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derdeagle
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Joined: Sat Jun 30, 2018 6:58 pm

Higher CPU usage on RB3011 after upgrade to ROS 7

Tue Aug 02, 2022 2:11 pm

Hi all,

On June 16 2022 I updated my Mikrotik devices from the (at this time) latest ROS version 6 (I can't remember which one it was exactly) to ROS 7.3.1 (running 7.4 currently).
After that time I noticed an increased CPU load on the device constantly.

Before update constant CPU usage: between 1% and 3%
After update constant CPU usage: between 4% and 7%

Please also see the screenshot attached.
screenshot_2022-08-02_13-05-19_without-names.png
Is there anything known regarding increased CPU usage after updating to version 7?
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Last edited by derdeagle on Wed Aug 03, 2022 11:28 am, edited 1 time in total.
 
elbob2002
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Re: High CPU usage on RB3011 after upgrade to ROS 7

Tue Aug 02, 2022 2:25 pm

It's a different Kernel with a big rewrite of some of the RouterOS internals so it's quite possible some extra resources are needed.

It also depends on how you router is configured. Fasttrack, queues etc.

Also between 4 and 7% hardly qualifies as high CPU usage!

Your CPU usage seems quite comparable to my RB3011
RB3011CPU.png
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nescafe2002
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Re: High CPU usage on RB3011 after upgrade to ROS 7

Tue Aug 02, 2022 3:42 pm

Can confirm, this is the CPU usage from a RB3011 upgraded from v6.48.6 to v7.4 on August 1, 20:20:

dude_4E5l0pdPpl.png
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derdeagle
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Re: High CPU usage on RB3011 after upgrade to ROS 7

Wed Aug 03, 2022 11:04 am

@elbob2002
Yes, that does not qualify as "high load" - you are right there. I was a bit further in my mind because it reaches > 80% CPU usage during peaks (backup time e.g.).
I don't have any fasttracks or queues.
I currently don't see it critically but just wanted to know if this is a known status or if it only affects me and I have to dig into the configuration (reworking this either way currently).
 
nbroad
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Re: Higher CPU usage on RB3011 after upgrade to ROS 7

Fri Aug 12, 2022 12:48 am

I just fixed this by upgrading RouterOS and firmware to 7.4.1 on RB3011UiAS
routeros-cpu.PNG
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danilzky
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Joined: Thu Mar 31, 2022 2:51 pm

Re: Higher CPU usage on RB3011 after upgrade to ROS 7

Fri Aug 12, 2022 6:24 am

Same issue. From 50-60 cpu usage of our 3011 to 80-90, running 80+ pppoe sessions(no firewall no nat on the router). Reverted back to ro6

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