High CPU usage process irq/46-nvidia

[albertom8]

Hi,

I have an ETH rig with several NVIDIA cards, 2 1660S, 2 2060S and one 2080S
One of the 2060S gives 44.53 MH but the other just reaches 37. I know it’s the MEM overclock, as I cannot go beyond 1100, when the other goes up to 2200. And I cannot go further because once I increase MEM in that card, one process irq/46-nvida starts taking 100% of CPU, affecting to hashrate of all of the other cards as well. I have to reboot to get back to normal.
Anyone knows why this irq proc. makes such beheaviour?
My current setup:

Thanks,

Alberto

[vbreizh31]

Hello Alertom,
starting using hiveos since yesterday (my first steps in mining), I have a 3060 ti lhr and the same problem occured for me: each time I apply an OC with freq memory change, CPU goes to 100% in nvidia irq process, increasing the Load Average to the critical 24 limit.
I just figured out it was due to the freq memory change in aonther forum and when I rebooted the rig putting no change on freq memroy, everything fine, mining ETH with a limited hashrate of 35MH while Load Average keeps under 0.2.
NB: I had the issue with both 0.6-208 and 0.6-210 hiveos versions, and with nvidia 460 and 470 drivers…
Let’s see if another guys experiment the same issue. Pending any info, I have to keep the frequency mem untouched.

Kindly,
Vince

[vbreizh31]

Hi Albertom,

I was testing around this problem, tuning again the freq core: in fact the problem of irq/nvidia process going TO 100% CPU appears when you setup the mem frequency too high. I was increasing it from 0 with steps of 200: til 1800 OK, hashrate increases while irq/nvidia process remains stable. At 2000 mem freq update, the issue occured again, process stuck at 100% and rig reboot mandatory. After reboot I changed again to the maximum “allowed” freq value (1800 in my case), and everything mining like a charm (tested with lolminer and nbminer, same good result).

Therefore in my case, irq/nvidia process stuck at 100% CPU cas due to a mem frequency tuning too high.

Hope it can helps, let me know if you have still issues with lower frequencies (starting not setting any mem freq tuning).

Vince

[BSAI]

Similar issue has been observed. When I configured severe OC settings(mostly mem), high cpu usage of irq/nvidia has been observed (by top command) and OS crash.
When I relax OC setting, then I don’t see this issue, so I think it is due to high OC setting and Nvidia driver crash.
I tried on several miners and result was same.