Re: [PATCH net-next 00/15] tcp: TCP TS option use 1 ms clock

2017-05-17 Thread David Miller
From: Eric Dumazet Date: Tue, 16 May 2017 13:59:59 -0700 > TCP Timestamps option is defined in RFC 7323 > > Traditionally on linux, it has been tied to the internal > 'jiffy' variable, because it had been a cheap and good enough > generator. > > Unfortunately some distros use HZ=250 or even HZ=

[PATCH net-next 00/15] tcp: TCP TS option use 1 ms clock

2017-05-16 Thread Eric Dumazet
TCP Timestamps option is defined in RFC 7323 Traditionally on linux, it has been tied to the internal 'jiffy' variable, because it had been a cheap and good enough generator. Unfortunately some distros use HZ=250 or even HZ=100 leading to not very useful TCP timestamps. For TCP flows in the DC,