I removed the SQM configuration from LuCI, and I see the following output of the tc -s qdisc command:
tc -s qdisc
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 mq 0: dev eth0 root
Sent 297253219678 bytes 291213620 pkt (dropped 0, overlimits 0 requeues 7827)
backlog 0b 0p requeues 7827
qdisc fq_codel 0: dev eth0 parent :5 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64
Sent 61662725327 bytes 62911691 pkt (dropped 0, overlimits 0 requeues 761)
backlog 0b 0p requeues 761
maxpacket 1514 drop_overlimit 0 new_flow_count 12767 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :4 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64
Sent 60839991932 bytes 57664795 pkt (dropped 0, overlimits 0 requeues 1069)
backlog 0b 0p requeues 1069
maxpacket 1514 drop_overlimit 0 new_flow_count 28619 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :3 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64
Sent 57140031034 bytes 55979009 pkt (dropped 0, overlimits 0 requeues 713)
backlog 0b 0p requeues 713
maxpacket 1514 drop_overlimit 0 new_flow_count 29053 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :2 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64
Sent 59929689432 bytes 59624043 pkt (dropped 0, overlimits 0 requeues 4885)
backlog 0b 0p requeues 4885
maxpacket 1514 drop_overlimit 0 new_flow_count 27013 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :1 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64
Sent 57680781953 bytes 55034082 pkt (dropped 0, overlimits 0 requeues 399)
backlog 0b 0p requeues 399
maxpacket 1514 drop_overlimit 0 new_flow_count 4902 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc noqueue 0: dev br-DATA_HOME root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev eth0.200 root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev br-MRA root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev eth0.220 root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev br-UniFi_CFG 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 br-UniFi_MGMT 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 noqueue 0: dev br-VOICE_HOME root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev eth0.250 root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev eth0.255 root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev eth0.10 root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev WG root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
I'd like to understand where the fq_codel statistics come from, since I had nothing configured in LuCI under SQM when the above output of the tc -s qdisc command was copied. I'm referring to things like reques, new_flow_count, etc. under dev eth0 root, dev eth0 parent :5, dev eth0 parent :4, dev eth0 parent :3, dev eth0 parent :2, and dev eth0 parent :1
I'd also like to know what these entries (dev eth0 parent :5, dev eth0 parent :4, etc. mean)
The file /etc/config/sqm was present but empty after I disabled SQM in LuCI.
And another question I have is, If some of these qdisc fq_codel entries are left over from some previous configuration that I may have tried, is there a safe way to remove them?
I have re-enabled CAKE since I copied that output of the tc -s qdisc command.
Thank you.