[Cake] cake on linux 5.6 32 bit x86 might be broken

[Y]

Hi,Dave
uname -r
5.4.34-1-MANJARO

Cake seeems to work.

Yutaka.

On Sat, 25 Apr 2020 12:09:49 -0700
Dave Taht <dave.taht at gmail.com> wrote:

> the bandwidth parameter is mis-parsed. this is stock kernel, stock 5.6 iproute2
> looks like an alignment bug. Anyone running x86 on 32 bit? anyone
> running this kernel on anything 32bit?
> 
> is 5.4 ok?
> 
> ---------- Forwarded message ---------
> From: elided
> Date: Fri, Apr 24, 2020 at 7:57 PM
> Subject: Re: PSA pt 1: for better videoconferencing at home on slow links
> To: Dave Taht <dave.taht at gmail.com>
> 
> 
> Yo Dave!
> 
> One step forward, two back.
> 
>     Linux kernel 5.6.7.
> 
>     ~# tc -V
>     tc utility, iproute2-ss200330
> 
> This started cake:
> 
>     ~# tc qdisc add dev eth1 root cake bandwidth 160mbps
> 
> But, my score of B for bufferbloat fell to a C!
> 
>     http://www.dslreports.com/speedtest/62801576
> 
> cake seems to be ignoring my bandwidth:
> 
>     catbert:~# tc -s qdisc show dev eth1
>     qdisc cake 8005: root refcnt 2 bandwidth 1280Mbit diffserv3
> triple-isolate nonat nowash no-ack-filter split-gso rtt 100.0ms raw
> overhead 0
>      Sent 591223311 bytes 562082 pkt (dropped 0, overlimits 666624 requeues 0)
>      backlog 0b 0p requeues 0
>      memory used: 377936b of 15140Kb
>      capacity estimate: 1280Mbit
>      min/max network layer size:           42 /    1514
>      min/max overhead-adjusted size:       42 /    1514
>      average network hdr offset:           14
> 
>                        Bulk  Best Effort        Voice
>       thresh         80Mbit     1280Mbit      320Mbit
>       target          5.0ms        5.0ms        5.0ms
>       interval      100.0ms      100.0ms      100.0ms
>       pk_delay          0us          8us          6us
>       av_delay          0us          3us          3us
>       sp_delay          0us          1us          1us
>       backlog            0b           0b           0b
>       pkts                0       447439       114643
>       bytes               0    580864114     10359197
>       way_inds            0        42159         2526
>       way_miss            0         3931        87597
>       way_cols            0           11            0
>       drops               0            0            0
>       marks               0            0            0
>       ack_drop            0            0            0
>       sp_flows            0          247           46
>       bk_flows            0            1            0
>       un_flows            0            0            0
>       max_len             0        36144          998
>       quantum          1514         1514         1514
> 
> Back to reading...
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> Cake at lists.bufferbloat.net
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-- 
Y <intruder_tkyf at yahoo.fr>