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From: Ivan Voras <ivoras@freebsd.org>
Date: Tue, 11 Nov 2008 18:06:47 +0100
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Subject: Re: CPU affinity with ULE scheduler
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Archimedes Gaviola wrote:

> Hi Ivan,
> 
> Archimedes Gaviola wrote:
>> To Whom It May Concerned:
>> =20
>> Can someone explain or share about ULE scheduler (latest version 2 if
>> I'm not mistaken) dealing with CPU affinity? Is there any existing
>> benchmarks on this with FreeBSD? Because I am currently using 4BSD
> 
> Yes but not for network loads. See for example benchmarks in
> http://people.freebsd.org/~kris/scaling/7.0%20and%20beyond.pdf
> 
> [Archimedes] Ah okay, so based on my understanding with ULE scheduler
> in FreeBSD-7.0, it only scale well with userland applications
> scheduling such as database and DNS?

The problem you are seeing is probably not solvable by a better 
scheduler. There are other parts of the system that cause performance 
bottlenecks. I'd recommend you try 7-STABLE, it might help you, but it 
probably won't.