Date: Fri, 24 Apr 2020 14:41:35 -0700 From: Neel Chauhan <neel@neelc.org> To: Michael Tuexen <tuexen@freebsd.org> Cc: "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net>, "Herbert J. Skuhra" <herbert@gojira.at>, freebsd-current@freebsd.org Subject: Re: How to enable tcp bbr in FreeBSD??? Message-ID: <a77036f4f212303d45620aff6a75868e@neelc.org> In-Reply-To: <26592FE0-4649-47B1-91F4-4369775B90A8@freebsd.org> References: <202004241906.03OJ62ZD086284@gndrsh.dnsmgr.net> <26592FE0-4649-47B1-91F4-4369775B90A8@freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Not OP, but would BBR work with VNET, or is that a WIP? I'm sorry if none of you are familiar with VNET. -Neel === https://www.neelc.org/ BTW: Not neel@ the committer On 2020-04-24 12:25, Michael Tuexen wrote: >> On 24. Apr 2020, at 21:06, Rodney W. Grimes >> <freebsd-rwg@gndrsh.dnsmgr.net> wrote: >> >>> On Fri, Apr 24, 2020 at 01:31:35PM +0200, Kurt Jaeger wrote: >>>> >>>> Thanks. Is BBR active automatically or is there a sysctl or >>>> socket option to activate it ? >>> >>> net.inet.tcp.cc.available: List available congestion control >>> algorithms >>> net.inet.tcp.cc.algorithm: Default congestion control algorithm >> >> Start at: >> man mod_cc > BBR is conceptually a CC, but in FreeBSD it is NOT implemented as a CC > module. > It is a TCP stack. You need to load it using > kldload tcp_bbr > and then either make it the default by > sudo sysctl net.inet.tcp.functions_default=bbr > or use the IPPROTO_TCP level socket option TCP_FUNCTION_BLK to set the > stack > to BBR. The uperf test tool allows to set the TCP stack for > measurements. > Please note that you need to compile the kernel with > makeoptions WITH_EXTRA_TCP_STACKS=1 > options TCPHPTS > > Best regards > Michael >> >> >> -- >> Rod Grimes >> rgrimes@freebsd.org >> _______________________________________________ >> freebsd-current@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-current >> To unsubscribe, send any mail to >> "freebsd-current-unsubscribe@freebsd.org" > > _______________________________________________ > freebsd-current@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to > "freebsd-current-unsubscribe@freebsd.org"
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?a77036f4f212303d45620aff6a75868e>