11 September 2018

40/100G networks are here! (but also have been for a while...)

So hearing that RAL now has a 100G link into JANET started me thinking again about what kind of network tuning might be needed.. A quick bit of using a popular search engine (and knowledge that their are certain individuals I have found that can provide useful info on this area, I found:

https://fasterdata.es.net/host-tuning/100g-tuning/

https://www.es.net/assets/Uploads/100G-Tuning-TechEx2016.tierney.pdf

What surprised me (and shouldn't have) was how old these posts were! Of particular interest has been that there really is a benefit to get diskservers upgraded to SL/CENTOS 7 rather than 6. I also did not know there was a 2G limit for TCP window size.

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