How a 20-year-old kernel feature helped USDS improve VA’s network

Re:How a 20-year-old kernel feature helped USDS improve VA’s... by sydney6 on Friday June 30, 2017 @04:59PM (#14673577)

Would this (disabling TCP Timestamps) affect TCP Performance with other OSes in regard of their respective TCP Window Auto Scaling Implementations? I believe Linux uses DRS (1) and doesn't necessarily depend on TCP Option TS for TCP Window Auto Scaling and FreeBSD has got this (2) commit ~ 2 Months ago.

(1) http://public.lanl.gov/radiant/pubs.html#DRS (2) https://svnweb.freebsd.org/base?view=revision&revision=31667...

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Re:How a 20-year-old kernel feature helped USDS improve VA’s... by askldjd on Friday June 30, 2017 @05:17PM (#14673654)

Yup, it would. Disabling the TS option was just a stopgap measure to make our deployments stable for the time being.

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Re:How a 20-year-old kernel feature helped USDS improve VA’s... by sydney6 on Friday June 30, 2017 @05:35PM (#14673731)

Of course, setting priorities.. I was just wondering how different OSes would behave under these circumstances. For instance AWS S3 also doesn't support TCP Timestamps and this had a rather big impact on e.g. FreeBSDs TCP Performance until recently.

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