[Cake] cake memory consumption

Sebastian Gottschall s.gottschall at newmedia-net.de
Mon Sep 16 09:25:33 EDT 2019

Am 16.09.2019 um 14:08 schrieb Toke Høiland-Jørgensen:
> Sebastian Gottschall <s.gottschall at newmedia-net.de> writes:
>> after we found out serious out of memory issues on smaller embedded
>> devices (128 mb ram) we made some benchmarks with different schedulers
>> with the result that cake takes a serious amount of memory. we use the
>> out of tree cake module and we use it class based since we have complex
>> methods of doing qos per interface, per mac addresse or even per
>> ip/network. so its not just simple cake on a single interface solution.
>> we made some benchmarks with different schedulers. does anybody have a
>> solution for making that better?
>> HTB/FQ_CODEL ------- 62M
>> HTB/SFQ ------- 62M
>> HTB/PIE ------- 62M
>> HTB/FQ_CODEL_FAST ------- 67M
>> HTB/CAKE -------111M
>> HFSC/FQ_CODEL_FAST ------- 47M
>> HTB/PIE ------- 49M
>> HTB/SFQ ------- 50M
>> HFSC /FQ_CODEL ------- 52M
>> HFSC/CAKE -------109M
> How are you measuring the memory usage, and what is your full config for
> each setup? :)
me? nothing. i requested this test from a reporter and he uses just free 
/ top. so there is a error tollerance.

but it shows a significant difference between cake and fq_codel etc. 
cake is doing a OOM at the end

for the full report including config screenshots see this 
https://svn.dd-wrt.com/ticket/6798#comment:14. it shows also the qos 
setup which i can use to reproduce and to
print out the full tc ruleset if required (which it surelly is for you). 
if you want i will recreate this setup and send the tc rules on this list

> -Toke

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