From: Hannes Frederic Sowa <hannes@redhat•com>
To: "cristian.bercaru@freescale•com" <cristian.bercaru@freescale•com>
Cc: "netdev@vger•kernel.org" <netdev@vger•kernel.org>,
"R89243@freescale•com" <R89243@freescale•com>,
Madalin-Cristian Bucur <madalin.bucur@freescale•com>,
"Razvan.Ungureanu@freescale•com" <Razvan.Ungureanu@freescale•com>
Subject: Re: atomic operations bottleneck in the IPv6 stack
Date: Wed, 10 Dec 2014 18:16:03 +0100 [thread overview]
Message-ID: <1418231763.24395.2.camel@redhat.com> (raw)
In-Reply-To: <SN2PR03MB079DA7799199CD98C52B5389E620@SN2PR03MB079.namprd03.prod.outlook.com>
On Mi, 2014-12-10 at 16:56 +0000, cristian.bercaru@freescale•com wrote:
>
> It seems to me that the atomic operations on the IPv6 forwarding path
> are a bottleneck and they are not scalable with the number of cores.
> Am I right? What improvements can be brought to the IPv6 kernel code
> to make it less dependent of atomic operations/variables?
For a starter, something like the following commit:
commit d26b3a7c4b3b26319f18bb645de93eba8f4bdcd5
Author: Eric Dumazet <edumazet@google•com>
Date: Tue Jul 31 05:45:30 2012 +0000
ipv4: percpu nh_rth_output cache
Bye,
Hannes
next prev parent reply other threads:[~2014-12-10 17:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-10 16:56 atomic operations bottleneck in the IPv6 stack cristian.bercaru
2014-12-10 17:16 ` Hannes Frederic Sowa [this message]
2014-12-10 17:58 ` Hannes Frederic Sowa
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