Date: Thu, 17 Oct 2024 05:03:20 -0400 From: Cheng Cui <cc@freebsd.org> To: void <void@f-m.fm> Cc: freebsd-net@freebsd.org Subject: Re: Performance issues with vnet jails + epair + bridge Message-ID: <CAGaXuiJzq6WHTg7k4cV=oLOSRA89-cMayh9_Dyzu1bbBeLkuoQ@mail.gmail.com> In-Reply-To: <ZxBXOEsEd3ftYaws@vm2> References: <20240912181618.7895d10ad5ff2ebae9883192@gmail.com> <Zw3YGPIBC_s-q-Vg@vm2> <Zw3dlDuaSXsIG-yX@vm2> <CAGaXuiLG4Qv2KgDtJveN3adLh6b8tEzC4j6OYfLo1_dj8BKZWQ@mail.gmail.com> <ZxBXOEsEd3ftYaws@vm2>
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--00000000000067d6b70624a8771f Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Thanks for your testing! >From your VM test result in the link, if I understand correctly, the CUBIC in base stack has +24.5% better performance than the CUBIC in rack stack, and it is better than old releases and OpenBSD. That sounds like an improvement, although it still needs to be improved to catch up with the Linux kernel. FreeBSD 15.0-CURRENT base_stack: 807 Mbits/sec FreeBSD 15.0-CURRENT rack_stack: 648 Mbits/sec FreeBSD 14.0-RELEASE: 594 Mbits/sec FreeBSD 14.0-RELEASE-p11: 478 Mbits/sec FreeBSD 14.1-RELEASE-p5: 551 Mbits/sec OpenBSD 7.5: 676 Mbits/sec Linux 6.6.52-0-virt: 941 Mbits/sec cc On Wed, Oct 16, 2024 at 8:16=E2=80=AFPM void <void@f-m.fm> wrote: > Hi, > > On Tue, Oct 15, 2024 at 09:48:58AM -0400, Cheng Cui wrote: > >I am not sure if you are using FreeBSD15-CURRENT for testing in VMs. > >But given your iperf3 test result has retransmissions, if you can try, > there > >is a recent VM friendly improvement from TCP congestion control CUBIC. > > I did some further testing, also rack v. non-rack. > > http://void.f-m.fm.user.fm/speedtests-cubic.txt > -- > > --=20 Best Regards, Cheng Cui --00000000000067d6b70624a8771f Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr"><div>Thanks for your testing!</div><div><br></div><div>Fro= m your VM test result in the link, if I understand correctly, the CUBIC in = base stack has +24.5% better performance than the CUBIC in rack stack, and = it is better than old releases and OpenBSD. That sounds like an improvement= , although it still needs to be improved to catch up with the Linux kernel.= </div><div><br></div><div><div><font face=3D"monospace">FreeBSD 15.0-CURREN= T base_stack: 807 Mbits/sec<br>FreeBSD 15.0-CURRENT rack_stack: 648 Mbits/s= ec<br>FreeBSD 14.0-RELEASE: =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0594 Mb= its/sec<br>FreeBSD 14.0-RELEASE-p11: =C2=A0 =C2=A0 =C2=A0 =C2=A0478 Mbits/s= ec<br>FreeBSD 14.1-RELEASE-p5: =C2=A0 =C2=A0 =C2=A0 =C2=A0 551 Mbits/sec<br= >OpenBSD 7.5: =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 676 Mbits/sec<br>Linux 6.6.52-0-virt: =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 941 Mbits/sec</font><br></div><div><br></div><div>cc</div= ><div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">= On Wed, Oct 16, 2024 at 8:16=E2=80=AFPM void <<a href=3D"mailto:void@f-m= .fm">void@f-m.fm</a>> wrote:<br></div><blockquote class=3D"gmail_quote" = style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:s= olid;border-left-color:rgb(204,204,204);padding-left:1ex">Hi,<br> <br> On Tue, Oct 15, 2024 at 09:48:58AM -0400, Cheng Cui wrote:<br> >I am not sure if you are using FreeBSD15-CURRENT for testing in VMs.<br= > >But given your iperf3 test result has retransmissions, if you can try, = there<br> >is a recent VM friendly improvement from TCP congestion control CUBIC.<= br> <br> I did some further testing, also rack v. non-rack.<br> <br> <a href=3D"http://void.f-m.fm.user.fm/speedtests-cubic.txt" rel=3D"noreferr= er" target=3D"_blank">http://void.f-m.fm.user.fm/speedtests-cubic.txt</a><b= r> -- <br> <br> </blockquote></div><br clear=3D"all"><div><br></div><span class=3D"gmail_si= gnature_prefix">-- </span><br><div dir=3D"ltr" class=3D"gmail_signature"><d= iv dir=3D"ltr"><div></div>Best Regards,<div>Cheng Cui</div></div></div></di= v></div></div> --00000000000067d6b70624a8771f--
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