Hi Pete

yes i find this patch and add to cake source

and in my test with hfsc and cake

i use

tc qdisc add dev eth1 root handle 1: hfsc default 1

tc class add dev eth1 parent 1: classid 1:1 hfsc ls rate 7mbit ul rate 7mbit

tc qdisc add dev eth1 parent 1:1 cake besteffort bandwidth 5mbit datacentre nat memlimit 32m

user speed is 5mbit and on hfsc i add extra 2 mbit to give free limit for cake.

and work fine but in dmesg get :

[44835.530255] qdisc_peek_len: cake qdisc 8017: is non-work-conserving?

[44840.689403] HFSC: cake qdisc 8012: is non-work-conserving?

user receive 5mbit for upload and download and fine work.

mai be need to add no-split-gso to config

but after add have same error on dmesg :

[44955.641391] HFSC: cake qdisc 8021: is non-work-conserving?

[44955.958904] HFSC: cake qdisc 801C: is non-work-conserving?

but work fine and will remove warrning from kernel source to not list in dmesg :)

i try same config with drr to remove speed limit from hfsc and use only cake bandwidth and work same fine but in time of work machine crash .

Best Regards,

Martin

On Thu, Mar 7, 2019 at 8:05 PM Pete Heist <pete@heistp.net> wrote:

If it’s just straight cake under hfsc with a rate here’s what I do (obviously replace 100mbit with your rate):

tc qdisc add dev eth1 root handle 1: hfsc default 1
tc class add dev eth1 parent 1: classid 1:1 hfsc ls rate 100mbit ul rate 100mbit
tc qdisc add dev eth1 parent 1:1 cake

Also, there were recent fixes to the Linux kernel and cake regarding GSO splitting. You may find with hfsc on older kernels that you have to use “cake no-split-gso” to avoid lockups.

On Mar 7, 2019, at 12:32 PM, Martin Zaharinov <micron10@gmail.com> wrote:

thanks i will try

On Thu, Mar 7, 2019, 13:25 Toke Høiland-Jørgensen <toke@redhat.com> wrote:
Martin Zaharinov <micron10@gmail.com> writes:

> please write my one sample line with this

From your script you'd need to use:

tc qdisc add dev eth1 parent 1:0004 cake

instead of

tc qdisc add dev eth1 parent 1:0004 sfq perturb 10

And adjust your HFSC parameter to shape to the rate you want. Can't help
you with that part, sorry, you'll need to go read up on shaping with
HFSC (or I'd suggest maybe using HTB instead as that is simpler to
configure). There are loads of tutorials for that online :)

-Toke

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