Hi, On 03/11/14 14:29, Julien Charbon wrote: > On 03/10/14 15:16, Julien Charbon wrote: >> On 23/05/14 14:06, Julien Charbon wrote: >>> On 27/02/14 11:32, Julien Charbon wrote: >>>> On 07/11/13 14:55, Julien Charbon wrote: >>>>> On Mon, 04 Nov 2013 22:21:04 +0100, Julien Charbon >>>>> <jchar...@verisign.com> wrote: >>>>>> kern/183659: TCP stack lock contention with short-lived connections >>>>>> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=183659 >>>>>> >>>>>> We are currently working on this performance improvement effort; it >>>>>> will impact only the TCP locking strategy not the TCP stack logic >>>>>> itself. > As usual, a follow-up the TCP short-lived connections performance > improvement progress: > [...] > - Second, a race condition fix with a code clean-up: > > Fix a race condition in TCP timewait between tcp_tw_2msl_reuse() and > tcp_tw_2msl_scan() > https://svnweb.freebsd.org/base?view=revision&revision=273850 > > It means that the whole set of tcp_tw_2msl_scan()-related changes could > now be MFC-ed in 10-STABLE as the KBI stability can be kept now: > > https://svnweb.freebsd.org/base?view=revision&revision=264321 > https://svnweb.freebsd.org/base?view=revision&revision=264342 > https://svnweb.freebsd.org/base?view=revision&revision=264351 > https://svnweb.freebsd.org/base?view=revision&revision=264356 > https://svnweb.freebsd.org/base?view=revision&revision=273850
The related 10-STABLE MFC commit is now here: https://svnweb.freebsd.org/base?view=revision&revision=275402 And just for interested persons below two TCP short-lived connection improvements changes only in HEAD (No plan for MFC so far): Decrease lock contention in TCP accept https://svnweb.freebsd.org/base?view=revision&revision=261242 Decrease lock contention in TCP SYN input: https://svnweb.freebsd.org/base?view=revision&revision=271119 -- Julien
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