Date: Fri, 2 Oct 2015 18:49:58 -0300 From: Luiz Otavio O Souza <lists.br@gmail.com> To: "C.Dornig" <c_dornig@gmx.de> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: dwc on banana pi pro and poor network performance Message-ID: <CAB=2f8yEd58Gv-UXrJL=B7D1vVNhTEewSNoY4eDrVXZCs0Xpag@mail.gmail.com> In-Reply-To: <560ED8DF.4080709@gmx.de> References: <560ED8DF.4080709@gmx.de>
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On 2 October 2015 at 16:19, C.Dornig wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > Hi, > > > I have a Lemaker Banana Pi Pro and want to use it as router (regarding > the GBit interface). > > For testing i used iperf with two test hosts. The Pi have two vlans > configured and each test node use the pi as router to reach the other node. > > I created a FreeBSD 11 image with crochet (FreeBSD r288430, > +u-boot-bananapi version 2015-04). > > Test scenario: > > # On Banana: > sysctl net.inet.ip.forwarding=1 > sysctl net.inet.ip.fastforwarding=1 > ifconfig vlan10 create > ifconfig vlan10 vlan 10 vlandev dwc0 > ifconfig vlan10 10.0.0.1/24 up > ifconfig vlan11 create > ifconfig vlan11 vlan 11 vlandev dwc0 > ifconfig vlan11 10.0.1.1/24 up > > # Host 1: > ifconfig vlan10 create > ifconfig vlan10 vlan 10 vlandev em0 > ifconfig vlan10 10.0.0.100/24 up > route add -net 10.0.1.0/24 10.0.0.1 > iperf -c 10.0.1.100 > > # Host 2: > ifconfig vlan11 create > ifconfig vlan11 vlan 11 vlandev em0 > ifconfig vlan11 10.0.1.100/24 up > route add -net 10.0.0.0/24 10.0.1.1 > iperf -s > > The hosts can reach each others. > > Iperf reports me ~130 Mbit. > > During the test, netstat reports ~37k pps and the interrupt rate are > also not very high (~300). > > The same test with Linux on the PI results ~550 Mbit. > > Iperf from host 1 to host 2 without PI in between reports ~990 Mbit. > > > What's wrong here ? > > Regards, > C. This is expected, if_dwc needs some work to perform better. I just did enough to make it work on A20. If someone is willing to work with this, I can help with some of details (yongari@ was kind enough to educate me about what could be done there), otherwise I'll fix this on my free time (i.e. it will take some time). Luiz
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