Maximum number of RSS Queues performance

[shoober420]

Has anyone else noticed that using "8 Queues" for the "Maximum number of RSS Queues" under NIC properties slows down your internet speeds? I have a 13900kf configured with E-Cores and HT disabled, so I have 8 active cores running, which correlates with setting this value to "8 Queues".

Could someone else test this out and see if it matches the same behavior as im experiencing? I used this website to benchmark.

https://www.waveform.com/tools/bufferbloat

Test 2:

on my 13900kf, i enabled the e-cores, which bumped up my core count to 24 (8p / 16e). i went ahead and set 8 RSS queues again to give it another shot, and it borked the internet with even 24 cores running. very very odd. im leaving it at 4 rss queues. if anyone feels like experimenting and trying out 8 rss queues, please do and post your findings.

[Philip]

I would just use fewer queues if it works better for you, it is also dependent on the NIC driver and other factors, not necessarily only the cores.

[shoober420]

I leave it at 4 queues as opposed to 8 queues. I have a Marvell AQtion NIC. I forgot the model number, but its a recent on-board NIC from an Aorus Master Z790 with the latest drivers. Have you ever personally found 8 queues to work better with a certain brand? Would 8 queues be more for a corporate NIC, rather than home NICs generally being 4 queues?

[Philip]

I would try 8 queues with a separate PCI brand name NIC like Intel I suppose, but 4 queues is perfectly fine.

[shoober420]

i see, so its still better to have a dedicated NIC. i also have a older machine that has a Intel NIC that i used to have a dedicted card for. i thought it was the same thing, but its good to know that onboard NIC is worse than dedicated even if its the same chipset.