From: Tom Herbert <therbert@google.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Alexander Duyck <alexander.h.duyck@intel.com>,
Brattain <ross.b.brattain@intel.com>,
Jeff Kirsher <jeffrey.t.kirsher@intel.com>,
netdev <netdev@vger.kernel.org>
Subject: Re: [RFC] ixgbe: is DCA really that good ?
Date: Wed, 6 Apr 2011 08:24:16 -0700 [thread overview]
Message-ID: <BANLkTimSRhuVTcOX-EHx74_y3pnDdCRi8A@mail.gmail.com> (raw)
In-Reply-To: <1302097444.3209.85.camel@edumazet-laptop>
On Wed, Apr 6, 2011 at 6:44 AM, Eric Dumazet <eric.dumazet@gmail.com> wrote:
> Hi guys
>
>
> In a forwarding [or RPS/RFS] setup, why should we populate cpu caches
> with full frames content ? We only need first cache line to perform
> routing [or RPS/RFS] decision.
>
DCA + accelerated RFS might make good. But I agree that it should be
configurable.
> -> DCA should be a knob (ethtool ?) that an admin can switch off and on,
> port by port, not a CONFIG_IXGBE_DCA thing.
>
> Thanks
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe netdev" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
next prev parent reply other threads:[~2011-04-06 15:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-06 13:44 [RFC] ixgbe: is DCA really that good ? Eric Dumazet
2011-04-06 15:24 ` Tom Herbert [this message]
2011-04-06 16:14 ` Eric Dumazet
2011-04-06 17:05 ` Alexander Duyck
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=BANLkTimSRhuVTcOX-EHx74_y3pnDdCRi8A@mail.gmail.com \
--to=therbert@google.com \
--cc=alexander.h.duyck@intel.com \
--cc=eric.dumazet@gmail.com \
--cc=jeffrey.t.kirsher@intel.com \
--cc=netdev@vger.kernel.org \
--cc=ross.b.brattain@intel.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).