On Wed, Oct 23, 2024 at 08:28:01AM -0400, Cheng Cui wrote:
The latency does not sound a problem to me. What is the performance of
TCP congestion control algorithm `newreno`?
In case you need to load `newreno` first.
cc@n1:~ % sudo kldload newreno
cc@n1:~ % sudo sysctl net.inet.tcp.cc.algorithm=newreno
net.inet.tcp.cc.algorithm: cubic -> newreno
cc@n1:~ %
And let me know the result of `newreno` vs. `cubic`, for example:
iperf3 -B ${src} --cport ${tcp_port} -c ${dst} -l 1M -t 20 -i 2 -VC newreno
speedtests@vm4-fbsd14s:~ % doas kldload newreno
speedtests@vm4-fbsd14s:~ % doas sysctl net.inet.tcp.cc.algorithm=newreno
net.inet.tcp.cc.algorithm: cubic -> newreno
speedtests@vm4-fbsd14s:~ % iperf3 -B 192.168.1.13 --cport 5201 -c 192.168.1.232
-l 1M -t 20 -i 2 -VC newreno
iperf 3.17.1
FreeBSD vm4-fbsd14s.home.arpa 14.2-PRERELEASE FreeBSD 14.2-PRERELEASE #0
stable/14-n269252-e18ba5c5555a-dirty: Mon Oct 21 18:09:22 BST 2024
r...@vm4-fbsd14s.home.arpa:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64
Control connection MSS 1460
Time: Wed, 23 Oct 2024 14:41:11 UTC
Connecting to host 192.168.1.232, port 5201
Cookie: tvrlkd2axzx24uui7gglzk4ni66ib7qy4kxa
TCP MSS: 1460 (default)
[ 5] local 192.168.1.13 port 5201 connected to 192.168.1.232 port 5201
Starting Test: protocol: TCP, 1 streams, 1048576 byte blocks, omitting 0 seconds,
20 second test, tos 0
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-2.01 sec 137 MBytes 572 Mbits/sec 0 629 KBytes
[ 5] 2.01-4.13 sec 159 MBytes 628 Mbits/sec 0 928 KBytes
[ 5] 4.13-6.12 sec 192 MBytes 809 Mbits/sec 0 1.16 MBytes
[ 5] 6.12-8.08 sec 153 MBytes 656 Mbits/sec 0 1.33 MBytes
[ 5] 8.08-10.08 sec 176 MBytes 737 Mbits/sec 0 1.51 MBytes
[ 5] 10.08-12.13 sec 211 MBytes 864 Mbits/sec 0 1.69 MBytes
[ 5] 12.13-14.04 sec 138 MBytes 606 Mbits/sec 73 1.01 MBytes
[ 5] 14.04-16.02 sec 155 MBytes 657 Mbits/sec 0 1.21 MBytes
[ 5] 16.02-18.10 sec 168 MBytes 678 Mbits/sec 0 1.39 MBytes
[ 5] 18.10-20.13 sec 188 MBytes 777 Mbits/sec 0 1.56 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
Test Complete. Summary Results:
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-20.13 sec 1.64 GBytes 699 Mbits/sec 73 sender
[ 5] 0.00-20.14 sec 1.64 GBytes 698 Mbits/sec receiver
CPU Utilization: local/sender 97.7% (0.0%u/97.7%s), remote/receiver 19.5%
(1.6%u/17.9%s)
snd_tcp_congestion newreno
rcv_tcp_congestion newreno
iperf Done.
======================================
speedtests@vm4-fbsd14s:~ % doas sysctl net.inet.tcp.cc.algorithm=cubic
net.inet.tcp.cc.algorithm: newreno -> cubic
speedtests@vm4-fbsd14s:~ % iperf3 -B 192.168.1.13 --cport 5201 -c 192.168.1.232
-l 1M -t 20 -i 2 -VC cubic
iperf 3.17.1
FreeBSD vm4-fbsd14s.home.arpa 14.2-PRERELEASE FreeBSD 14.2-PRERELEASE #0
stable/14-n269252-e18ba5c5555a-dirty: Mon Oct 21 18:09:22 BST 2024
r...@vm4-fbsd14s.home.arpa:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64
Control connection MSS 1460
Time: Wed, 23 Oct 2024 14:51:30 UTC
Connecting to host 192.168.1.232, port 5201
Cookie: wp5nkovyy5pwzqos4lsdlqv4loccl6iu5kdv
TCP MSS: 1460 (default)
[ 5] local 192.168.1.13 port 5201 connected to 192.168.1.232 port 5201
Starting Test: protocol: TCP, 1 streams, 1048576 byte blocks,
omitting 0 seconds, 20 second test, tos 0
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-2.03 sec 184 MBytes 762 Mbits/sec 0 752 KBytes
[ 5] 2.03-4.07 sec 198 MBytes 811 Mbits/sec 0 1.05 MBytes
[ 5] 4.07-6.13 sec 193 MBytes 787 Mbits/sec 0 1.28 MBytes
[ 5] 6.13-8.08 sec 203 MBytes 874 Mbits/sec 0 1.48 MBytes
[ 5] 8.08-10.13 sec 192 MBytes 786 Mbits/sec 0 1.65 MBytes
[ 5] 10.13-12.13 sec 156 MBytes 653 Mbits/sec 44 1.40 MBytes
[ 5] 12.13-14.13 sec 167 MBytes 703 Mbits/sec 16 1.04 MBytes
[ 5] 14.13-16.07 sec 167 MBytes 721 Mbits/sec 0 1.25 MBytes
[ 5] 16.07-18.02 sec 114 MBytes 490 Mbits/sec 0 1.37 MBytes
[ 5] 18.02-20.04 sec 173 MBytes 719 Mbits/sec 0 1.53 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
Test Complete. Summary Results:
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-20.04 sec 1.71 GBytes 731 Mbits/sec 60
sender
[ 5] 0.00-20.05 sec 1.71 GBytes 730 Mbits/sec
receiver
CPU Utilization: local/sender 97.6% (0.0%u/97.6%s), remote/receiver
20.5% (1.8%u/18.6%s)
snd_tcp_congestion cubic
rcv_tcp_congestion cubic
iperf Done.
speedtests@vm4-fbsd14s:~ %
--
