Hi, after reading through a bunch of related topics on this amazing forum i couldn't find any solution to my problem so here it goes.
My problem is: 3 people using the network and i have terrible ping spikes, packet drops, stuttering/lagging in all online games when anyone opens a youtube video or any streaming service. The lag happens immediately when the video loads and then after 10-15s it gets back to normal.
What i have: UBNT-ERX router with OpenWrt 19.07.2, ADSL2 through copper telephone line at around 10Mb/s down / 0.5Mb/s up speed.
Things that i tried so far:
- Setting up sqm according to SQM Details with layer_cake / piece_of_cake, with and without the per-host isolation commands. I tried these in every possible combination. Tried to actually measure the ATM overhead (result was 40) and using that or the default 44bytes. Didn't make any difference.
- Limiting every other device (except gaming one) on the network with Qos over nftables and static limits with and without sqm. I tested this with only 2 devices on the network (1 gaming pc, 1 laptop) and limiting the laptop down to 3Mbit or not limiting it at all didn't make any difference to latency, lagging.
- Setting up dscp marks with layer cake with diffserv4 which actually marked my gaming packets properly with EF PHB and youtube frames with AF41 (using wireshark) but it didn't make any difference in terms of latency and lagging in game.
So right now i'm just out of ideas and i have a very limited knowledge about networks at this level. But one thing was obvious: bandwidth limit doesn't make any difference so somehow i'd need to prioritize all traffic not by ports and services but by device. So my overall question is how can i prioritize 1 device by ip or mac address against all of the others? Can someone point me to a general right direction? Or is my internet so bad that it won't even matter?
Here are some outputs and numbers:
SQM OFF:
SQM ON with layer_cake
SQM ON with piece_of_cake
etc/config/sqm:
config queue 'eth1'
option interface 'pppoe-wan'
option debug_logging '0'
option verbosity '5'
option qdisc_advanced '1'
option ingress_ecn 'ECN'
option egress_ecn 'NOECN'
option qdisc_really_really_advanced '1'
option linklayer 'atm'
option download '8500'
option iqdisc_opts 'nat dual-dsthost ingress'
option eqdisc_opts 'nat dual-srchost'
option qdisc 'cake'
option enabled '1'
option squash_dscp '1'
option overhead '44'
option script 'piece_of_cake.qos'
option squash_ingress '1'
option upload '425'
'tc -s qdisc' before loading a youtube video and gaming:
qdisc noqueue 0: dev lo root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc fq_codel 0: dev eth0 root refcnt 2 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 148046589 bytes 197203 pkt (dropped 290, overlimits 0 requeues 24)
backlog 0b 0p requeues 24
maxpacket 3028 drop_overlimit 0 new_flow_count 304 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc noqueue 0: dev br-lan root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev eth0.1 root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev eth0.2 root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc cake 801f: dev pppoe-wan root refcnt 2 bandwidth 425Kbit besteffort dual-srchost nat nowash no-ack-filter split-gso rtt 100.0ms atm overhead 44
Sent 2789095 bytes 15940 pkt (dropped 1861, overlimits 17152 requeues 0)
backlog 128b 2p requeues 0
memory used: 177408b of 4Mb
capacity estimate: 425Kbit
min/max network layer size: 40 / 1492
min/max overhead-adjusted size: 106 / 1696
average network hdr offset: 0
Tin 0
thresh 425Kbit
target 42.7ms
interval 137.7ms
pk_delay 43.4ms
av_delay 3.5ms
sp_delay 79us
backlog 128b
pkts 17803
bytes 3479868
way_inds 436
way_miss 426
way_cols 0
drops 1861
marks 0
ack_drop 0
sp_flows 5
bk_flows 1
un_flows 0
max_len 5840
quantum 300
qdisc ingress ffff: dev pppoe-wan parent ffff:fff1 ----------------
Sent 22046451 bytes 21227 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc cake 8020: dev ifb4pppoe-wan root refcnt 2 bandwidth 8500Kbit besteffort dual-dsthost nat wash ingress no-ack-filter split-gso rtt 100.0ms atm overhead 44
Sent 21697960 bytes 20987 pkt (dropped 240, overlimits 15615 requeues 0)
backlog 0b 0p requeues 0
memory used: 104832b of 4Mb
capacity estimate: 8500Kbit
min/max network layer size: 38 / 1492
min/max overhead-adjusted size: 106 / 1696
average network hdr offset: 0
Tin 0
thresh 8500Kbit
target 5.0ms
interval 100.0ms
pk_delay 340us
av_delay 20us
sp_delay 12us
backlog 0b
pkts 21227
bytes 22046451
way_inds 511
way_miss 425
way_cols 0
drops 240
marks 0
ack_drop 0
sp_flows 0
bk_flows 1
un_flows 0
max_len 1492
quantum 300
'tc -s qdisc' after loading a youtube video and gaming:
qdisc noqueue 0: dev lo root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc fq_codel 0: dev eth0 root refcnt 2 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 225384759 bytes 321768 pkt (dropped 290, overlimits 0 requeues 24)
backlog 0b 0p requeues 24
maxpacket 3028 drop_overlimit 0 new_flow_count 408 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc noqueue 0: dev br-lan root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev eth0.1 root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev eth0.2 root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc cake 801f: dev pppoe-wan root refcnt 2 bandwidth 425Kbit besteffort dual-srchost nat nowash no-ack-filter split-gso rtt 100.0ms atm overhead 44
Sent 6848901 bytes 58285 pkt (dropped 3551, overlimits 52494 requeues 0)
backlog 0b 0p requeues 0
memory used: 463680b of 4Mb
capacity estimate: 425Kbit
min/max network layer size: 40 / 1492
min/max overhead-adjusted size: 106 / 1696
average network hdr offset: 0
Tin 0
thresh 425Kbit
target 42.7ms
interval 137.7ms
pk_delay 13.4ms
av_delay 2.5ms
sp_delay 24us
backlog 0b
pkts 61836
bytes 7762147
way_inds 3050
way_miss 691
way_cols 0
drops 3551
marks 0
ack_drop 0
sp_flows 1
bk_flows 1
un_flows 0
max_len 5840
quantum 300
qdisc ingress ffff: dev pppoe-wan parent ffff:fff1 ----------------
Sent 94813529 bytes 104548 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc cake 8020: dev ifb4pppoe-wan root refcnt 2 bandwidth 8500Kbit besteffort dual-dsthost nat wash ingress no-ack-filter split-gso rtt 100.0ms atm overhead 44
Sent 92884570 bytes 103164 pkt (dropped 1359, overlimits 72013 requeues 0)
backlog 34450b 25p requeues 0
memory used: 497952b of 4Mb
capacity estimate: 8500Kbit
min/max network layer size: 38 / 1492
min/max overhead-adjusted size: 106 / 1696
average network hdr offset: 0
Tin 0
thresh 8500Kbit
target 5.0ms
interval 100.0ms
pk_delay 44.8ms
av_delay 25.8ms
sp_delay 3.6ms
backlog 34450b
pkts 104548
bytes 94813529
way_inds 4699
way_miss 691
way_cols 0
drops 1359
marks 0
ack_drop 0
sp_flows 1
bk_flows 1
un_flows 0
max_len 1492
quantum 300
in-game latency before and then after loading a video on another device:
