Packet loss and iPerf tests

SwimGeek

SwimGeek

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Location
Cape Town
Hi

I'm starting to wonder what % of people have fibre lines with packet loss but are not aware of it.

A small % loss can have a big impact on your international download speeds.

Can your line do an 80% UDP iPerf test without packet loss?

Test from NAP JHB iPerf server: (adjust -b to 80% of line speed)
iperf3 -4 -V -t 20 -O 3 -u -b 800M -R -c 196.10.98.214

(or use server closer to you)

[update] - tests look a lot better than I expected, please also post FNO - Vuma AE / Frogfoot / Openserve etc
 
Last edited:
Test Complete. Summary Results:

[ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams
[5] 0.00-20.10 sec 115 MBytes 48.0 Mbits/sec 0.000 ms 0/83721 (0%) sender
[5] 0.00-20.00 sec 114 MBytes 47.9 Mbits/sec 0.370 ms 222/83330 (0.27%) receiver

Frogfoot/Mweb, Port Elizabeth (we have an NLD break at present so I am not sure if that has been resolved already)
 
Last edited:
Test Complete. Summary Results:

[ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams
[ 5] 0.00-20.05 sec 191 MBytes 80.0 Mbits/sec 0.000 ms 0/138989 (0%) sender
[ 5] 0.00-20.00 sec 191 MBytes 80.0 Mbits/sec 0.157 ms 0/138886 (0%) receiver
 
Test Complete. Summary Results:

[ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams
[ 5] 0.00-20.07 sec 191 MBytes 80.0 Mbits/sec 0.000 ms 0/0 (0%) sender
[ 5] 0.00-20.00 sec 191 MBytes 80.0 Mbits/sec 0.042 ms 0/138889 (0%) receiver

Edit: Openserve
 
Last edited:
Code: 
Test Complete. Summary Results:
[ ID] Interval           Transfer     Bitrate         Jitter    Lost/Total Datagrams
[  5]   0.00-20.07  sec   191 MBytes  80.0 Mbits/sec  0.000 ms  0/0 (0%)  sender
[SUM]  0.0-20.1 sec  79 datagrams received out-of-order
[  5]   0.00-20.01  sec   191 MBytes  80.0 Mbits/sec  0.081 ms  0/138960 (0%)  receiver

Vuma Villages, KZN.
 
SureThing said:
Stupid question, how does one perform the test pls?
Click to expand...
Hi,

Not sure it's 'Stupid'

The command to run was in the original post, a few people sent results.

You need to have iperf3 installed, usually on a laptop, which you connect to your router or ONT / CPE.
 
Done. Woe is me.

Test Complete. Summary Results:
[ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams
[ 5] 0.00-20.07 sec 768 MBytes 321 Mbits/sec 0.000 ms 0/0 (0%) sender
[ 5] 0.00-20.00 sec 750 MBytes 314 Mbits/sec 0.024 ms 11980/550358 (2.2%) receiver

Octotel / Atomic
 
800Mbps + Atomic + Vumatel (Active Ethernet), Cape Town

Code: 
# iperf3 -4 -V -t 15 -O 3 -u -b 800M -R -c iperf.atomic.ac -p 3334
iperf 3.12
Linux probe1 6.1.0-17-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.69-1 (2023-12-30) x86_64
Control connection MSS 1448
Setting UDP block size to 1448
Time: Thu, 01 Feb 2024 15:32:18 GMT
Connecting to host iperf.atomic.ac, port 3334
Reverse mode, remote host iperf.atomic.ac is sending
      Cookie: pq25254jx4jyodjiy63icszfvs2ygkzkhjat
      Target Bitrate: 800000000
[  5] local 192.168.2.81 port 36146 connected to 102.216.76.102 port 3334
Starting Test: protocol: UDP, 1 streams, 1448 byte blocks, omitting 3 seconds, 15 second test, tos 0
[ ID] Interval           Transfer     Bitrate         Jitter    Lost/Total Datagrams
[  5]   0.00-1.00   sec  95.4 MBytes   800 Mbits/sec  0.011 ms  0/69078 (0%)  (omitted)
[  5]   1.00-2.00   sec  95.4 MBytes   800 Mbits/sec  0.011 ms  0/69057 (0%)  (omitted)
[  5]   2.00-3.00   sec  95.3 MBytes   800 Mbits/sec  0.015 ms  0/69030 (0%)  (omitted)
[  5]   0.00-1.00   sec  95.4 MBytes   800 Mbits/sec  0.011 ms  0/69092 (0%)
[  5]   1.00-2.00   sec  95.3 MBytes   800 Mbits/sec  0.011 ms  0/69047 (0%)
[  5]   2.00-3.00   sec  95.4 MBytes   800 Mbits/sec  0.011 ms  0/69075 (0%)
[  5]   3.00-4.00   sec  95.4 MBytes   800 Mbits/sec  0.011 ms  0/69050 (0%)
[  5]   4.00-5.00   sec  95.4 MBytes   800 Mbits/sec  0.011 ms  0/69059 (0%)
[  5]   5.00-6.00   sec  95.4 MBytes   800 Mbits/sec  0.011 ms  0/69073 (0%)
[  5]   6.00-7.00   sec  95.4 MBytes   800 Mbits/sec  0.011 ms  0/69061 (0%)
[  5]   7.00-8.00   sec  95.4 MBytes   800 Mbits/sec  0.011 ms  0/69051 (0%)
[  5]   8.00-9.00   sec  95.4 MBytes   800 Mbits/sec  0.011 ms  0/69061 (0%)
[  5]   9.00-10.00  sec  95.4 MBytes   800 Mbits/sec  0.011 ms  0/69059 (0%)
[  5]  10.00-11.00  sec  95.4 MBytes   800 Mbits/sec  0.011 ms  0/69063 (0%)
[  5]  11.00-12.00  sec  95.4 MBytes   800 Mbits/sec  0.011 ms  0/69060 (0%)
[  5]  12.00-13.00  sec  95.4 MBytes   800 Mbits/sec  0.012 ms  0/69074 (0%)
[  5]  13.00-14.00  sec  95.4 MBytes   800 Mbits/sec  0.011 ms  0/69061 (0%)
[  5]  14.00-15.00  sec  95.3 MBytes   800 Mbits/sec  0.011 ms  0/69048 (0%)
- - - - - - - - - - - - - - - - - - - - - - - - -
Test Complete. Summary Results:
[ ID] Interval           Transfer     Bitrate         Jitter    Lost/Total Datagrams
[  5]   0.00-15.00  sec  1.40 GBytes   800 Mbits/sec  0.000 ms  0/1036009 (0%)  sender
[  5]   0.00-15.00  sec  1.40 GBytes   800 Mbits/sec  0.011 ms  0/1035934 (0%)  receiver
 
Openserve GPON 500 Mbps Atomic Access


- - - - - - - - - - - - - - - - - - - - - - - - -
Test Complete. Summary Results:
[ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams
[ 6] 0.00-20.02 sec 955 MBytes 400 Mbits/sec 0.000 ms 0/0 (0%) sender
[SUM] 0.0-20.0 sec 9 datagrams received out-of-order
[ 6] 0.00-20.00 sec 954 MBytes 400 Mbits/sec 0.055 ms 77/694551 (0.011%) receiver

iperf Done.
 
Last edited:
FTTH. Frogfoot. GPON. 1000Mbps. Atomic Access.

Well what do you know. FF got their act together. No Loss @ Peak. Well done @Frogfoot Fibre have to give you credit where it's due.

- - - - - - - - - - - - - - - - - - - - - - - - -


Test Complete. Summary Results:


[ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams


[ 6] 0.00-30.00 sec 2.79 GBytes 800 Mbits/sec 0.000 ms 0/0 (0%) sender


[ 6] 0.00-30.00 sec 2.79 GBytes 800 Mbits/sec 0.014 ms 0/2083322 (0%) receiver
Click to expand...
 
I knew it was too good to be true. @Frogfoot Fibre - Seriously?

I think last time it was a faulty sfp or sfp+ module if I recall and no its not my ISP as WAN2 below is Openserve with the same ISP testing to the same locations, no losses there. Latency on Openserve remains steady @ 1.8 ms to the ISP router / gateway / LNS. Frogtoot 80+ ms from Milnerton to Teraco.

1708879382328.png

Code: 
Starting Test: protocol: UDP, 1 streams, 1440 byte blocks, omitting 3 seconds, 30 second test, tos 0
[ ID] Interval           Transfer     Bitrate         Jitter    Lost/Total Datagrams
[  6]   0.00-1.00   sec  91.8 MBytes   770 Mbits/sec  0.007 ms  2519/69345 (3.6%)  (omitted)
[  6]   1.00-2.00   sec  92.4 MBytes   774 Mbits/sec  0.004 ms  2261/69521 (3.3%)  (omitted)
[  6]   1.00-1.00   sec  92.7 MBytes   389 Mbits/sec  0.017 ms  6186/138836 (4.5%) 
[  6]   1.00-2.00   sec  93.4 MBytes   784 Mbits/sec  0.022 ms  1394/69430 (2%) 
[  6]   2.00-3.00   sec  91.9 MBytes   771 Mbits/sec  0.011 ms  2559/69458 (3.7%) 
[  6]   3.00-4.00   sec  91.0 MBytes   763 Mbits/sec  0.006 ms  3196/69454 (4.6%) 
[  6]   4.00-5.00   sec  90.4 MBytes   759 Mbits/sec  0.006 ms  3593/69432 (5.2%) 
[  6]   5.00-6.00   sec  91.1 MBytes   765 Mbits/sec  0.005 ms  3079/69449 (4.4%) 
[  6]   6.00-7.00   sec  91.1 MBytes   764 Mbits/sec  0.006 ms  3103/69438 (4.5%) 
[  6]   7.00-8.00   sec  89.1 MBytes   748 Mbits/sec  0.004 ms  4548/69460 (6.5%) 
[  6]   8.00-9.00   sec  90.3 MBytes   758 Mbits/sec  0.012 ms  3696/69452 (5.3%) 
[  6]   9.00-10.00  sec  93.8 MBytes   785 Mbits/sec  0.005 ms  1303/69574 (1.9%) 
[  6]  10.00-11.00  sec  92.0 MBytes   772 Mbits/sec  0.007 ms  2480/69455 (3.6%) 
[  6]  11.00-12.00  sec  91.3 MBytes   767 Mbits/sec  0.017 ms  2860/69344 (4.1%) 
[  6]  12.00-13.00  sec  90.9 MBytes   762 Mbits/sec  0.003 ms  3215/69404 (4.6%) 
[  6]  13.00-14.00  sec  93.7 MBytes   786 Mbits/sec  0.003 ms  1257/69516 (1.8%) 
[  6]  14.00-15.00  sec  93.0 MBytes   778 Mbits/sec  0.054 ms  1877/69587 (2.7%) 
[  6]  15.00-16.00  sec  88.5 MBytes   745 Mbits/sec  0.025 ms  4798/69230 (6.9%) 
[  6]  16.00-17.00  sec  87.8 MBytes   736 Mbits/sec  0.005 ms  5534/69451 (8%) 
[  6]  17.00-18.00  sec  90.3 MBytes   757 Mbits/sec  0.025 ms  3741/69467 (5.4%) 
[  6]  18.00-19.00  sec  90.7 MBytes   761 Mbits/sec  0.004 ms  3397/69418 (4.9%) 
[  6]  19.00-20.00  sec  90.8 MBytes   761 Mbits/sec  0.018 ms  3356/69457 (4.8%) 
[  6]  20.00-21.00  sec  90.2 MBytes   754 Mbits/sec  0.008 ms  3973/69681 (5.7%) 
[  6]  21.00-22.00  sec  90.2 MBytes   758 Mbits/sec  0.005 ms  3671/69386 (5.3%) 
[  6]  22.00-23.00  sec  90.3 MBytes   757 Mbits/sec  0.034 ms  3784/69544 (5.4%) 
[  6]  23.00-24.00  sec  90.9 MBytes   762 Mbits/sec  0.013 ms  3212/69407 (4.6%) 
[  6]  24.00-25.00  sec  91.1 MBytes   764 Mbits/sec  0.036 ms  3089/69436 (4.4%) 
[  6]  25.00-26.00  sec  92.6 MBytes   777 Mbits/sec  0.010 ms  1991/69455 (2.9%) 
[  6]  26.00-27.00  sec  93.1 MBytes   782 Mbits/sec  0.026 ms  1583/69411 (2.3%) 
[  6]  27.00-28.00  sec  92.5 MBytes   776 Mbits/sec  0.006 ms  2091/69478 (3%) 
[  6]  28.00-29.00  sec  89.0 MBytes   747 Mbits/sec  0.023 ms  4628/69418 (6.7%) 
[  6]  29.00-30.00  sec  89.4 MBytes   752 Mbits/sec  0.045 ms  4143/69228 (6%) 
- - - - - - - - - - - - - - - - - - - - - - - - -
Test Complete. Summary Results:
[ ID] Interval           Transfer     Bitrate         Jitter    Lost/Total Datagrams
[  6]   0.00-30.04  sec  2.80 GBytes   800 Mbits/sec  0.000 ms  0/0 (0%)  sender
[  6]   0.00-30.00  sec  2.67 GBytes   764 Mbits/sec  0.045 ms  93100/2083395 (4.5%)  receiver
 
Rich (BB code): 
Test Complete. Summary Results:
[ ID] Interval           Transfer     Bandwidth       Jitter    Lost/Total Datagrams
[  4]   0.00-20.00  sec   108 MBytes  45.1 Mbits/sec  0.234 ms  68/13736 (0.5%)
[  4] Sent 13736 datagrams
[SUM]  0.0-20.0 sec  47 datagrams received out-of-order

Cool Ideas - Openserve
 
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