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Waterloo researchers find a way to reduce data centre energy use by up to 30 per cent.
Changing a small section of code – approximately 30 lines – would improve Linux’s network traffic processing.
(from January, but new to me) https://uwaterloo.ca/news/media/coding-greener-internet

Coding for a greener internet | Waterloo News

Researchers from the University of Waterloo have found a way to reduce the energy use of some data centres by as much as 30 per cent.
Waterloo News

N. E. Felibata 👽 reshared this.

Johannes Berg
Johannes Berg  
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Not entirely sure what this is referring to, but the last work I saw from Joe in this area is definitely not really well described as "30 lines of code"... He gave a talk I attended at netdevconf early this year:
Greg A. Woods
Greg A. Woods  
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Yeah, more like 800 lines of changes:

https://lkml.iu.edu/2411.0/01407.html

Still pretty impressive, though I'm wary of the Linux networking stack. BSD for the win. But I wonder if a similar trick might help there too.

BTW, that article sucks in how it describes network data flows.

Linux-Kernel Archive: [PATCH net-next v4 0/7] Suspend IRQs during application busy periods

lkml.iu.edu
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