From: Mathias Krause <mathias.krause@secunet.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>,
Steffen Klassert <steffen.klassert@secunet.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>,
netdev@vger.kernel.org
Subject: Re: [PATCH net-next 3/3] net: allow to leave the buffer fragmented in skb_cow_data()
Date: Tue, 05 Nov 2013 15:43:10 +0100 [thread overview]
Message-ID: <527903FE.9090505@secunet.com> (raw)
In-Reply-To: <1383661995.4291.137.camel@edumazet-glaptop2.roam.corp.google.com>
On 05.11.2013 15:33, Eric Dumazet wrote:
> On Tue, 2013-11-05 at 14:54 +0100, Mathias Krause wrote:
>> Do not linearize the buffer per se but only if we're expected to expand
>> the tail. All callers can handle fragmented buffers and even expect
>> them!
>>
>> Not linearizing the buffer leads to a small performance improvement for
>> the IPsec receive path in case the network driver passed us a fragmented
>> buffer.
>>
>> With this patch applied I was able to increase the throughput of an
>> IPsec gateway from 7.12 Gbit/s to 7.28 Gbit/s.
>
> What is the driver you used ?
The device driver is ixgbe driving an Intel X520-T2. Why you're asking?
next prev parent reply other threads:[~2013-11-05 14:43 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-05 13:54 [PATCH net-next 0/3] IPsec improvements Mathias Krause
2013-11-05 13:54 ` [PATCH net-next 1/3] net: move pskb_put() to core code Mathias Krause
2013-11-05 18:33 ` Ben Hutchings
2013-11-06 9:01 ` Mathias Krause
2013-11-05 13:54 ` [PATCH net-next 2/3] caif: use pskb_put() instead of reimplementing its functionality Mathias Krause
2013-11-05 13:54 ` [PATCH net-next 3/3] net: allow to leave the buffer fragmented in skb_cow_data() Mathias Krause
2013-11-05 14:33 ` Eric Dumazet
2013-11-05 14:43 ` Mathias Krause [this message]
2013-11-06 9:30 ` Herbert Xu
2013-11-06 9:49 ` Mathias Krause
2013-11-06 9:52 ` Herbert Xu
2013-11-06 12:42 ` Mathias Krause
2013-11-06 12:48 ` Herbert Xu
2013-11-06 16:39 ` Eric Dumazet
2013-11-07 8:56 ` Mathias Krause
2013-11-07 8:55 ` Mathias Krause
2013-11-07 9:01 ` Herbert Xu
2013-11-07 10:01 ` Mathias Krause
2013-11-06 4:48 ` [PATCH net-next 0/3] IPsec improvements David Miller
2013-11-06 9:02 ` Mathias Krause
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=527903FE.9090505@secunet.com \
--to=mathias.krause@secunet.com \
--cc=davem@davemloft.net \
--cc=dmitry.tarnyagin@lockless.no \
--cc=eric.dumazet@gmail.com \
--cc=herbert@gondor.apana.org.au \
--cc=netdev@vger.kernel.org \
--cc=steffen.klassert@secunet.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.