Am 16.09.2019 um 16:01 schrieb Toke Høiland-Jørgensen:
Sebastian Gottschall <[email protected]> writes:
Am 16.09.2019 um 14:08 schrieb Toke Høiland-Jørgensen:
Sebastian Gottschall <[email protected]> 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.
Ah, I see. So this is just total system memory as reported by top.
vice versa. this is memory usage and not total system memory. (which
would be always 128mb)
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
Yes, please do. The output of 'tc -s qdisc' would be useful as well to
see how much memory CAKE itself thinks it's using...
you will get it will full stats of course (within the next 6 hours. just
woke up right now)
Are you setting the memory_limit in your config or relying on CAKE's
default?
no default has been set. so the auto calculation is used within cake
with the 4 mb limit truncation
-Toke
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