paul- wrote:
> If I recall, a process can flood the network too. Perhaps that has been
> fixed in newer kernels. How does your pi3 perform with and without the
> -b 300 setting? When it comes to audio, 300MBit is more than
> sufficient to stream audio, which is what we are really concerned about.
For just pure streaming to players, yes, but actually I'm concerned
about any network errors due to the odd behaviour noted before, plus my
music library is stored on another machine, which will be retrieved
using SMB/TCP on GigE, and stressing the system is one of the best ways
of showing errors.
So I compared iperf on UI vs CLI on a Pi3/6.0.0:
UI:
Code:
--------------------
[ WARN ] Squeezelite is running, results might be affected
[ WARN ] Goto Main menu and stop squeezelite
[ INFO ] Iperf running in TCP Mode.
[ INFO ] Iperf running in Receive Mode.
[ INFO ] Iperf will run for 20 seconds, then output will show.......
iperf 3.6
Linux Touch-pCP 4.19.105-pcpCore_v7 #1 SMP Sat Feb 22 00:32:02 EST 2020 armv7l
Control connection MSS 1460
Time: Wed, 01 Jul 2020 12:39:31 GMT
Connecting to host 192.168.1.105, port 5201
Reverse mode, remote host 192.168.1.105 is sending
Cookie: xdc5lxnjjixno4h4vq6qqnu7m5nvf7hrufdc
TCP MSS: 1460 (default)
[ 5] local 192.168.1.112 port 36136 connected to 192.168.1.105 port 5201
Starting Test: protocol: TCP, 1 streams, 131072 byte blocks, omitting 0
seconds, 20 second test, tos 0
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 35.6 MBytes 299 Mbits/sec
[ 5] 1.00-2.00 sec 34.2 MBytes 287 Mbits/sec
[ 5] 2.00-3.00 sec 37.0 MBytes 310 Mbits/sec
[ 5] 3.00-4.00 sec 35.3 MBytes 296 Mbits/sec
[ 5] 4.00-5.00 sec 37.0 MBytes 311 Mbits/sec
[ 5] 5.00-6.00 sec 35.8 MBytes 300 Mbits/sec
[ 5] 6.00-7.00 sec 34.0 MBytes 285 Mbits/sec
[ 5] 7.00-8.00 sec 37.5 MBytes 314 Mbits/sec
[ 5] 8.00-9.00 sec 34.1 MBytes 286 Mbits/sec
[ 5] 9.00-10.00 sec 36.4 MBytes 306 Mbits/sec
[ 5] 10.00-11.00 sec 36.9 MBytes 310 Mbits/sec
[ 5] 11.00-12.00 sec 33.5 MBytes 281 Mbits/sec
[ 5] 12.00-13.00 sec 36.3 MBytes 304 Mbits/sec
[ 5] 13.00-14.00 sec 37.3 MBytes 313 Mbits/sec
[ 5] 14.00-15.00 sec 35.8 MBytes 300 Mbits/sec
[ 5] 15.00-16.00 sec 35.7 MBytes 299 Mbits/sec
[ 5] 16.00-17.00 sec 34.9 MBytes 292 Mbits/sec
[ 5] 17.00-18.00 sec 34.7 MBytes 291 Mbits/sec
[ 5] 18.00-19.00 sec 38.1 MBytes 319 Mbits/sec
[ 5] 19.00-20.00 sec 33.8 MBytes 283 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
Test Complete. Summary Results:
[ ID] Interval Transfer Bitrate
[ 5] 0.00-20.00 sec 714 MBytes 299 Mbits/sec sender
[ 5] 0.00-20.00 sec 714 MBytes 299 Mbits/sec receiver
CPU Utilization: local/receiver 35.5% (1.3%u/34.2%s), remote/sender 1.5%
(0.2%u/1.4%s)
rcv_tcp_congestion cubic
iperf Done.
--------------------
CLI:
Code:
--------------------
~$ iperf3 -c 192.168.1.105
Connecting to host 192.168.1.105, port 5201
[ 5] local 192.168.1.112 port 36140 connected to 192.168.1.105 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 34.2 MBytes 287 Mbits/sec 0 217 KBytes
[ 5] 1.00-2.00 sec 33.8 MBytes 284 Mbits/sec 0 217 KBytes
[ 5] 2.00-3.00 sec 31.9 MBytes 268 Mbits/sec 0 217 KBytes
[ 5] 3.00-4.00 sec 33.7 MBytes 282 Mbits/sec 0 217 KBytes
[ 5] 4.00-5.00 sec 33.7 MBytes 283 Mbits/sec 0 217 KBytes
[ 5] 5.00-6.00 sec 33.4 MBytes 280 Mbits/sec 0 217 KBytes
[ 5] 6.00-7.00 sec 33.9 MBytes 284 Mbits/sec 0 217 KBytes
[ 5] 7.00-8.00 sec 32.0 MBytes 268 Mbits/sec 0 217 KBytes
[ 5] 8.00-9.00 sec 33.7 MBytes 283 Mbits/sec 0 217 KBytes
[ 5] 9.00-10.00 sec 33.4 MBytes 281 Mbits/sec 0 217 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 334 MBytes 280 Mbits/sec 0 sender
[ 5] 0.00-10.00 sec 333 MBytes 280 Mbits/sec receiver
iperf Done.
$ iperf3 -c 192.168.1.105 -b 300M
Connecting to host 192.168.1.105, port 5201
[ 5] local 192.168.1.112 port 36156 connected to 192.168.1.105 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 32.4 MBytes 271 Mbits/sec 0 217 KBytes
[ 5] 1.00-2.00 sec 32.5 MBytes 273 Mbits/sec 0 217 KBytes
[ 5] 2.00-3.00 sec 33.5 MBytes 281 Mbits/sec 0 217 KBytes
[ 5] 3.00-4.00 sec 33.5 MBytes 281 Mbits/sec 0 217 KBytes
[ 5] 4.00-5.00 sec 33.6 MBytes 282 Mbits/sec 0 217 KBytes
[ 5] 5.00-6.00 sec 33.8 MBytes 283 Mbits/sec 0 217 KBytes
[ 5] 6.00-7.00 sec 32.9 MBytes 276 Mbits/sec 0 217 KBytes
[ 5] 7.00-8.00 sec 33.0 MBytes 277 Mbits/sec 0 217 KBytes
[ 5] 8.00-9.00 sec 33.6 MBytes 282 Mbits/sec 0 217 KBytes
[ 5] 9.00-10.00 sec 32.1 MBytes 269 Mbits/sec 0 217 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 331 MBytes 278 Mbits/sec 0 sender
[ 5] 0.00-10.00 sec 331 MBytes 277 Mbits/sec receiver
iperf Done.
$ ifconfig -a
eth0 Link encap:Ethernet HWaddr B8:27:EB:CB:07:5A
inet addr:192.168.1.112 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:646145 errors:0 dropped:132 overruns:0 frame:0
TX packets:550661 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:787982745 (751.4 MiB) TX bytes:726794679 (693.1 MiB)
--------------------
------------------------------------------------------------------------
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