Handling 100.000 packets/sec or more

[Eli Dart]

In reply to David Gilbert <dgilbert at dclg.ca> :

> In our experience, switch to fxp ethernet cards, test several
> motherboards and enable polling.
> 
> fxp and em cards appear to have the best performance ... outrunning
> other cards by a fair margin.

Hmmm....we've been using SysKonnect (older ones -- SK-9843 chipset) 
and have been pretty happy.  These tend to have a lot more packet 
memory than most other cards (this means that interrupt coalescence 
can buy you more).  Of course, these don't currently support 
polling..... :(

> 
> Different motherboards have several orders of magnitude different
> performance with the same processor.

Don't suppose you'd be willing to post your motherboard test results? 
We have found that SuperMicro motherboards (ServerWorks chipsets) are 
pretty good, but we don't have the resources to do exhaustive testing 
of all motherboards out there.

		--eli


> 
> Polling (as others have mentioned) roughly doubles the throughput of a
> server  and eliminates live lock.
> 
> Dave.
> 
> -- 
> ============================================================================
> |David Gilbert, Independent Contractor.       | Two things can only be     |
> |Mail:       dave at daveg.ca                    |  equal if and only if they |
> |http://daveg.ca                              |   are precisely opposite.  |
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