lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20110301150758.GC10761@canuck.infradead.org>
Date:	Tue, 1 Mar 2011 10:07:58 -0500
From:	Thomas Graf <tgraf@...radead.org>
To:	Eric Dumazet <eric.dumazet@...il.com>
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?

On Tue, Mar 01, 2011 at 03:52:40PM +0100, Eric Dumazet wrote:
> 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 ?

dhclient was running. With dhclient killed:

----------------------------------------------------------------------------------------------------------------------
   PerfTop:     726 irqs/sec  kernel:99.9%  exact:  0.0% [1000Hz cpu-clock-msecs],  (all, CPU: 1)
----------------------------------------------------------------------------------------------------------------------

             samples  pcnt function                    DSO
             _______ _____ ___________________________ ___________________________________________________________

              472.00 10.6% get_rx_page_info            /lib/modules/2.6.38-rc5+/kernel/drivers/net/benet/be2net.ko
              419.00  9.4% _raw_spin_unlock_irqrestore /lib/modules/2.6.38-rc5+/build/vmlinux                     
              280.00  6.3% be_poll_rx                  /lib/modules/2.6.38-rc5+/kernel/drivers/net/benet/be2net.ko
              259.00  5.8% get_page_from_freelist      /lib/modules/2.6.38-rc5+/build/vmlinux                     
              248.00  5.6% __do_softirq                /lib/modules/2.6.38-rc5+/build/vmlinux                     
              238.00  5.4% intel_idle                  /lib/modules/2.6.38-rc5+/build/vmlinux                     
              204.00  4.6% sock_queue_rcv_skb          /lib/modules/2.6.38-rc5+/build/vmlinux                     
              189.00  4.3% __udp4_lib_lookup           /lib/modules/2.6.38-rc5+/build/vmlinux                     
              178.00  4.0% getnstimeofday              /lib/modules/2.6.38-rc5+/build/vmlinux                     
              169.00  3.8% __alloc_skb                 /lib/modules/2.6.38-rc5+/build/vmlinux                     
              144.00  3.2% read_tsc                    /lib/modules/2.6.38-rc5+/build/vmlinux                     
              143.00  3.2% sock_def_readable           /lib/modules/2.6.38-rc5+/build/vmlinux                     
              138.00  3.1% udp_queue_rcv_skb           /lib/modules/2.6.38-rc5+/build/vmlinux                     
              115.00  2.6% kmem_cache_alloc_node_trace /lib/modules/2.6.38-rc5+/build/vmlinux                     
              114.00  2.6% __netif_receive_skb         /lib/modules/2.6.38-rc5+/build/vmlinux                     
              109.00  2.5% _raw_spin_lock              /lib/modules/2.6.38-rc5+/build/vmlinux                     
              100.00  2.3% is_swiotlb_buffer           /lib/modules/2.6.38-rc5+/build/vmlinux                     
               90.00  2.0% __phys_addr                 /lib/modules/2.6.38-rc5+/build/vmlinux                     
               82.00  1.8% __udp4_lib_rcv              /lib/modules/2.6.38-rc5+/build/vmlinux                     
               80.00  1.8% kmem_cache_alloc_node       /lib/modules/2.6.38-rc5+/build/vmlinux                     
               73.00  1.6% ip_route_input_common       /lib/modules/2.6.38-rc5+/build/vmlinux                     
               60.00  1.4% memcpy                      /lib/modules/2.6.38-rc5+/build/vmlinux                     
               59.00  1.3% dma_issue_pending_all       /lib/modules/2.6.38-rc5+/build/vmlinux                     
               58.00  1.3% ip_rcv                      /lib/modules/2.6.38-rc5+/build/vmlinux                     
               57.00  1.3% be_post_rx_frags            /lib/modules/2.6.38-rc5+/kernel/drivers/net/benet/be2net.ko
               49.00  1.1% __alloc_pages_nodemask      /lib/modules/2.6.38-rc5+/build/vmlinux                     
               45.00  1.0% alloc_pages_current         /lib/modules/2.6.38-rc5+/build/vmlinux                     
               27.00  0.6% get_rps_cpu                 /lib/modules/2.6.38-rc5+/build/vmlinux                     
               23.00  0.5% napi_complete               /lib/modules/2.6.38-rc5+/build/vmlinux                     
               22.00  0.5% ip_local_deliver            /lib/modules/2.6.38-rc5+/build/vmlinux                     
               18.00  0.4% selinux_socket_sock_rcv_skb /lib/modules/2.6.38-rc5+/build/vmlinux                     
               17.00  0.4% native_read_tsc             /lib/modules/2.6.38-rc5+/build/vmlinux                     
               16.00  0.4% local_bh_enable             /lib/modules/2.6.38-rc5+/build/vmlinux                     
               16.00  0.4% next_zones_zonelist         /lib/modules/2.6.38-rc5+/build/vmlinux                     
               14.00  0.3% sk_filter                   /lib/modules/2.6.38-rc5+/build/vmlinux                     
               13.00  0.3% eth_type_trans              /lib/modules/2.6.38-rc5+/build/vmlinux                     
               10.00  0.2% __kmalloc_node_track_caller /lib/modules/2.6.38-rc5+/build/vmlinux                     
               10.00  0.2% _raw_spin_lock_irqsave      /lib/modules/2.6.38-rc5+/build/vmlinux                     
                9.00  0.2% raw_local_deliver           /lib/modules/2.6.38-rc5+/build/vmlinux                     
                8.00  0.2% __udp_queue_rcv_skb         /lib/modules/2.6.38-rc5+/build/vmlinux                     
                8.00  0.2% netif_receive_skb           /lib/modules/2.6.38-rc5+/build/vmlinux                     
                8.00  0.2% ip_queue_rcv_skb            /lib/modules/2.6.38-rc5+/build/vmlinux                     
                7.00  0.2% net_rx_action               /lib/modules/2.6.38-rc5+/build/vmlinux                     
                6.00  0.1% swiotlb_map_page            /lib/modules/2.6.38-rc5+/build/vmlinux                     
                6.00  0.1% __sk_mem_schedule           /lib/modules/2.6.38-rc5+/build/vmlinux                     
                6.00  0.1% dso__find_symbol            /usr/bin/perf                                              
                6.00  0.1% __netdev_alloc_skb          /lib/modules/2.6.38-rc5+/build/vmlinux              
--
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

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ