Packet steering/SMP

John Baldwin jhb at
Tue Aug 3 13:57:09 UTC 2010

On Monday, August 02, 2010 2:23:57 pm Brett Glass wrote:
> The article at
> describes SMP optimizations to the Linux kernel (the article 
> mistakenly calls them "protocols," but they're not) which steer the 
> processing of incoming network packets to the CPU core that is 
> running the process for which they're destined. (Doing this 
> requires code which straddles network layers in interesting ways.) 
> The article claims that these optimizations are Google's invention, 
> though they simply seem like a common sense way to make the best 
> use of CPU cache.
> The article claims dramatic performance improvements due to this 
> optimization. Anything like this in the works for FreeBSD?

You should talk to Robert Watson, he is working on something similar.

John Baldwin

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