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Anyone6643
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Joined: Sat May 06, 2023 4:38 pm

High CPU usage on one core in PPPoE concentrator

Sat May 06, 2023 5:19 pm

Hello everyone,

I am facing an issue with one of the cores of my Mikrotik router which is running at 100% CPU usage while the other cores are free. Even when I use fasttrack, it alleviates the problem but the CPU usage still remains elevated.

This router is being used as a PPPoE concentrator with an average of 600 sessions and a traffic rate of 1.4Gbit/s. It is virtualized on a KVM server with a host machine of 48x Intel(R) Xeon(R) CPU E5-2670 v3 @ 2.30GHz and 47GiB RAM. The Mikrotik virtual machine is allocated 10GiB RAM and 32 cores.

Despite having a high-end configuration, the CPU usage remains high only on one core. I have attached some screenshots that might help in identifying the issue.

Can anyone suggest any solution to this problem? Any help would be greatly appreciated.

Thank you.
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RajaMani
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Joined: Wed Mar 16, 2011 7:42 pm

Re: High CPU usage on one core in PPPoE concentrator

Sat May 13, 2023 5:11 pm

i am also facing the same issue on RB4011. But still unable to got any solution :(
 
Anyone6643
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Re: High CPU usage on one core in PPPoE concentrator

Mon May 15, 2023 8:44 pm

i am also facing the same issue on RB4011. But still unable to got any solution :(
I see. I tried almost everything but, nothing can solve this.
 
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loloski
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Joined: Mon Mar 15, 2021 9:10 pm

Re: High CPU usage on one core in PPPoE concentrator

Tue May 23, 2023 7:14 am

You can try vyos or accel-ppp if you are having problems with Mikrotik PPPoE implementation, PPPoE is single thread in linux and among bsd
 
dineshplp
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Posts: 33
Joined: Wed Jan 09, 2008 7:09 am

Re: High CPU usage on one core in PPPoE concentrator

Mon Aug 28, 2023 1:36 pm

I am using version 7.10 on a proxmox host with 18 CPUs. It's doing almost 1 gig of traffic and I don't see issues as yours. CPU sits close to 30 percent and 450 PPPoE sessions.
Using host CPU in the CHR and intel 10G card. Using PCI passthrough for NIC.

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