From: Changli Gao <xiaosuo@gmail.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: hadi@cyberus.ca, Rick Jones <rick.jones2@hp.com>,
David Miller <davem@davemloft.net>,
therbert@google.com, netdev@vger.kernel.org, robert@herjulf.net,
andi@firstfloor.org
Subject: Re: rps perfomance WAS(Re: rps: question
Date: Thu, 22 Apr 2010 09:27:06 +0800 [thread overview]
Message-ID: <y2p412e6f7f1004211827x3e456588jb8e7ad780b891417@mail.gmail.com> (raw)
In-Reply-To: <1271876480.7895.3106.camel@edumazet-laptop>
On Thu, Apr 22, 2010 at 3:01 AM, Eric Dumazet <eric.dumazet@gmail.com> wrote:
>
> Thanks a lot Jamal, this is really useful
>
> Drawback of using a fixed src ip from your generator is that all flows
> share the same struct dst entry on SUT. This might explain some glitches
> you noticed (ip_route_input + ip_rcv at high level on slave/application
> cpus)
> Also note your test is one way. If some data was replied we would see
> much use of the 'flows'
>
> I notice epoll_ctl() used a lot, are you re-arming epoll each time you
> receive a datagram ?
>
> I see slave/application cpus hit _raw_spin_lock_irqsave() and
> _raw_spin_unlock_irqrestore().
>
> Maybe a ring buffer could help (instead of a double linked queue) for
> backlog, or the double queue trick, if Changli wants to respin his
> patch.
>
>
OK, I'll post a new patch against the current tree, so Jamal can have
a try. I am sorry, but I don't have a suitable computer for benchmark.
--
Regards，
Changli Gao(xiaosuo@gmail.com)
next prev parent reply other threads:[~2010-04-22 1:27 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-07 18:42 rps: question jamal
2010-02-08 5:58 ` Tom Herbert
2010-02-08 15:09 ` jamal
2010-04-14 11:53 ` rps perfomance WAS(Re: " jamal
2010-04-14 17:31 ` Tom Herbert
2010-04-14 18:04 ` Eric Dumazet
2010-04-14 18:53 ` jamal
2010-04-14 19:44 ` Stephen Hemminger
2010-04-14 19:58 ` Eric Dumazet
2010-04-15 8:51 ` David Miller
2010-04-14 20:22 ` jamal
2010-04-14 20:27 ` Eric Dumazet
2010-04-14 20:38 ` jamal
2010-04-14 20:45 ` Tom Herbert
2010-04-14 20:57 ` Eric Dumazet
2010-04-14 22:51 ` Changli Gao
2010-04-14 23:02 ` Stephen Hemminger
2010-04-15 2:40 ` Eric Dumazet
2010-04-15 2:50 ` Changli Gao
2010-04-15 8:57 ` David Miller
2010-04-15 12:10 ` jamal
2010-04-15 12:32 ` Changli Gao
2010-04-15 12:50 ` jamal
2010-04-15 23:51 ` Changli Gao
2010-04-15 8:51 ` David Miller
2010-04-14 20:34 ` Andi Kleen
2010-04-15 8:50 ` David Miller
2010-04-15 8:48 ` David Miller
2010-04-15 11:55 ` jamal
2010-04-15 16:41 ` Rick Jones
2010-04-15 20:16 ` jamal
2010-04-15 20:25 ` Rick Jones
2010-04-15 23:56 ` Changli Gao
2010-04-16 5:18 ` Eric Dumazet
2010-04-16 6:02 ` Changli Gao
2010-04-16 6:28 ` Tom Herbert
2010-04-16 6:32 ` Eric Dumazet
2010-04-16 13:42 ` jamal
2010-04-16 7:15 ` Andi Kleen
2010-04-16 13:27 ` jamal
2010-04-16 13:37 ` Andi Kleen
2010-04-16 13:58 ` jamal
2010-04-16 13:21 ` jamal
2010-04-16 13:34 ` Changli Gao
2010-04-16 13:49 ` jamal
2010-04-16 14:10 ` Changli Gao
2010-04-16 14:43 ` jamal
2010-04-16 14:58 ` Changli Gao
2010-04-19 12:48 ` jamal
2010-04-17 7:35 ` Eric Dumazet
2010-04-17 8:43 ` Tom Herbert
2010-04-17 9:23 ` Eric Dumazet
2010-04-17 14:27 ` Eric Dumazet
2010-04-17 17:26 ` Tom Herbert
2010-04-17 14:17 ` [PATCH net-next-2.6] net: remove time limit in process_backlog() Eric Dumazet
2010-04-18 9:36 ` David Miller
2010-04-17 17:31 ` rps perfomance WAS(Re: rps: question jamal
2010-04-18 9:39 ` Eric Dumazet
2010-04-18 11:34 ` Eric Dumazet
2010-04-19 2:09 ` jamal
2010-04-19 9:37 ` [RFC] rps: shortcut net_rps_action() Eric Dumazet
2010-04-19 9:48 ` Changli Gao
2010-04-19 12:14 ` Eric Dumazet
2010-04-19 12:28 ` Changli Gao
2010-04-19 13:27 ` Eric Dumazet
2010-04-19 14:22 ` Eric Dumazet
2010-04-19 15:07 ` [PATCH net-next-2.6] " Eric Dumazet
2010-04-19 16:02 ` Tom Herbert
2010-04-19 20:21 ` David Miller
2010-04-20 7:17 ` [PATCH net-next-2.6] rps: cleanups Eric Dumazet
2010-04-20 8:18 ` David Miller
2010-04-19 23:56 ` [PATCH net-next-2.6] rps: shortcut net_rps_action() Changli Gao
2010-04-20 0:32 ` Changli Gao
2010-04-20 5:55 ` Eric Dumazet
2010-04-20 12:02 ` rps perfomance WAS(Re: rps: question jamal
2010-04-20 13:13 ` Eric Dumazet
[not found] ` <1271853570.4032.21.camel@bigi>
2010-04-21 19:01 ` Eric Dumazet
2010-04-22 1:27 ` Changli Gao [this message]
2010-04-22 12:12 ` jamal
2010-04-25 2:31 ` Changli Gao
2010-04-26 11:35 ` jamal
2010-04-26 13:35 ` Changli Gao
2010-04-21 21:53 ` Rick Jones
2010-04-16 15:57 ` Tom Herbert
2010-04-14 18:53 ` Stephen Hemminger
2010-04-15 8:42 ` David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=y2p412e6f7f1004211827x3e456588jb8e7ad780b891417@mail.gmail.com \
--to=xiaosuo@gmail.com \
--cc=andi@firstfloor.org \
--cc=davem@davemloft.net \
--cc=eric.dumazet@gmail.com \
--cc=hadi@cyberus.ca \
--cc=netdev@vger.kernel.org \
--cc=rick.jones2@hp.com \
--cc=robert@herjulf.net \
--cc=therbert@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).