Just a few SQ rules causes noticeable CPU consumption. Is it possible in some way to lower this consumption? Or what to use instead. I could use Queue tree - but in that way I lost possibility to see graphs of individual SQ rules…
Try creating a custom queue type based on the one you have, but with higher packet cache. Try 500 then lower until u get best balance.
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Take a look at your system-routerboard CPU speed settings - depending on your Mikrotik, you may be able to change the CPU clock speed. In general, I have found that the second to the fastest clock speed always works on all mikrotiks I have tested everywhere.
Also - you can use the Ethernet switch chip to hardware bridge Ethernet ports to save on CPU loads. Software bridging always uses much more CPU time.
Also - you may want to consider - are there any router/firewall/queues/anythings that can be offloaded and performed on another server - such as a 3 GHz ROS or other type of server.
I personally consider a Mikrotik with a CPU load over 10 percent as a high-cpu-load, and anything close to 20 percent CPU load as broken.
Keep in mind … High CPU loads (anything above 1) always equals progressive slower network throughput (propagation delay) as the CPU load increases.
North Idaho Tom Jones