2007-09-08 16:45:07

by Justin Piszcz

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Subject: In search of 10gbps cards/shootout in Linux?

There are various agencies/educational institutions doing testing but was
curious if anyone has 'found' a 10 gigabit card shootout measuring the
performance between 10 gigabit cards on the 2.6 kernel? Most of the
benchmarks are from the vendors themselves Intel/etc-- was wondering if
there were any vendor-independent benchmarks out there?

Until switches come down in price, 10gbps will be most relegated to
business/research use and therefore such benchmarks probably will be hard
to come by but I thought I'd ask..

Thanks,

Justin.



2007-09-10 04:03:17

by Bill Fink

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Subject: Re: In search of 10gbps cards/shootout in Linux?

On Sat, 8 Sep 2007, Justin Piszcz wrote:

> There are various agencies/educational institutions doing testing but was
> curious if anyone has 'found' a 10 gigabit card shootout measuring the
> performance between 10 gigabit cards on the 2.6 kernel? Most of the
> benchmarks are from the vendors themselves Intel/etc-- was wondering if
> there were any vendor-independent benchmarks out there?
>
> Until switches come down in price, 10gbps will be most relegated to
> business/research use and therefore such benchmarks probably will be hard
> to come by but I thought I'd ask..

I haven't done any comparisons with other vendor offerings, but I can
highly recommend the Myricom PCI-Express (8x) 10-GigE NICs. They only
cost about $900 and can do full unidirectional 10-GigE line rate. And
as a 10-GigE router, they can do full bidirectional 10-GigE line rate
IP forwarding. Note the choice of system/motherboard/CPU is as
important as the choice of NIC in achieving maximum performance.

Sample nuttcp test:

chance7 -> chance9 10-second TCP test:

[root@chance7 ~]# nuttcp -w10m 192.168.88.16
11817.8125 MB / 10.00 sec = 9909.8073 Mbps 100 %TX 71 %RX

The system specs are:

Tyan Thunder K8WE S2895ANRF motherboard with Nvidia nForce
Professional 2200+2050 chipset, 2 AMD Opteron 254 2.8 GHz CPUs,
4 GB PC3200 ECC REG-DDR 400 memory, and 2 PCI-Express x16 slots
(2 buses). The systems are running a 2.6.20.7 kernel.

Perhaps others can share their experiences with 10-GigE NICs.

-Bill

2007-09-15 00:37:33

by David Miller

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Subject: Re: In search of 10gbps cards/shootout in Linux?

From: Bill Fink <[email protected]>
Date: Mon, 10 Sep 2007 00:02:50 -0400

> I haven't done any comparisons with other vendor offerings, but I can
> highly recommend the Myricom PCI-Express (8x) 10-GigE NICs. They only
> cost about $900 and can do full unidirectional 10-GigE line rate. And
> as a 10-GigE router, they can do full bidirectional 10-GigE line rate
> IP forwarding. Note the choice of system/motherboard/CPU is as
> important as the choice of NIC in achieving maximum performance.

The only thing I don't like about the myri10ge cards is that
they lack VLAN offloading in hardware.

Strangely this appears to be common amongst 10gb parts :-/