From: Vinicius Vianna (dsongame.com.br)
Date: Wed Apr 02 2008 - 04:52:09 CDT

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Maybe it would be easier to just upgrade your NIC's to some intel "em"
ones, it have low interrupt usage, don't know about bge on high usage.

Stuart Henderson wrote:
> On 2008-04-01, B A <openbsd-abya.ru> wrote:
>
>> We have OpenBSD acting as router+IPsec vpn concentrator.
>> Our company expanding, so I noticed what "interrupt" in top sometimes
>> jumps to 30-40%, and always about ~25% in average.
>> Server is DL360 server with bge0 and bge1.
>> So I want to upgrade to newer multicore system.
>> Can it help? Is it possible to assigne one NIC to one core,
>> and other to another?
>>
>
> It isn't possible. Look for the fastest CPUs, not the highest
> number of cores, and run a uniprocessor kernel.
>
> I'm not sure if they're valid, but I've read suggestions that
> amd64 CPUs may be better for this type of workload due to
> the larger L1 (not L2) cache.
>
> If you feel like testing, compare i386 and amd64 kernels and
> post the results, there are people who would be interested to
> know...
>
> If you currently run a pre-4.2 OS, upgrade it, you should see
> improved performance just by doing this.

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