Piplowe Posted January 13, 2021 Share Posted January 13, 2021 Hey, I'm trying to find out if I'm experiencing upload UDP packet loss when playing cod. Does anyone know the what packet size, length, datagrams and general bandwidth the PS4/PS5 uses when playing the game ? I've done some testing with IPerf but I'd like to try and mimic the packet size etc to mimic the game traffic. My assumption is that the game uses TCP for ping and game setup but UDP for the in game traffic. I get that packet loss will always occur as it's the nature of networks but to what degree is acceptable to play a game. With TCP the packets are resent, UDP they are general just dropped. My ISP Supplier test says there is nothing wrong with the line but my gaming experience is very poor, even with Geo filtering, anti bufferbloat and traffic prioritisation. I moved from Plusnet 80Mb Down 20Mb to Sky G.fast 150Mb Down 20Mb up a few months ago, however I see the same results on each ISP. This makes me think it's at the hardware level, perhaps the DSLAM, interleaving on/off etc. I wonder if when playing the game the download traffic is prioritised or affecting the upload throughput. -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- TESTING DETAILS -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- I'm using IPerf3 to run UDP diagnostics to a server I've got hosted. For anyone familiar with iperf, I'm running the command. ./iperf3 -c (my server) -p 5400 -u -l 20TEST 1 below, UDP upload on ISP - You can see a ten second test shows around 20% packet loss TEST 2 below, UDP upload, on hotspot - Same test parameters 0.76% packet lossTEST 3 below, UDP download on ISP - 0% packet loss I believe this the reason a lot of people experience the same issues in game and the ISP's / Openreach do not address it. Pointing your Geo location further away might reduce the perceived effect of packet loss, however playing on a 20ms game with 20% packet loss seems to have big effect. I've even tried inducing an addition ping delay up to from 50 - 100ms through an OpenWRT router but it doesn't improve things. I believe UDP packet loss is the main culprit. There is no packet loss on the download. -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- TESTS DETAILS BELOW -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- -----------------TEST 1 - UPLOAD UDP TEST ON ISP -----------------[ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams [ 5] 0.00-1.00 sec 95.7 KBytes 784 Kbits/sec 0.030 ms 1053/5953 (18%) [ 5] 1.00-2.00 sec 102 KBytes 833 Kbits/sec 0.032 ms 1375/6579 (21%) [ 5] 2.00-3.00 sec 101 KBytes 827 Kbits/sec 0.041 ms 1348/6515 (21%) [ 5] 3.00-4.00 sec 101 KBytes 828 Kbits/sec 0.022 ms 1436/6608 (22%) [ 5] 4.00-5.00 sec 101 KBytes 831 Kbits/sec 0.033 ms 1353/6547 (21%) [ 5] 5.00-6.00 sec 101 KBytes 828 Kbits/sec 0.041 ms 1341/6519 (21%) [ 5] 6.00-7.00 sec 98.9 KBytes 811 Kbits/sec 0.043 ms 1483/6549 (23%) [ 5] 7.00-8.00 sec 107 KBytes 879 Kbits/sec 0.016 ms 1099/6594 (17%) [ 5] 8.00-9.00 sec 103 KBytes 847 Kbits/sec 0.027 ms 1263/6557 (19%) [ 5] 9.00-10.00 sec 103 KBytes 841 Kbits/sec 0.032 ms 1267/6521 (19%) [ 5] 10.00-10.01 sec 20.0 Bytes 11.4 Kbits/sec 0.489 ms 18/19 (95%) - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams [ 5] 0.00-10.01 sec 1014 KBytes 830 Kbits/sec 0.489 ms 13036/64961 (20%) receiver -----------------TEST 2 - UPLOAD TEST ON 4G HOTSPOT THROUGH IPHONE ----------------- [ ID] Interval Transfer Bandwidth Total Datagrams [ 4] 0.00-1.00 sec 116 KBytes 948 Kbits/sec 5940 [ 4] 1.00-2.01 sec 128 KBytes 1.05 Mbits/sec 6579 [ 4] 2.01-3.00 sec 128 KBytes 1.05 Mbits/sec 6552 [ 4] 3.00-4.01 sec 128 KBytes 1.05 Mbits/sec 6567 [ 4] 4.01-5.00 sec 128 KBytes 1.05 Mbits/sec 6564 [ 4] 5.00-6.01 sec 128 KBytes 1.05 Mbits/sec 6552 [ 4] 6.01-7.01 sec 128 KBytes 1.05 Mbits/sec 6554 [ 4] 7.01-8.01 sec 128 KBytes 1.05 Mbits/sec 6554 [ 4] 8.01-9.01 sec 127 KBytes 1.04 Mbits/sec 6510 [ 4] 9.01-10.01 sec 128 KBytes 1.05 Mbits/sec 6552 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams [ 4] 0.00-10.01 sec 1.24 MBytes 1.04 Mbits/sec 0.089 ms 492/64824 (0.76%) [ 4] Sent 64824 datagrams -----------------TEST 3 - Download TEST with the same parameters on ISP ----------------- [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams [ 4] 0.00-1.00 sec 128 KBytes 1.05 Mbits/sec 0.246 ms 0/2625 (0%) [ 4] 1.00-2.00 sec 128 KBytes 1.05 Mbits/sec 0.308 ms 0/2621 (0%) [ 4] 2.00-3.00 sec 128 KBytes 1.05 Mbits/sec 0.274 ms 0/2616 (0%) [ 4] 3.00-4.00 sec 128 KBytes 1.05 Mbits/sec 0.237 ms 0/2625 (0%) [ 4] 4.00-5.00 sec 128 KBytes 1.05 Mbits/sec 0.275 ms 0/2624 (0%) [ 4] 5.00-6.00 sec 128 KBytes 1.05 Mbits/sec 0.277 ms 0/2619 (0%) [ 4] 6.00-7.00 sec 128 KBytes 1.05 Mbits/sec 0.282 ms 0/2621 (0%) [ 4] 7.00-8.00 sec 128 KBytes 1.05 Mbits/sec 0.359 ms 0/2622 (0%) [ 4] 8.00-9.00 sec 128 KBytes 1.05 Mbits/sec 0.231 ms 0/2621 (0%) [ 4] 9.00-10.00 sec 128 KBytes 1.05 Mbits/sec 0.273 ms 0/2622 (0%) - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams [ 4] 0.00-10.00 sec 1.25 MBytes 1.05 Mbits/sec 0.209 ms 0/26231 (0%) [ 4] Sent 26231 datagrams Link to comment Share on other sites More sharing options...
Dyson350 Posted January 13, 2021 Share Posted January 13, 2021 Opposite for me, I am getting double Upload compared to Download. It never use to do this and I made no setting changes prior to noticing. Link to comment Share on other sites More sharing options...
johnnytran Posted January 14, 2021 Share Posted January 14, 2021 I've ran some iperf3 tests on my openwrt router/PC and never experienced any losses. My gaming is still shit though, even with a perfect network. Link to comment Share on other sites More sharing options...
Piplowe Posted January 14, 2021 Author Share Posted January 14, 2021 30 minutes ago, johnnytran said: I've ran some iperf3 tests on my openwrt router/PC and never experienced any losses. My gaming is still shit though, even with a perfect network. @johnnytran Did you run any specific switches when you used I perf. So far I found packet loss when simulating voip traffic using the -n switch and when I push my upload above 12 Mb out of 20mb I was asking the community if they knew the packet size etc so I can test like for like. Link to comment Share on other sites More sharing options...
johnnytran Posted January 14, 2021 Share Posted January 14, 2021 21 hours ago, Piplowe said: @johnnytran Did you run any specific switches when you used I perf. So far I found packet loss when simulating voip traffic using the -n switch and when I push my upload above 12 Mb out of 20mb I was asking the community if they knew the packet size etc so I can test like for like. I was running the below command, told it was simulating the gaming traffic in CW. Sorry I don't know much more about this.. iperf3 -u -b 250K -l 250 -t 20 -c iperf.scottlinux.com Link to comment Share on other sites More sharing options...
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