high cpu usage on gigahub

[Gptechman]

anyone got high cpu usage on their gigahub? since update 2.13 it always been high, this is unusual
cpu load has technically never gotten high since i signed up for fiber, but now it its unexpectedly.
yesterday I've seen the bar go up to 90%

 

[dks]

Thank you for your concern. This is a known issue with the latest 2.13 firmware. It has been reported by users in the past. There is no current solution and no negative effect noted. There is no reason to reduce your WiFi transmission power, unless you wish to, as it will reduce the effective range of your WiFi signal. My own Giga Hub runs at 71% CPU usage with pods while doing nothing except one wired and three wireless (pod) connections. 

[Raka]

Hello, 

Does the modem reboot at 100% load? That is the main concern as I run nightly backups.

Also how high does the 'load number averages' go? I've seen screenshots of 6 and 7 at 100% but mines goes to 100% with as low as 4? When its in the range of 2-3 I'm happy as it is anywhere between 50-70%

These numbers:

Load average

Last minute:2.35

Last 5 minutes:2.25

Last 15 minutes :2.20

[dks]

Thank you for your question. No user has reported the Giga Hub rebooting at 100% loads. If any user has had that happen, I am sure they will speak up. 

[Raka]

That's good to hear. In that case I'll set the transmit power back to how it was. 

Please update this thread once a potential firmware fix is out so users such as myself can provide feedback! 

[dks]

Thank you for your feedback. Bell does take note of issues in the Community Forum. Any feedback or concerns have to go back to the modem manufacturer for any change in the firmware. Bell does not make changes themselves. The current firmware has been in service for about six months. There is no word on if or when a new firmware will be offered. Bell also does not provide release notes for their products. 

[dean701]

Along with the high cpu, there is definitely a memory leak even on 2.14.  As soon as this hits 510MB free, it is very slow until reboot.

[dks]

Can you elaborate on what “very slow” means or looks like? Is it impacting your web browsing, TV or other activity? 

[Pianoman11]

High CPU load (3+) on Giga Hub 2.0 firmware 3.11.3 - persists after cold reboot with 4 devices

Hi,
I'm experiencing persistent high CPU load on my Giga Hub 2.0 and I'm hoping to get some help from the community.

Setup:

Giga Hub 2.0, firmware 3.11.3
Bell Pure Fibre, Montréal area
~44 devices normally connected

The problem:
- The load average is constantly at 3.0+ regardless of what I do. I have tested the following:

Cold reboot (power off 2+ minutes): load immediately returns to 3+
- Disconnected almost all devices, leaving only 4-5 connected: load stays at 3+
- Disabled UPnP and DLNA: no improvement
- Fixed Wi-Fi channels (2.4 GHz: channel 6, 5 GHz: channel 44): no improvement on CPU load

What I've ruled out:

- Not a broadcast storm — captured traffic with tcpdump, traffic is normal for this network size
- Not a specific device causing it — load is high even with nearly everything disconnected
- Not a Wi-Fi channel issue — ACSD was constantly changing channels but fixing them didn't reduce CPU load

Observations from system logs:

- TR-069 connecting to Bell servers on every boot
- ACSD changing Wi-Fi channels repeatedly even after manual channel assignment
- IGMP groups being added/removed constantly

Bell support response:
- Level 1 support says this is normal. I disagree — a load average of 3+ on a freshly rebooted modem with 4 devices connected is not normal by any definition.
- Has anyone else experienced this with firmware 3.11.3 specifically on the Giga Hub 2.0? Is there a newer firmware available that addresses this?

Thank you

[dks]

Thank you for your question. The most current firmware for the Giga Hub 2.0 is 3.11.3. While 44 connected devices is a large number, some sources suggest that between 30 and 50 connected devices is normal before performance might start to degrade. As long as you allow proper ventilation for your Giga Hub, you should be OK. I also see some suggestions that one or two devices may cause high CPU use. You might try to isolate what device that might be and see if disconnection reduces your CPU use.