Date: Tue, 17 Sep 2019 20:26:49 -0700 From: Randall Stewart <rrs@netflix.com> To: vm finance <vm.finance2@gmail.com> Cc: Jamie Landeg-Jones <jamie@catflap.org>, Ryan Stone <rysto32@gmail.com>, freebsd-net <freebsd-net@freebsd.org> Subject: Re: BBR patches? Message-ID: <84C20AED-44B1-4673-A29E-1A6FA61D8F27@netflix.com> In-Reply-To: <CAKy-8=jwoV8=gXXUCCMARe4%2BELuqDXuYY=J9Rn7ej0536xTJvQ@mail.gmail.com> References: <CAKy-8=jUu=dbp1s7nhYBwgeh%2BiO-XY-YEnh1MJ81aYJoopVonA@mail.gmail.com> <201909091232.x89CWl4b047025@donotpassgo.dyslexicfish.net> <CAKy-8=gZ8E73PZdxb33aN=TmfigcNyTvZP4wP3M-mAy9no-v6w@mail.gmail.com> <CAFMmRNxbX5f3s0ZZk=Epr7Gu7%2Bsjat8F0TV0aX_RwoFgX0s%2ByA@mail.gmail.com> <CAKy-8=g=3LC8u_vc_3_Pfe6pgoUxpvx7N_j=xv7nRaM%2BD1Oz-A@mail.gmail.com> <D35AF884-C631-42CE-ABFD-F4AA76AA6693@netflix.com> <CAKy-8=jSdSFPJWL=cLeea-KSc=9wxR6vQTODibw7-GUh0XpCfw@mail.gmail.com> <27AD43DA-3237-490A-B3A6-C1792F9674E5@netflix.com> <CAKy-8=idqzA0-Trm%2B5gZSQs=vyXrPm40gP3AsbMf_YQj-NEHaA@mail.gmail.com> <CAKy-8=jpGvKU1khALK%2Ba5Ojp7btg7y1W%2BELtTLQaniVNtgBj3g@mail.gmail.com> <AD906F45-B083-476F-952E-3318F36BD828@netflix.com> <BCC20B79-ECEF-4D7C-AA7E-5F8A0869753A@netflix.com> <5B630235-ABC7-4122-9082-F59BCCCDE14A@netflix.com> <CAKy-8=jwoV8=gXXUCCMARe4%2BELuqDXuYY=J9Rn7ej0536xTJvQ@mail.gmail.com>
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There have been several patches pre-this one that provide the infrastructure to support BBR. Release 12.0 will *not* have these patches and will *not* compile it. I have no intention at this point in doing a MFC of this work.. so if = you want to run BBR you need to run Head R > On Sep 17, 2019, at 7:26 PM, vm finance <vm.finance2@gmail.com> wrote: >=20 > Hi Randall, >=20 > Could you please provide a pointer to the latest patch. I had applied = the one you published Sep-10. >=20 > Following is what I have done: > 1. Picked FreeBSD 12.0 RELEASE VM from osboxes.org > 2. Got VM up under VMPlayer on x86 laptop > 3. Checked out latest codebase from freebsd repo: > svn co svn://svn.freebsd.org/base/head /usr/src* > cd /usr/src; > make buildworld buildkernel =20 > [this is where make fails when patch is applied] >=20 > I could try to build with your latest patch - please send me a = pointer. >=20 > Thanks for your help! >=20 >=20 > On Tue, Sep 17, 2019 at 1:33 PM Randall Stewart <rrs@netflix.com> = wrote: > Looking at your make file log I can=E2=80=99t really tell what you are = doing. >=20 > Its not the BBR or Rack code that is blowing up=E2=80=A6=20 >=20 > Are you cross compiling? >=20 > I have done the old fashioned kernel make >=20 > i.e.=20 >=20 > cd src/sys/amd64/config > config headvm > cd ../compile/headvm >=20 > make cleandepend ; make depend; make -j3 >=20 > I have done >=20 > cd src > make buildkernel KERNCONF=3Dheadvm >=20 > And even >=20 > make buildkernel KERNCONF=3DGENERIC >=20 > to make sure that the build works without bbr. >=20 > I attach my headvm config.. >=20 > What exactly are you building and how? kernel config too please? >=20 > R >=20 >=20 >=20 >=20 > > On Sep 17, 2019, at 1:11 PM, Randall Stewart <rrs@netflix.com> = wrote: > >=20 > > looking > >=20 > > I was at 352408.. let me update and try it > >=20 > > R > >=20 > >> On Sep 17, 2019, at 1:10 PM, Randall Stewart <rrs@netflix.com> = wrote: > >>=20 > >> Hmm > >>=20 > >> Did you get the patch I updated too this am? > >>=20 > >> I have built it both with and without the bbr stack and had no = issue.. there was > >> an issue with KTLS before the update though. > >>=20 > >> I don=E2=80=99t recognize what you have below there though=E2=80=A6 > >>=20 > >> R > >>=20 > >>> On Sep 17, 2019, at 11:47 AM, vm finance <vm.finance2@gmail.com> = wrote: > >>>=20 > >>> Got it - thank you! > >>>=20 > >>> btw, I tried to build the patch but its giving an error. Following = is SVN info + make error mesg. > >>>=20 > >>> Please let me know what am I missing here? > >>>=20 > >>> Thanks! > >>>=20 > >>> #svnlite revision > >>> Path: . > >>> Working Copy Root Path: /usr/src > >>> URL: svn://svn.freebsd.org/base/head > >>> Relative URL: ^/head > >>> Repository Root: svn://svn.freebsd.org/base > >>> Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f > >>> Revision: 352436 > >>> Node Kind: directory > >>> Schedule: normal > >>> Last Changed Author: jah > >>> Last Changed Rev: 352434 > >>> Last Changed Date: 2019-09-17 03:39:31 +0000 (Tue, 17 Sep 2019) > >>>=20 > >>> root@osboxes:/usr/src # > >>>=20 > >>> -------------------------------------------- snip = ---------------------------- > >>>=20 > >>> ad_elf64_obj.llo reloc_elf64.llo disk.llo part.llo vdisk.llo = dev_net.llo bcache.llo interp_simple.llo zfs_cmd.llo > >>> rm -f .depend .depend.* GPATH GRTAGS GSYMS GTAGS > >>> =3D=3D=3D> sys (cleandir) > >>> rm -f export_syms machine x86 tcp_bbr.ko tcp_bbr.kld bbr.o = sack_filter.o rack_bbr_common.o opt_inet.h opt_inet6.h opt_ipsec.h = opt_tcpdebug.h opt_kern_tls.h > >>> rm: x86: is a directory > >>> *** Error code 1 > >>>=20 > >>> Stop. > >>> make[3]: stopped in /usr/src/sys > >>> *** Error code 1 > >>>=20 > >>> Stop. > >>> make[2]: stopped in /usr/src > >>> *** Error code 1 > >>>=20 > >>> Stop. > >>> make[1]: stopped in /usr/src > >>> *** Error code 1 > >>>=20 > >>> Stop. > >>> make: stopped in /usr/src > >>>=20 > >>>=20 > >>> On Tue, Sep 17, 2019 at 6:41 PM vm finance <vm.finance2@gmail.com> = wrote: > >>> Got it - thank you! > >>>=20 > >>> btw, I tried to build the patch but its giving an error. Following = is SVN info + make error mesg. > >>> I have also attached the entire build log...snippet is below > >>>=20 > >>> Please let me know what am I missing here? > >>>=20 > >>> Thanks! > >>>=20 > >>> #svnlite revision > >>> Path: . > >>> Working Copy Root Path: /usr/src > >>> URL: svn://svn.freebsd.org/base/head > >>> Relative URL: ^/head > >>> Repository Root: svn://svn.freebsd.org/base > >>> Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f > >>> Revision: 352436 > >>> Node Kind: directory > >>> Schedule: normal > >>> Last Changed Author: jah > >>> Last Changed Rev: 352434 > >>> Last Changed Date: 2019-09-17 03:39:31 +0000 (Tue, 17 Sep 2019) > >>>=20 > >>> root@osboxes:/usr/src # > >>>=20 > >>> -------------------------------------------- snip = ---------------------------- > >>>=20 > >>> ad_elf64_obj.llo reloc_elf64.llo disk.llo part.llo vdisk.llo = dev_net.llo bcache.llo interp_simple.llo zfs_cmd.llo > >>> rm -f .depend .depend.* GPATH GRTAGS GSYMS GTAGS > >>> =3D=3D=3D> sys (cleandir) > >>> rm -f export_syms machine x86 tcp_bbr.ko tcp_bbr.kld bbr.o = sack_filter.o rack_bbr_common.o opt_inet.h opt_inet6.h opt_ipsec.h = opt_tcpdebug.h opt_kern_tls.h > >>> rm: x86: is a directory > >>> *** Error code 1 > >>>=20 > >>> Stop. > >>> make[3]: stopped in /usr/src/sys > >>> *** Error code 1 > >>>=20 > >>> Stop. > >>> make[2]: stopped in /usr/src > >>> *** Error code 1 > >>>=20 > >>> Stop. > >>> make[1]: stopped in /usr/src > >>> *** Error code 1 > >>>=20 > >>> Stop. > >>> make: stopped in /usr/src > >>>=20 > >>>=20 > >>> On Tue, Sep 17, 2019 at 6:27 PM Randall Stewart <rrs@netflix.com> = wrote: > >>> Pacing is provided by tcp_hpts.c. The current linux patches do not = have > >>> to have fq.. they built an alternate means of doing pacing into = bbr. > >>>=20 > >>> In either case our testing has shown that our pacing is more = accurate than > >>> either fq or the internal pacer :) > >>>=20 > >>> R > >>>=20 > >>>> On Sep 17, 2019, at 11:05 AM, vm finance <vm.finance2@gmail.com> = wrote: > >>>>=20 > >>>> Thanks Randall. > >>>> I was able to apply the patch - now rebuilding the kernel. Would = update on how it goes. > >>>>=20 > >>>> BTW, is there any description on how lack of tc_fq under FreeBSD = is compensated here? > >>>> The original BBR patches on Linux show that as a must-have? Is = that functionality implemented via tcp_ratelimit.[ch]? > >>>>=20 > >>>> Any pointers to existing presentations/discussions highly = appreciated? > >>>>=20 > >>>> Thanks a lot. > >>>>=20 > >>>> On Tue, Sep 17, 2019 at 5:39 AM Randall Stewart <rrs@netflix.com> = wrote: > >>>> You should be able to compile it against the current head. I = re-doing that now (had an > >>>> issue with my machine and had to roll it back to a backup). > >>>>=20 > >>>> When I put the patch up on Sept 10th it complied with and without = BBR on whatever > >>>> was that rev.. > >>>>=20 > >>>> Looking in the commit logs that would have been around 352191 > >>>>=20 > >>>> Hope that helps > >>>>=20 > >>>> R > >>>>=20 > >>>>> On Sep 17, 2019, at 3:32 AM, vm finance <vm.finance2@gmail.com> = wrote: > >>>>>=20 > >>>>> Hi Randall, > >>>>>=20 > >>>>> Thanks for releasing BBR patch: > >>>>> https://reviews.freebsd.org/D21582#change-xcAWBif3E9Jq=20 > >>>>>=20 > >>>>> Could you please let me know what SVN/GIT label tag this is = based on? I would like to patch and experiment with it. I couldn't find = this info in the released patch. > >>>>>=20 > >>>>> Thanks a lot!=20 > >>>>>=20 > >>>>> On Tue, Sep 10, 2019 at 10:26 AM Ryan Stone <rysto32@gmail.com> = wrote: > >>>>> rrs@ has just posted the BBR patch to phabricator: > >>>>>=20 > >>>>> https://reviews.freebsd.org/D21582 > >>>>=20 > >>>> ------ > >>>> Randall Stewart > >>>> rrs@netflix.com > >>>>=20 > >>>>=20 > >>>>=20 > >>>=20 > >>> ------ > >>> Randall Stewart > >>> rrs@netflix.com > >>>=20 > >>>=20 > >>>=20 > >>=20 > >> ------ > >> Randall Stewart > >> rrs@netflix.com > >>=20 > >>=20 > >>=20 > >=20 > > ------ > > Randall Stewart > > rrs@netflix.com > >=20 > >=20 > >=20 >=20 > ------ > Randall Stewart > rrs@netflix.com >=20 >=20 >=20 ------ Randall Stewart rrs@netflix.com
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