From: Eric Dumazet <eric.dumazet@gmail.com>
To: hadi@cyberus.ca
Cc: David Miller <davem@davemloft.net>,
xiaosuo@gmail.com, therbert@google.com, shemminger@vyatta.com,
netdev@vger.kernel.org, Eilon Greenstein <eilong@broadcom.com>,
Brian Bloniarz <bmb@athenacr.com>
Subject: Re: [PATCH net-next-2.6] net: speedup udp receive path
Date: Wed, 28 Apr 2010 16:34:03 +0200 [thread overview]
Message-ID: <1272465243.2267.76.camel@edumazet-laptop> (raw)
In-Reply-To: <1272464368.2267.72.camel@edumazet-laptop>
Le mercredi 28 avril 2010 à 16:19 +0200, Eric Dumazet a écrit :
> I forgot to say that with my previous DDOS test/bench (16 cpus trying to
> feed one udp socket), my receiver can now process 420.000 pps instead of
> 200.000 ;)
And perf top of the cpu dedicated to the thread doing the recvmsg() is :
(after patch)
----------------------------------------------------------------------------------------------------------------------------------------------
PerfTop: 1001 irqs/sec kernel:98.0% [1000Hz cycles], (all, cpu: 1)
----------------------------------------------------------------------------------------------------------------------------------------------
samples pcnt function DSO
_______ _____ _____________________________ ____________________________
5463.00 45.5% _raw_spin_lock_bh vmlinux
761.00 6.3% copy_user_generic_string vmlinux
662.00 5.5% sock_recv_ts_and_drops vmlinux
645.00 5.4% kfree vmlinux
568.00 4.7% _raw_spin_lock vmlinux
494.00 4.1% __skb_recv_datagram vmlinux
488.00 4.1% skb_copy_datagram_iovec vmlinux
467.00 3.9% __slab_free vmlinux
176.00 1.5% udp_recvmsg vmlinux
168.00 1.4% ia32_sysenter_target vmlinux
161.00 1.3% kmem_cache_free vmlinux
161.00 1.3% _raw_spin_lock_irqsave vmlinux
151.00 1.3% memcpy_toiovec vmlinux
131.00 1.1% fget_light vmlinux
130.00 1.1% sock_rfree vmlinux
104.00 0.9% inet_recvmsg vmlinux
99.00 0.8% dst_release vmlinux
98.00 0.8% skb_release_head_state vmlinux
83.00 0.7% __sk_mem_reclaim vmlinux
75.00 0.6% sys_recvfrom vmlinux
61.00 0.5% sysexit_from_sys_call vmlinux
59.00 0.5% fput vmlinux
56.00 0.5% schedule vmlinux
56.00 0.5% sock_recvmsg vmlinux
54.00 0.4% move_addr_to_user vmlinux
51.00 0.4% compat_sys_socketcall vmlinux
48.00 0.4% _raw_spin_unlock_bh vmlinux
next prev parent reply other threads:[~2010-04-28 14:34 UTC|newest]
Thread overview: 108+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-23 8:12 [PATCH v6] net: batch skb dequeueing from softnet input_pkt_queue Changli Gao
2010-04-23 9:27 ` Eric Dumazet
2010-04-23 22:02 ` jamal
2010-04-24 14:10 ` jamal
2010-04-26 14:03 ` Eric Dumazet
2010-04-26 14:55 ` Eric Dumazet
2010-04-26 21:06 ` jamal
[not found] ` <20100429174056.GA8044@gargoyle.fritz.box>
2010-04-29 17:56 ` Eric Dumazet
2010-04-29 18:10 ` OFT - reserving CPU's for networking Stephen Hemminger
2010-04-29 19:19 ` Thomas Gleixner
2010-04-29 20:02 ` Eric Dumazet
2010-04-30 18:15 ` Brian Bloniarz
2010-04-30 18:57 ` David Miller
2010-04-30 19:58 ` Thomas Gleixner
2010-04-30 21:01 ` Andi Kleen
2010-04-30 22:30 ` David Miller
2010-05-01 10:53 ` Andi Kleen
2010-05-01 22:03 ` David Miller
2010-05-01 22:58 ` Andi Kleen
2010-05-01 23:29 ` David Miller
2010-05-01 23:44 ` Ben Hutchings
2010-05-01 20:31 ` Martin Josefsson
2010-05-01 22:13 ` David Miller
[not found] ` <20100429182347.GA8512@gargoyle.fritz.box>
2010-04-29 19:12 ` [PATCH v6] net: batch skb dequeueing from softnet input_pkt_queue Eric Dumazet
[not found] ` <20100429214144.GA10663@gargoyle.fritz.box>
2010-04-30 5:25 ` Eric Dumazet
2010-04-30 23:38 ` David Miller
2010-05-01 11:00 ` Andi Kleen
2010-05-02 6:56 ` Eric Dumazet
2010-05-02 9:20 ` Andi Kleen
2010-05-02 10:54 ` Eric Dumazet
2010-05-02 14:13 ` Arjan van de Ven
2010-05-02 14:27 ` Eric Dumazet
2010-05-02 15:32 ` Eric Dumazet
2010-05-02 17:54 ` Arjan van de Ven
2010-05-02 19:22 ` Eric Dumazet
2010-05-02 22:06 ` Andi Kleen
2010-05-03 3:50 ` Arjan van de Ven
2010-05-03 5:17 ` Eric Dumazet
2010-05-03 10:22 ` Arjan van de Ven
2010-05-03 10:34 ` Andi Kleen
2010-05-03 14:09 ` Arjan van de Ven
2010-05-03 14:45 ` Brian Bloniarz
2010-05-04 1:10 ` Arjan van de Ven
2010-05-03 15:52 ` Andi Kleen
2010-05-04 1:11 ` Arjan van de Ven
2010-05-02 21:30 ` Andi Kleen
2010-05-02 15:46 ` Andi Kleen
2010-05-02 16:35 ` Eric Dumazet
2010-05-02 17:43 ` Arjan van de Ven
2010-05-02 17:47 ` Eric Dumazet
2010-05-02 21:25 ` Andi Kleen
2010-05-02 21:45 ` Eric Dumazet
2010-05-02 21:54 ` Andi Kleen
2010-05-02 22:08 ` Eric Dumazet
2010-05-03 20:15 ` jamal
2010-04-26 21:03 ` jamal
2010-04-23 10:26 ` Eric Dumazet
2010-04-27 22:08 ` David Miller
2010-04-27 22:18 ` [PATCH net-next-2.6] bnx2x: Remove two prefetch() Eric Dumazet
2010-04-27 22:19 ` David Miller
2010-04-28 13:14 ` Eilon Greenstein
2010-04-28 15:44 ` Eliezer Tamir
2010-04-28 16:53 ` David Miller
[not found] ` <w2ue8f3c3211004280842r9f2589e8qb8fd4b7933cd9756@mail.gmail.com>
2010-04-28 16:55 ` David Miller
2010-04-28 11:33 ` jamal
2010-04-28 12:33 ` Eric Dumazet
2010-04-28 12:36 ` jamal
2010-04-28 14:06 ` [PATCH net-next-2.6] net: speedup udp receive path Eric Dumazet
2010-04-28 14:19 ` Eric Dumazet
2010-04-28 14:34 ` Eric Dumazet [this message]
2010-04-28 21:36 ` David Miller
2010-04-28 22:22 ` [PATCH net-next-2.6] net: ip_queue_rcv_skb() helper Eric Dumazet
2010-04-28 22:39 ` David Miller
2010-04-28 23:44 ` [PATCH net-next-2.6] net: speedup udp receive path jamal
2010-04-29 0:00 ` jamal
2010-04-29 4:09 ` Eric Dumazet
2010-04-29 11:35 ` jamal
2010-04-29 12:12 ` Changli Gao
2010-04-29 12:45 ` Eric Dumazet
2010-04-29 13:17 ` jamal
2010-04-29 13:21 ` Eric Dumazet
2010-04-29 13:37 ` jamal
2010-04-29 13:49 ` Eric Dumazet
2010-04-29 13:56 ` jamal
2010-04-29 20:36 ` jamal
2010-04-29 21:01 ` [PATCH net-next-2.6] net: sock_def_readable() and friends RCU conversion Eric Dumazet
2010-04-30 13:55 ` Brian Bloniarz
2010-04-30 17:26 ` Eric Dumazet
2010-04-30 23:35 ` David Miller
2010-05-01 4:56 ` Eric Dumazet
2010-05-01 7:02 ` Eric Dumazet
2010-05-01 8:03 ` Eric Dumazet
2010-05-01 22:00 ` David Miller
2010-04-30 19:30 ` [PATCH net-next-2.6] net: speedup udp receive path jamal
2010-04-30 20:40 ` Eric Dumazet
2010-05-01 0:06 ` jamal
2010-05-01 5:57 ` Eric Dumazet
2010-05-01 6:14 ` Eric Dumazet
2010-05-01 10:24 ` Changli Gao
2010-05-01 10:47 ` Eric Dumazet
2010-05-01 11:29 ` jamal
2010-05-01 11:23 ` jamal
2010-05-01 11:42 ` Eric Dumazet
2010-05-01 11:56 ` jamal
2010-05-01 13:22 ` Eric Dumazet
2010-05-01 13:49 ` jamal
2010-05-03 20:10 ` jamal
2010-04-29 23:07 ` Changli Gao
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