[c-nsp] C6509 Fabric Switch Capacity

Azher Mughal azher at hep.caltech.edu
Wed Jan 13 10:31:04 EST 2016

:)  I agree, performance will vary for smaller packet sizes.


On 1/13/2016 7:24 AM, Simon Lockhart wrote:
> On Wed Jan 13, 2016 at 07:10:09AM -0800, Azher Mughal wrote:
>> For WS 6704 (with DFC3B), I was able to go close to 9Gbps per port
>> across the bus when using Iperf and jumbo frames. Single port on each of
>> the bus gives you line rate of 9.9Gbps.
> Sounds like you come from the Cisco camp of performance testing :)
> Yes, under ideal conditions you can probably get close to linerate on them,
> but stick general Internet traffic through them, and you won't. I believe it's
> a limitation on PPS, so jumbo frames are what let you fill the ports.
> Simon

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