scaling linux-based router hardware recommendations

Colin Johnston colinj at
Wed Jan 28 14:45:50 UTC 2015

qnx os based router works well with powerpc, could be pushed far higher load than intel based chips


>> That's the problem though.
>> Everyone has presentations for the most part, very few actual tools
>> that 
>> end users can just use exist.
>> On 1/28/2015 午後 08:02, Robert Bays wrote:
>>>> On Jan 27, 2015, at 8:31 AM, Jim Shankland <nanog at>
>> wrote:
>>>> My expertise, such as it ever was, is a bit stale at this point, and
>> my
>>>> figures might be a little off. But I think the general principle
>>>> applies: think about the minimum number of x86 instructions, and the
>>>> minimum number of main memory accesses, to inspect a packet header,
>> do a
>>>> routing table lookup, and enqueue the packet on an outbound
>> interface. I
>>>> can't see that ever getting reduced to the point where a generic
>> server
>>>> can handle 40-byte packets at line rate (for that matter, "line
>> rate" is
>>>> increasing a lot faster than "speed of generic server" these days).
>>> Using DPDK it’s possible to do everything stated and achieve 10Gbps
>> line rate at 64byte packets on multiple interfaces simultaneously.  Add
>> ACLs to the test setup and you can reach significant portions of 10Gbps
>> at 64byte packets and full line rate at 128bytes.
>>> Check out Venky Venkatesan’s presentation at the last DPDK Summit for
>> interesting information on pps/CPU cycles and some of the things that
>> can be done to optimize forwarding in a generic processor environment.
>> !DSPAM:54c8de34274511264773590!
> -- 
> Sent from my Android device with K-9 Mail. Please excuse my brevity.

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