From: Eric Dumazet <eric.dumazet@gmail.com>
To: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Alexander Duyck <alexander.h.duyck@redhat.com>,
David Laight <David.Laight@ACULAB.COM>,
"Jiafei.Pan@freescale.com" <Jiafei.Pan@freescale.com>,
David Miller <davem@davemloft.net>,
"jkosina@suse.cz" <jkosina@suse.cz>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"LeoLi@freescale.com" <LeoLi@freescale.com>,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>
Subject: Re: [PATCH] net: use hardware buffer pool to allocate skb
Date: Fri, 17 Oct 2014 12:51:55 -0700 [thread overview]
Message-ID: <1413575515.27176.10.camel@edumazet-glaptop2.roam.corp.google.com> (raw)
In-Reply-To: <54417044.5090602@gmail.com>
On Fri, 2014-10-17 at 12:38 -0700, Alexander Duyck wrote:
> That's not what I am saying, but there is a trade-off we always have to
> take into account. Cutting memory overhead will likely have an impact
> on performance. I would like to make the best informed trade-off in
> that regard rather than just assuming worst case always for the driver.
It seems you misunderstood me. You believe I suggested doing another
allocation strategy in the drivers.
This was not the case.
This allocation strategy is wonderful. I repeat : This is wonderful.
We only have to make sure we do not fool memory management layers, when
they do not understand where the memory is.
Apparently you think it is hard, while it really is not.
next prev parent reply other threads:[~2014-10-17 19:51 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-15 3:26 [PATCH] net: use hardware buffer pool to allocate skb Pan Jiafei
2014-10-15 4:15 ` Eric Dumazet
2014-10-15 4:26 ` David Miller
2014-10-15 5:43 ` Jiafei.Pan
2014-10-15 9:15 ` Eric Dumazet
2014-10-15 4:25 ` David Miller
2014-10-15 5:34 ` Jiafei.Pan
2014-10-15 9:15 ` Eric Dumazet
2014-10-16 2:17 ` Jiafei.Pan
2014-10-16 4:15 ` Eric Dumazet
2014-10-16 5:15 ` Jiafei.Pan
2014-10-16 15:28 ` Alexander Duyck
2014-10-16 16:57 ` Eric Dumazet
2014-10-16 17:10 ` Alexander Duyck
2014-10-16 17:45 ` Eric Dumazet
2014-10-16 18:20 ` Alexander Duyck
2014-10-16 21:40 ` Eric Dumazet
2014-10-16 22:12 ` Alexander Duyck
2014-10-17 9:11 ` David Laight
2014-10-17 14:40 ` Alexander Duyck
2014-10-17 16:55 ` Eric Dumazet
2014-10-17 18:28 ` Alexander Duyck
2014-10-17 18:53 ` Eric Dumazet
2014-10-18 0:26 ` Eric Dumazet
2014-10-17 19:02 ` Eric Dumazet
2014-10-17 19:38 ` Alexander Duyck
2014-10-17 19:51 ` Eric Dumazet [this message]
2014-10-17 22:13 ` Alexander Duyck
2014-10-17 2:35 ` Jiafei.Pan
2014-10-17 14:05 ` Eric Dumazet
2014-10-17 14:12 ` Alexander Duyck
2014-10-16 2:17 ` Jiafei.Pan
2014-10-15 15:51 ` David Miller
2014-10-15 4:59 ` Oliver Hartkopp
2014-10-15 5:47 ` Jiafei.Pan
2014-10-15 8:57 ` David Laight
2014-10-15 9:33 ` Stephen Hemminger
2014-10-16 2:30 ` Jiafei.Pan
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=1413575515.27176.10.camel@edumazet-glaptop2.roam.corp.google.com \
--to=eric.dumazet@gmail.com \
--cc=David.Laight@ACULAB.COM \
--cc=Jiafei.Pan@freescale.com \
--cc=LeoLi@freescale.com \
--cc=alexander.duyck@gmail.com \
--cc=alexander.h.duyck@redhat.com \
--cc=davem@davemloft.net \
--cc=jkosina@suse.cz \
--cc=linux-doc@vger.kernel.org \
--cc=netdev@vger.kernel.org \
/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).