[Bloat] [Codel] fq_"codel" in apple's gear

Sebastian Moeller moeller0 at gmx.de
Sun Oct 15 09:09:29 EDT 2023


Hi Dave,



> On Oct 14, 2023, at 21:46, Dave Taht <dave.taht at gmail.com> wrote:
> 
> thank you! A packet capture, however, would be more revealing...

will try to get a packet capture later, when the rest of the users are a sleep...

But I want to re-iterate 12.7 is not a recent macos version by any account, so the data will not be all that extrapolatable...

Regards
	Sebastian


> 
> On Sat, Oct 14, 2023 at 12:44 PM Sebastian Moeller <moeller0 at gmx.de> wrote:
>> 
>> Hi Dave,
>> 
>> 
>>> On Oct 14, 2023, at 21:01, Dave Taht <dave.taht at gmail.com> wrote:
>>> 
>>> netstat -I en0 -qq
>> 
>> Here is a bit of output from macosx monterey 12.7 (on intel hardware). I know this is not really recent,  ut it is the most recent I have available...
>> 
>> This is on an realtek based USB3 ethernet dongle that used to support 1 Gbps, but at from macosx update on it is stuck on 100Mbps FastEthernet...
>> 
>> 
>> Here is the output after a flent test:
>> 
>> Out of my "--test-parameter markings=CS0,CS1,CS2,CS3,CS4,CS5,CS6,CS7" it seems only CS1 was honored and put into BK the rest all ended up in BE...
>> I have zero clue what macos uses to steer packets into the different classes, might be DSCP alone, but then at least using some more exotic ones than boring CS6/CS7
>> No idea what CTL is, the average packet size mist be around 67 bytes...
>> 
>> 
>> macbook:CAKE-autorate user$ netstat -I en3 -qq
>> en3:
>>     [ sched:  FQ_CODEL  qlength:    0/128 ]
>>     [ pkts:     522515  bytes:  334464372  dropped pkts:      0 bytes:      0 ]
>> =====================================================
>>     [ pri: CTL (0)     srv_cl: 0x480190        quantum: 605    drr_max: 8 ]
>>     [ queued pkts: 0   bytes: 0 ]
>>     [ dequeued pkts: 292918    bytes: 19787064 ]
>>     [ budget: 0        target qdelay: 10.00 msec       update interval:100.00 msec ]
>>     [ flow control: 0  feedback: 0     stalls: 0       failed: 0       overwhelming: 0 ]
>>     [ drop overflow: 0 early: 0        memfail: 0      duprexmt:0 ]
>>     [ flows total: 0   new: 0  old: 0 ]
>>     [ throttle on: 0   off: 0  drop: 0 ]
>>     [ compressible pkts: 0 compressed pkts: 0]
>> =====================================================
>>     [ pri: VO (1)      srv_cl: 0x400180        quantum: 605    drr_max: 8 ]
>>     [ queued pkts: 0   bytes: 0 ]
>>     [ dequeued pkts: 0 bytes: 0 ]
>>     [ budget: 0        target qdelay: 10.00 msec       update interval:100.00 msec ]
>>     [ flow control: 0  feedback: 0     stalls: 0       failed: 0       overwhelming: 0 ]
>>     [ drop overflow: 0 early: 0        memfail: 0      duprexmt:0 ]
>>     [ flows total: 0   new: 0  old: 0 ]
>>     [ throttle on: 0   off: 0  drop: 0 ]
>>     [ compressible pkts: 0 compressed pkts: 0]
>> =====================================================
>>     [ pri: VI (2)      srv_cl: 0x380100        quantum: 3028   drr_max: 6 ]
>>     [ queued pkts: 0   bytes: 0 ]
>>     [ dequeued pkts: 0 bytes: 0 ]
>>     [ budget: 0        target qdelay: 10.00 msec       update interval:100.00 msec ]
>>     [ flow control: 0  feedback: 0     stalls: 0       failed: 0       overwhelming: 0 ]
>>     [ drop overflow: 0 early: 0        memfail: 0      duprexmt:0 ]
>>     [ flows total: 0   new: 0  old: 0 ]
>>     [ throttle on: 0   off: 0  drop: 0 ]
>>     [ compressible pkts: 0 compressed pkts: 0]
>> =====================================================
>>     [ pri: RV (3)      srv_cl: 0x300110        quantum: 3028   drr_max: 6 ]
>>     [ queued pkts: 0   bytes: 0 ]
>>     [ dequeued pkts: 0 bytes: 0 ]
>>     [ budget: 0        target qdelay: 10.00 msec       update interval:100.00 msec ]
>>     [ flow control: 0  feedback: 0     stalls: 0       failed: 0       overwhelming: 0 ]
>>     [ drop overflow: 0 early: 0        memfail: 0      duprexmt:0 ]
>>     [ flows total: 0   new: 0  old: 0 ]
>>     [ throttle on: 0   off: 0  drop: 0 ]
>>     [ compressible pkts: 0 compressed pkts: 0]
>> =====================================================
>>     [ pri: AV (4)      srv_cl: 0x280120        quantum: 3028   drr_max: 6 ]
>>     [ queued pkts: 0   bytes: 0 ]
>>     [ dequeued pkts: 0 bytes: 0 ]
>>     [ budget: 0        target qdelay: 10.00 msec       update interval:100.00 msec ]
>>     [ flow control: 0  feedback: 0     stalls: 0       failed: 0       overwhelming: 0 ]
>>     [ drop overflow: 0 early: 0        memfail: 0      duprexmt:0 ]
>>     [ flows total: 0   new: 0  old: 0 ]
>>     [ throttle on: 0   off: 0  drop: 0 ]
>>     [ compressible pkts: 0 compressed pkts: 0]
>> =====================================================
>>     [ pri: OAM (5)     srv_cl: 0x200020        quantum: 1514   drr_max: 4 ]
>>     [ queued pkts: 0   bytes: 0 ]
>>     [ dequeued pkts: 0 bytes: 0 ]
>>     [ budget: 0        target qdelay: 10.00 msec       update interval:100.00 msec ]
>>     [ flow control: 0  feedback: 0     stalls: 0       failed: 0       overwhelming: 0 ]
>>     [ drop overflow: 0 early: 0        memfail: 0      duprexmt:0 ]
>>     [ flows total: 0   new: 0  old: 0 ]
>>     [ throttle on: 0   off: 0  drop: 0 ]
>>     [ compressible pkts: 0 compressed pkts: 0]
>> =====================================================
>>     [ pri: RD (6)      srv_cl: 0x180010        quantum: 1514   drr_max: 4 ]
>>     [ queued pkts: 0   bytes: 0 ]
>>     [ dequeued pkts: 13        bytes: 6684 ]
>>     [ budget: 0        target qdelay: 10.00 msec       update interval:100.00 msec ]
>>     [ flow control: 0  feedback: 0     stalls: 0       failed: 0       overwhelming: 0 ]
>>     [ drop overflow: 0 early: 0        memfail: 0      duprexmt:0 ]
>>     [ flows total: 0   new: 0  old: 0 ]
>>     [ throttle on: 0   off: 0  drop: 0 ]
>>     [ compressible pkts: 0 compressed pkts: 0]
>> =====================================================
>>     [ pri: BE (7)      srv_cl: 0x0     quantum: 1514   drr_max: 4 ]
>>     [ queued pkts: 0   bytes: 0 ]
>>     [ dequeued pkts: 225368    bytes: 314071428 ]
>>     [ budget: 0        target qdelay: 10.00 msec       update interval:100.00 msec ]
>>     [ flow control: 0  feedback: 0     stalls: 0       failed: 0       overwhelming: 0 ]
>>     [ drop overflow: 0 early: 0        memfail: 0      duprexmt:0 ]
>>     [ flows total: 0   new: 0  old: 0 ]
>>     [ throttle on: 0   off: 0  drop: 0 ]
>>     [ compressible pkts: 0 compressed pkts: 0]
>> =====================================================
>>     [ pri: BK (8)      srv_cl: 0x100080        quantum: 1514   drr_max: 2 ]
>>     [ queued pkts: 0   bytes: 0 ]
>>     [ dequeued pkts: 3831      bytes: 576846 ]
>>     [ budget: 0        target qdelay: 10.00 msec       update interval:100.00 msec ]
>>     [ flow control: 0  feedback: 0     stalls: 0       failed: 0       overwhelming: 0 ]
>>     [ drop overflow: 0 early: 0        memfail: 0      duprexmt:0 ]
>>     [ flows total: 0   new: 0  old: 0 ]
>>     [ throttle on: 0   off: 0  drop: 0 ]
>>     [ compressible pkts: 0 compressed pkts: 0]
>> =====================================================
>>     [ pri: BK_SYS (9)  srv_cl: 0x80090 quantum: 1514   drr_max: 2 ]
>>     [ queued pkts: 0   bytes: 0 ]
>>     [ dequeued pkts: 385       bytes: 22350 ]
>>     [ budget: 0        target qdelay: 10.00 msec       update interval:100.00 msec ]
>>     [ flow control: 0  feedback: 0     stalls: 0       failed: 0       overwhelming: 0 ]
>>     [ drop overflow: 0 early: 0        memfail: 0      duprexmt:0 ]
>>     [ flows total: 0   new: 0  old: 0 ]
>>     [ throttle on: 0   off: 0  drop: 0 ]
>>     [ compressible pkts: 375 compressed pkts: 0]
>> macbook:CAKE-autorate user$ uname -a
>> Darwin macbook.local 21.6.0 Darwin Kernel Version 21.6.0: Fri Sep 15 16:17:23 PDT 2023; root:xnu-8020.240.18.703.5~1/RELEASE_X86_64 x86_64
>> 
>> 
>> Here is the flent output:
>> 
>> bash-3.2$ echo "IPv4" ; date ; ping -c 10 netperf-eu.bufferbloat.net ; ./run-flent --ipv4 -l 60 -H netperf-eu.bufferbloat.net rrul_var --remote-metadata=root at 192.168.42.1 --test-parameter=cpu_stats_hosts=root at 192.168.42.1 --step-size=.05 --test-parameter bidir_streams=8 --test-parameter markings=CS0,CS1,CS2,CS3,CS4,CS5,CS6,CS7 --test-parameter ping_hosts=1.1.1.1 -D . -t IPv4_SQM_cake_layer-cake_LLA-ETH_OH34_U097pct45500of46719K-D090pct105000of116789K_hms-beagle2_en4TB2_TurrisOmnia-TurrisOS.6.3.2-pppoe-wan-eth2.7_2_bridged-FB7520-OpenWrt-r22256-14334c222e-OutdoorMSAN-VDSL100_2_netperf-eu.bufferbloat.net --log-file
>> IPv4
>> Sat Oct 14 21:19:24 CEST 2023
>> PING demo.tohojo.dk (193.10.227.30): 56 data bytes
>> 64 bytes from 193.10.227.30: icmp_seq=0 ttl=48 time=24.259 ms
>> 64 bytes from 193.10.227.30: icmp_seq=1 ttl=48 time=22.789 ms
>> 64 bytes from 193.10.227.30: icmp_seq=2 ttl=48 time=24.097 ms
>> 64 bytes from 193.10.227.30: icmp_seq=3 ttl=48 time=24.433 ms
>> 64 bytes from 193.10.227.30: icmp_seq=4 ttl=48 time=24.342 ms
>> 64 bytes from 193.10.227.30: icmp_seq=5 ttl=48 time=24.325 ms
>> 64 bytes from 193.10.227.30: icmp_seq=6 ttl=48 time=23.456 ms
>> 64 bytes from 193.10.227.30: icmp_seq=7 ttl=48 time=22.628 ms
>> 64 bytes from 193.10.227.30: icmp_seq=8 ttl=48 time=24.396 ms
>> 64 bytes from 193.10.227.30: icmp_seq=9 ttl=48 time=23.521 ms
>> 
>> --- demo.tohojo.dk ping statistics ---
>> 10 packets transmitted, 10 packets received, 0.0% packet loss
>> round-trip min/avg/max/stddev = 22.628/23.825/24.433/0.649 ms
>> Starting Flent 2.1.1+git.7b931915 using Python 3.10.8.
>> Starting rrul_var test. Expected run time: 70 seconds.
>> Data file written to ./rrul_var-2023-10-14T211934.512820.IPv4_SQM_cake_layer-cake_LLA-ETH_OH34_U097pct45500of46719K-D090pct105000of116789K_hms-beagle2_en4TB2_TurrisOmnia-TurrisOS_6_3_2-pppoe-wan-eth2_7_2_bridged-FB7520-OpenWrt-r22256-14334c222e-OutdoorMSAN-VDSL100.flent.gz
>> 
>> Summary of rrul_var test run from 2023-10-14 19:19:34.512820
>>  Title: 'IPv4_SQM_cake_layer-cake_LLA-ETH_OH34_U097pct45500of46719K-D090pct105000of116789K_hms-beagle2_en4TB2_TurrisOmnia-TurrisOS.6.3.2-pppoe-wan-eth2.7_2_bridged-FB7520-OpenWrt-r22256-14334c222e-OutdoorMSAN-VDSL100_2_netperf-eu.bufferbloat.net'
>> 
>>                                              avg       median       99th %          # data pts
>> Ping (ms) ICMP 1.1.1.1 (extra)    :        13.10        12.90        17.40 ms             1396
>> Ping (ms) avg                     :        27.07          N/A          N/A ms             1639
>> Ping (ms)::ICMP                   :        26.15        26.10        30.70 ms             1399
>> Ping (ms)::UDP 0 (CS0)            :        27.78        27.55        32.13 ms             1639
>> Ping (ms)::UDP 1 (CS1)            :        29.34        29.51        35.09 ms             1639
>> Ping (ms)::UDP 2 (CS2)            :        26.18        26.06        30.56 ms             1639
>> Ping (ms)::UDP 3 (CS3)            :        26.22        26.06        30.77 ms             1639
>> Ping (ms)::UDP 4 (CS4)            :        26.20        25.98        30.93 ms             1639
>> Ping (ms)::UDP 5 (CS5)            :        26.20        26.06        31.33 ms             1639
>> Ping (ms)::UDP 6 (CS6)            :        28.13        28.11        32.86 ms             1639
>> Ping (ms)::UDP 7 (CS7)            :        26.51        26.44        31.39 ms             1639
>> TCP download avg                  :        11.33          N/A          N/A Mbits/s        1639
>> TCP download sum                  :        90.62          N/A          N/A Mbits/s        1639
>> TCP download::0 (CS0)             :        11.39        11.25        17.48 Mbits/s        1639
>> TCP download::1 (CS1)             :        10.66        10.21        28.97 Mbits/s        1639
>> TCP download::2 (CS2)             :        12.17        11.99        18.87 Mbits/s        1639
>> TCP download::3 (CS3)             :        11.29        11.06        18.27 Mbits/s        1639
>> TCP download::4 (CS4)             :        11.87        11.34        23.51 Mbits/s        1639
>> TCP download::5 (CS5)             :        10.51        10.49        16.58 Mbits/s        1639
>> TCP download::6 (CS6)             :        11.37        11.15        18.32 Mbits/s        1639
>> TCP download::7 (CS7)             :        11.36        11.25        16.99 Mbits/s        1639
>> TCP totals                        :       130.00          N/A          N/A Mbits/s        1639
>> TCP upload avg                    :         4.92          N/A          N/A Mbits/s        1639
>> TCP upload sum                    :        39.38          N/A          N/A Mbits/s        1639
>> TCP upload::0 (CS0)               :         5.50         5.48         7.94 Mbits/s        1639
>> TCP upload::1 (CS1)               :         2.13         2.19         2.64 Mbits/s        1639
>> TCP upload::2 (CS2)               :         5.47         5.47         7.13 Mbits/s        1639
>> TCP upload::3 (CS3)               :         5.47         5.48         6.97 Mbits/s        1639
>> TCP upload::4 (CS4)               :         5.47         5.49         7.23 Mbits/s        1639
>> TCP upload::5 (CS5)               :         5.46         5.46         6.83 Mbits/s        1639
>> TCP upload::6 (CS6)               :         4.96         4.95         6.25 Mbits/s        1639
>> TCP upload::7 (CS7)               :         4.92         4.94         6.18 Mbits/s        1639
>> cpu_stats_root at 192.168.42.1::load :         0.40         0.42         0.83                1243
>> bash-3.2$
>> 
>> 
>> 
> 
> 
> -- 
> Oct 30: https://netdevconf.info/0x17/news/the-maestro-and-the-music-bof.html
> Dave Täht CSO, LibreQos



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