From: Aaro Koskinen <aaro.koskinen@iki.fi>
To: David Daney <ddaney@caviumnetworks.com>
Cc: driverdev-devel <devel@driverdev.osuosl.org>,
linux-mips <linux-mips@linux-mips.org>,
Aaro Koskinen <aaro.koskinen@nokia.com>,
netdev <netdev@vger.kernel.org>
Subject: Re: Improving OCTEON II 10G Ethernet performance
Date: Thu, 25 Aug 2016 21:22:10 +0300 [thread overview]
Message-ID: <20160825182210.GE12169@raspberrypi.musicnaut.iki.fi> (raw)
In-Reply-To: <57BF21C7.5070709@caviumnetworks.com>
Hi,
On Thu, Aug 25, 2016 at 09:50:15AM -0700, David Daney wrote:
> Ideally we would configure the packet classifiers on the RX side to create
> multiple RX queues based on a hash of the TCP 5-tuple, and handle each queue
> with a single NAPI instance. That should result in better performance while
> maintaining packet ordering.
Would this need anything else than reprogramming CVMX_PIP_PRT_TAGX, and
eliminating the global pow_receive_group and creating multiple NAPI instances
and registering IRQ handlers?
In the Yocto tree, the CVMX_PIP_PRT_TAGX register values are actually
documented:
http://git.yoctoproject.org/cgit/cgit.cgi/linux-yocto-contrib/tree/arch/mips/include/asm/octeon/cvmx-pip-defs.h?h=apaliwal/octeon#n3737
A.
WARNING: multiple messages have this Message-ID (diff)
From: Aaro Koskinen <aaro.koskinen@iki.fi>
To: David Daney <ddaney@caviumnetworks.com>
Cc: Ed Swierk <eswierk@skyportsystems.com>,
linux-mips <linux-mips@linux-mips.org>,
driverdev-devel <devel@driverdev.osuosl.org>,
netdev <netdev@vger.kernel.org>,
Aaro Koskinen <aaro.koskinen@nokia.com>
Subject: Re: Improving OCTEON II 10G Ethernet performance
Date: Thu, 25 Aug 2016 21:22:10 +0300 [thread overview]
Message-ID: <20160825182210.GE12169@raspberrypi.musicnaut.iki.fi> (raw)
In-Reply-To: <57BF21C7.5070709@caviumnetworks.com>
Hi,
On Thu, Aug 25, 2016 at 09:50:15AM -0700, David Daney wrote:
> Ideally we would configure the packet classifiers on the RX side to create
> multiple RX queues based on a hash of the TCP 5-tuple, and handle each queue
> with a single NAPI instance. That should result in better performance while
> maintaining packet ordering.
Would this need anything else than reprogramming CVMX_PIP_PRT_TAGX, and
eliminating the global pow_receive_group and creating multiple NAPI instances
and registering IRQ handlers?
In the Yocto tree, the CVMX_PIP_PRT_TAGX register values are actually
documented:
http://git.yoctoproject.org/cgit/cgit.cgi/linux-yocto-contrib/tree/arch/mips/include/asm/octeon/cvmx-pip-defs.h?h=apaliwal/octeon#n3737
A.
next prev parent reply other threads:[~2016-08-25 18:22 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-25 1:29 Improving OCTEON II 10G Ethernet performance Ed Swierk
2016-08-25 16:50 ` David Daney
2016-08-25 18:22 ` Aaro Koskinen [this message]
2016-08-25 18:22 ` Aaro Koskinen
2016-08-25 20:11 ` David Daney
2016-08-25 20:11 ` David Daney
2016-08-25 21:18 ` Aaro Koskinen
2016-08-25 21:18 ` Aaro Koskinen
2016-08-25 22:26 ` David Daney
2016-08-25 22:26 ` David Daney
2016-08-25 17:32 ` Aaro Koskinen
2016-08-25 17:32 ` Aaro Koskinen
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