Hi Andrew
I'm puzzled by it as well, I'm looking into, I'll get back to you.
Frank
Andrew Gallatin wrote:
> Francesco DiMambro wrote:
>> Hi Andrew
>> So you can get to line rate on those machines? Thanks for
>> letting me know, so far I've been unable but I've also spent
>> more time on x86 as well. I can now justify spending more
>> time on it.
>
> Well, line rate - epsilon, where epsilon tends to be
> a bit bigger on sparc than on x86 (9.1x vs 9.4x for
> 1500b).
>
> I was really much more interested in why you were
> seeing 1.2 for MDT vs the 2.3 I was seeing for
> LSO. I think we can factor out hardware differences
> since I assume both our NICs are capable of line
> rate for this MTU, so our NICs are mostly idle.
> So that leaves the big difference being my GLDv3/LSO
> vs your streams/MDT. And it seems like GLDv3/LSO wins
> by a factor of 2. If you have a streams/LSO driver,
> then maybe we can try to figure out exactly how
> much of that difference is streams vs GLDv3 and how
> much is MDT vs LSO.
>
> Drew
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