __do_softirq                /lib/modules/2.6.38-rc5+/build/vmlinux                     
>               133.00  4.3% sock_queue_rcv_skb          /lib/modules/2.6.38-rc5+/build/vmlinux                     
>               133.00  4.3% __udp4_lib_lookup           /lib/modules/2.6.38-rc5+/build/vmlinux                     
>               131.00  4.3% sk_run_filter               /lib/modules/2.6.38-rc5+/build/vmlinux   

sk_run_filter ? Do you have a packet filter running ?


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