Re: Raspberry Pi 3B+ and pitiful network speeds

From: MJ <mafsys1234_at_gmail.com>
Date: Wed, 23 Jun 2021 12:18:14 +1000
On 22/06/2021 11:25 pm, Ronald Klop wrote:
> <...>

>
> Hi,
>
> Just another data point for the investigation.
>
> RPI3B+ FreeBSD 13.0-RELEASE-p1 #0: Wed May 26 22:19:21 UTC 2021 GENERIC
> ue0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
>    options=80009<RXCSUM,VLAN_MTU,LINKSTATE>
>    ether b8:27:xx:xx:xx:xx
>    inet 192.168.1.148 netmask 0xffffff00 broadcast 192.168.1.255
>    media: Ethernet autoselect (1000baseT <full-duplex>)
>    status: active
>    nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>
>
> RPI4 FreeBSD 14.0-CURRENT #7 main-62ffcaab8: Tue Mar 23 17:26:53 CET 2021 GENERIC-NODEBUG
> genet0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
>    options=280009<RXCSUM,VLAN_MTU,LINKSTATE,RXCSUM_IPV6>
>    ether dc:a6:xx:xx:xx:xx
>    inet 192.168.1.127 netmask 0xffffff00 broadcast 192.168.1.255
>    media: Ethernet autoselect (1000baseT <full-duplex,master>)
>    status: active
>    nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>
>
> These two are next to each other connected by a 1gbit switch.
>
>
> [root_at_rpi3 ~]# iperf -c rpi4 -w 2m -t 30s -i 1
> ------------------------------------------------------------
> Client connecting to rpi4, TCP port 5001
> TCP window size: 32.8 KByte (WARNING: requested 1.91 MByte)
> ------------------------------------------------------------
> [  1] local 192.168.1.148 port 21246 connected with 192.168.1.127 port 5001
> [ ID] Interval       Transfer     Bandwidth
> [  1] 0.00-1.00 sec  12.6 MBytes   106 Mbits/sec
> [  1] 1.00-2.00 sec  13.6 MBytes   114 Mbits/sec
> [  1] 2.00-3.00 sec  13.5 MBytes   113 Mbits/sec
> [  1] 3.00-4.00 sec  13.6 MBytes   114 Mbits/sec
> [  1] 4.00-5.00 sec  13.5 MBytes   113 Mbits/sec
> [  1] 5.00-6.00 sec  13.6 MBytes   114 Mbits/sec
> [  1] 6.00-7.00 sec  13.6 MBytes   114 Mbits/sec
> [  1] 7.00-8.00 sec  13.6 MBytes   114 Mbits/sec
> [  1] 8.00-9.00 sec  13.2 MBytes   111 Mbits/sec
> [  1] 9.00-10.00 sec  13.5 MBytes   113 Mbits/sec
>
>
> [root_at_rpi4 ~]# iperf -c rpi3 -w 2m -t 30s -i 1
> ------------------------------------------------------------
> Client connecting to rpi3, TCP port 5001
> TCP window size: 32.8 KByte (WARNING: requested 1.91 MByte)
> ------------------------------------------------------------
> [  1] local 192.168.1.127 port 24993 connected with 192.168.1.148 port 5001
> [ ID] Interval       Transfer     Bandwidth
> [  1] 0.00-1.00 sec  15.6 MBytes   131 Mbits/sec
> [  1] 1.00-2.00 sec  16.8 MBytes   141 Mbits/sec
> [  1] 2.00-3.00 sec  16.6 MBytes   139 Mbits/sec
> [  1] 3.00-4.00 sec  16.8 MBytes   141 Mbits/sec
> [  1] 4.00-5.00 sec  16.5 MBytes   138 Mbits/sec
> [  1] 5.00-6.00 sec  16.8 MBytes   141 Mbits/sec
> [  1] 6.00-7.00 sec  16.4 MBytes   137 Mbits/sec
> [  1] 7.00-8.00 sec  16.5 MBytes   138 Mbits/sec
> [  1] 8.00-9.00 sec  16.6 MBytes   139 Mbits/sec
> [  1] 9.00-10.00 sec  14.6 MBytes   123 Mbits/sec
>
>
> Regards,
> Ronald.
>
These are very poor for the RPI4, are they not? Is it not fully 1000Mbit?

Your RPI3B results are a little better than mine. They are still not very impressive though.

Thanks

Matt
Received on Wed Jun 23 2021 - 02:18:14 UTC

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