Hy,
I`m about to try the SQM QoS function of OpenWRT.
My Problem is that it makes my bufferbloat even worse.
i read many threads about it but simply cant get it right.
What I have noticed so far is that the bufferbloat only sinks significantly when I specify a fifth of my available bandwidth for download.
My ISP gives me 200down and 20up.
The CPU is bored at such speeds, that can't be the reason.
irqbalance does its job exactly as it should
here are my settings:
Internet through Cable
cat /etc/config/sqm:
Summary
config queue
option debug_logging '0'
option verbosity '5'
option qdisc_advanced '1'
option squash_dscp '0'
option squash_ingress '0'
option ingress_ecn 'ECN'
option egress_ecn 'ECN'
option qdisc_really_really_advanced '1'
option linklayer 'ethernet'
option overhead '18'
option linklayer_advanced '1'
option tcMTU '2047'
option tcTSIZE '128'
option linklayer_adaptation_mechanism 'default'
option iqdisc_opts 'nat dual-dsthost ingress'
option eqdisc_opts 'nat dual-srchost'
option qdisc 'cake'
option script 'piece_of_cake.qos'
option tcMPU '64'
option interface 'eth0'
option enabled '1'
option upload '17500'
option download '100000'
tc -s qdisc:
Summary
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 cake 8045: dev eth0 root refcnt 9 bandwidth 17500Kbit besteffort dual-srchost nat nowash no-ack-filter split-gso rtt 100ms noatm overhead 18 mpu 64
Sent 15030949 bytes 122176 pkt (dropped 60, overlimits 145721 requeues 83)
backlog 0b 0p requeues 83
memory used: 103680b of 4Mb
capacity estimate: 17500Kbit
min/max network layer size: 28 / 1500
min/max overhead-adjusted size: 64 / 1518
average network hdr offset: 14
Tin 0
thresh 17500Kbit
target 5ms
interval 100ms
pk_delay 473us
av_delay 122us
sp_delay 11us
backlog 0b
pkts 122247
bytes 15129196
way_inds 265
way_miss 1126
way_cols 0
drops 60
marks 0
ack_drop 0
sp_flows 1
bk_flows 1
un_flows 0
max_len 10598
quantum 534
qdisc ingress ffff: dev eth0 parent ffff:fff1 ----------------
Sent 398497564 bytes 317713 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc mq 0: dev eth1 root
Sent 124614928232 bytes 85140352 pkt (dropped 11, overlimits 0 requeues 6360)
backlog 0b 0p requeues 6360
qdisc fq_codel 0: dev eth1 parent :4 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 32Mb ecn drop_batch 64
Sent 29049271973 bytes 20211362 pkt (dropped 0, overlimits 0 requeues 1244)
backlog 0b 0p requeues 1244
maxpacket 22710 drop_overlimit 0 new_flow_count 34820 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth1 parent :3 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 32Mb ecn drop_batch 64
Sent 37274124553 bytes 24973337 pkt (dropped 0, overlimits 0 requeues 1715)
backlog 0b 0p requeues 1715
maxpacket 24224 drop_overlimit 0 new_flow_count 50598 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth1 parent :2 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 32Mb ecn drop_batch 64
Sent 27474427477 bytes 19123662 pkt (dropped 0, overlimits 0 requeues 1331)
backlog 0b 0p requeues 1331
maxpacket 13626 drop_overlimit 0 new_flow_count 22802 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth1 parent :1 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 32Mb ecn drop_batch 64
Sent 30817104229 bytes 20831991 pkt (dropped 11, overlimits 0 requeues 2070)
backlog 0b 0p requeues 2070
maxpacket 22710 drop_overlimit 0 new_flow_count 26021 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc mq 0: dev eth2 root
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc fq_codel 0: dev eth2 parent :4 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 32Mb ecn drop_batch 64
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth2 parent :3 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 32Mb ecn drop_batch 64
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth2 parent :2 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 32Mb ecn drop_batch 64
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth2 parent :1 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 32Mb ecn drop_batch 64
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 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 wlan0 root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc cake 8046: dev ifb4eth0 root refcnt 2 bandwidth 100Mbit besteffort dual-dsthost nat nowash ingress no-ack-filter split-gso rtt 100ms noatm overhead 18 mpu 64
Sent 408036506 bytes 316816 pkt (dropped 897, overlimits 358130 requeues 0)
backlog 0b 0p requeues 0
memory used: 810380b of 5000000b
capacity estimate: 100Mbit
min/max network layer size: 46 / 1500
min/max overhead-adjusted size: 64 / 1518
average network hdr offset: 14
Tin 0
thresh 100Mbit
target 5ms
interval 100ms
pk_delay 12.8ms
av_delay 7.2ms
sp_delay 7us
backlog 0b
pkts 317713
bytes 409394442
way_inds 19049
way_miss 733
way_cols 0
drops 897
marks 0
ack_drop 0
sp_flows 0
bk_flows 1
un_flows 0
max_len 39364
quantum 1514
cat /proc/cpuinfo:
Summary
processor : 0
vendor_id : AuthenticAMD
cpu family : 22
model : 48
model name : AMD GX-412TC SOC
stepping : 1
microcode : 0x7030105
cpu MHz : 598.841
cache size : 2048 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good acc_power nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt topoext perfctr_nb bpext ptsc perfctr_llc cpb hw_pstate ssbd vmmcall bmi1 xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale flushbyasid decodeassists pausefilter pfthreshold overflow_recov
bugs : fxsave_leak sysret_ss_attrs null_seg spectre_v1 spectre_v2 spec_store_bypass
bogomips : 1996.20
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate cpb acc_power [13]
processor : 1
vendor_id : AuthenticAMD
cpu family : 22
model : 48
model name : AMD GX-412TC SOC
stepping : 1
microcode : 0x7030105
cpu MHz : 598.828
cache size : 2048 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 4
apicid : 1
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good acc_power nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt topoext perfctr_nb bpext ptsc perfctr_llc cpb hw_pstate ssbd vmmcall bmi1 xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale flushbyasid decodeassists pausefilter pfthreshold overflow_recov
bugs : fxsave_leak sysret_ss_attrs null_seg spectre_v1 spectre_v2 spec_store_bypass
bogomips : 1996.20
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate cpb acc_power [13]
processor : 2
vendor_id : AuthenticAMD
cpu family : 22
model : 48
model name : AMD GX-412TC SOC
stepping : 1
microcode : 0x7030105
cpu MHz : 598.818
cache size : 2048 KB
physical id : 0
siblings : 4
core id : 2
cpu cores : 4
apicid : 2
initial apicid : 2
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good acc_power nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt topoext perfctr_nb bpext ptsc perfctr_llc cpb hw_pstate ssbd vmmcall bmi1 xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale flushbyasid decodeassists pausefilter pfthreshold overflow_recov
bugs : fxsave_leak sysret_ss_attrs null_seg spectre_v1 spectre_v2 spec_store_bypass
bogomips : 1996.20
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate cpb acc_power [13]
processor : 3
vendor_id : AuthenticAMD
cpu family : 22
model : 48
model name : AMD GX-412TC SOC
stepping : 1
microcode : 0x7030105
cpu MHz : 598.800
cache size : 2048 KB
physical id : 0
siblings : 4
core id : 3
cpu cores : 4
apicid : 3
initial apicid : 3
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good acc_power nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt topoext perfctr_nb bpext ptsc perfctr_llc cpb hw_pstate ssbd vmmcall bmi1 xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale flushbyasid decodeassists pausefilter pfthreshold overflow_recov
bugs : fxsave_leak sysret_ss_attrs null_seg spectre_v1 spectre_v2 spec_store_bypass
bogomips : 1996.20
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate cpb acc_power [13]
cat /etc/os-release:
Summary
NAME="OpenWrt"
VERSION="SNAPSHOT"
ID="openwrt"
ID_LIKE="lede openwrt"
PRETTY_NAME="OpenWrt SNAPSHOT"
VERSION_ID="snapshot"
HOME_URL="https://openwrt.org/"
BUG_URL="https://bugs.openwrt.org/"
SUPPORT_URL="https://forum.openwrt.org/"
BUILD_ID="r17466-4d0883c011"
OPENWRT_BOARD="x86/64"
OPENWRT_ARCH="x86_64"
OPENWRT_TAINTS="no-all"
OPENWRT_DEVICE_MANUFACTURER="OpenWrt"
OPENWRT_DEVICE_MANUFACTURER_URL="https://openwrt.org/"
OPENWRT_DEVICE_PRODUCT="Generic"
OPENWRT_DEVICE_REVISION="v0"
OPENWRT_RELEASE="OpenWrt SNAPSHOT r17466-4d0883c011"
DSLReport without SQM:
DSLReport with SQM set to half of avail. Bandwitdh: