Hi Simon,
On Thu, Feb 7, 2019 at 8:30 PM Simon Huelck <simonm...@gmx.de> wrote:
>
> Hi Guys,
>
>
> i can confirm better performance with 4.14.29
>
> - ~900 MBits with iperf2 in one way
> -~ 500 - 600MBits with iperf2 in duplex in both directions
>
>
> This wasnt the case with 4.17.9, not with 4.18, 4.19 or the 5.0 series.....
I just did a small test myself on a Khadas VIM2:
# iperf3 -c 192.168.1.100
Connecting to host 192.168.1.100, port 5201
[ 5] local 192.168.1.189 port 37192 connected to 192.168.1.100 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 113 MBytes 946 Mbits/sec 0 354 KBytes
[ 5] 1.00-2.00 sec 112 MBytes 940 Mbits/sec 0 354 KBytes
[ 5] 2.00-3.00 sec 110 MBytes 920 Mbits/sec 241 228 KBytes
[ 5] 3.00-4.00 sec 112 MBytes 940 Mbits/sec 0 314 KBytes
[ 5] 4.00-5.00 sec 111 MBytes 933 Mbits/sec 89 83.4 KBytes
[ 5] 5.00-6.00 sec 110 MBytes 926 Mbits/sec 115 335 KBytes
[ 5] 6.00-7.00 sec 112 MBytes 941 Mbits/sec 0 358 KBytes
[ 5] 7.00-8.00 sec 112 MBytes 941 Mbits/sec 0 362 KBytes
[ 5] 8.00-9.00 sec 112 MBytes 941 Mbits/sec 0 369 KBytes
[ 5] 9.00-10.00 sec 112 MBytes 942 Mbits/sec 0 372 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.09 GBytes 937 Mbits/sec 445 sender
[ 5] 0.00-10.04 sec 1.09 GBytes 932 Mbits/sec receiver
iperf Done.
(it's interesting that the sending direction has 445 retries)
# iperf3 -c 192.168.1.100 -R
Connecting to host 192.168.1.100, port 5201
Reverse mode, remote host 192.168.1.100 is sending
[ 5] local 192.168.1.189 port 37196 connected to 192.168.1.100 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 90.9 MBytes 763 Mbits/sec
[ 5] 1.00-2.00 sec 90.9 MBytes 762 Mbits/sec
[ 5] 2.00-3.00 sec 90.7 MBytes 760 Mbits/sec
[ 5] 3.00-4.00 sec 91.3 MBytes 766 Mbits/sec
[ 5] 4.00-5.00 sec 91.1 MBytes 764 Mbits/sec
[ 5] 5.00-6.00 sec 91.1 MBytes 765 Mbits/sec
[ 5] 6.00-7.00 sec 90.8 MBytes 762 Mbits/sec
[ 5] 7.00-8.00 sec 90.9 MBytes 762 Mbits/sec
[ 5] 8.00-9.00 sec 91.0 MBytes 764 Mbits/sec
[ 5] 9.00-10.00 sec 91.3 MBytes 766 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.04 sec 911 MBytes 762 Mbits/sec 0 sender
[ 5] 0.00-10.00 sec 910 MBytes 763 Mbits/sec receiver
iperf Done.
(when receiving I see no retries)
for my test I used my Khadas VIM2 (as I don't have a GXBB board anymore).
test setup: PC -> built-in switch in some ath79 based OpenWrt device
-> VIM2. no VLANs are used
revision: latest mainline, which at the time of testing is:
46c291e277f937378 ("Merge tag 'armsoc-fixes-5.0' of
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc")
> How can i help further ?
it's good to know that 4.14 has "good" performance in your scenario
can you please show the full iperf outputs for your tests (preferably
on both, 4.14 and 5.0-rcX)?
do you see any improvements on 5.0-rcX when not using VLANs (this is
just a random guess)?
Regards
Martin
