[Ksummit-2012-discuss] [ATTEND] zero copy networking, bridge vs macvtap, co-maintainership, pci

Stefano Stabellini stefano.stabellini at eu.citrix.com
Thu Jun 21 14:51:44 UTC 2012


On Thu, 21 Jun 2012, Michael S. Tsirkin wrote:
> Hi all,
> 
> I'd like to submit my name as someone who would like to attend the Kernel
> Summit this year.
> 
> I'd like to discuss:
>    - zero copy networking
>      Driving a hardware device from userspace/VM let you use a NIC
>      without extra data copies, today, which might improve
>      throughput/CPU by about 10% in some setups, but what is the way
>      forward for setup that won't/can't dedicate a NIC to an app/VM?
>      Work is ongoing on tracking usage of specific pages in
>      net core, this addresses one of the requirements, but how to make
>      these setups safe against malicious apps/VMs?
>      What to do about tcp restransmits etc?

We are working on zero copy networking in the context of xen
netfront/netback and we are facing similar issues.
Ian Campbell would be the best person to participate to this discussion
but he cannot make it.  However I should be able to fill in for him.


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