High CPU

[clvk07]

Hi It seems that the AC88U has high CPU since the upgrade to 384.7 (and 72).

21374 1 admin R 1500 0.2 0 49.6 /usr/sbin/acsd

this process shows always 50% of cpu and in the asus screen core 1 or core 2 reach 100% at any given time. How can I identify what is causing this?

 

[bitmonster]

If you are running Merlin, install Entware and then open a SSH terminal and install htop.

Run htop. It's a command line resource monitor.

Sent from my SM-G965F using Tapatalk

 

[john9527]

If you are using auto channel selection on either band, try setting both to a fixed channel.

 

[clvk07]

installed HTOP but seems to give same info as TOP.....

Only running 2.4GHZ band. usually if I kill the process or reboot the rooter it fixes the problem. (until it happens again).

I guess there is no way to know who is using /usr/sbin/acsd?

 

[bitmonster]

Htop is far more rich... Did you sort by CPU usage? What did it say?

Sent from my SM-G965F using Tapatalk

 

[john9527]

I guess there is no way to know who is using /usr/sbin/acsd?

acsd = Auto Channel Selection Daemon...the wireless.....

You might try turning off all your wireless clients, then turning them back on one by one to see if it's a specific client causing problems.

 

[clvk07]

acsd = Auto Channel Selection Daemon...the wireless.....

You might try turning off all your wireless clients, then turning them back on one by one to see if it's a specific client causing problems.

Get It now.... will try that next time if happens

 

[john9527]

@clvk07
I'm just thinking out loud....do you have any clients that were bought in or are set to a different region from your router? Is your router operating in a different region from where it was purchased?

 

[bitmonster]

I'm getting this issue now with Merlin 384.15. CPU running hot with acsd.

Just default wireless settings.

Sent from my SM-G977B using Tapatalk

 

[anonimo]

ACSD is used to scan and select low-interference channels, so if SMART-connect is on and/or auto-channel is selected then setting a fixed channel for each frequency band may alleviate the issue (a cell phone Wi-Fi Analyzer app can help identify the least congested channel). A client, such as a new phone (or older smart-tv), is a more likely culprit than a remote attack.