From: jamal <hadi@cyberus.ca>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Changli Gao <xiaosuo@gmail.com>,
David Miller <davem@davemloft.net>,
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: Sat, 01 May 2010 07:23:34 -0400 [thread overview]
Message-ID: <1272713014.14499.21.camel@bigi> (raw)
In-Reply-To: <1272693424.2230.75.camel@edumazet-laptop>
On Sat, 2010-05-01 at 07:57 +0200, Eric Dumazet wrote:
> I changed your program a bit to use EV_PERSIST, (to avoid epoll_ctl()
> overhead for each packet...)
Thats a different test case then ;-> You can also get rid of the timer
(I doubt it will show much difference in results) - I have it in there
because it i am trying to replicate what i saw causing the regression.
> RPS off : 220.000 pps
>
> RPS on (ee mask) : 700.000 pps (with a slightly modified tg3 driver)
> 96% of delivered packets
>
That's a very very huge gap. What were the numbers before you changed to
EV_PERSIST?
Note: i did not add any of your other patches for dst refcnt, sockets
etc. Were you running with those patches in these tests? I will try the
next opportunity i get to have latest kernel + those patches.
> This is on tg3 adapter, and tg3 has copybreak feature : small packets
> are copied into skb of the right size.
Ok, so the driver tuning is also important then (and it shows in the
profile).
cheers,
jamal
next prev parent reply other threads:[~2010-05-01 11:23 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
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 [this message]
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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