How to correctly set Receive Side Scaling (RSS)

[MatrixQW]

Sorry I misstyped that, enabled would be
Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
DisableTaskOffload 0

I'm wondering about this because on this current setup I wanted to use this RSS optimization but can't use TaskOffloads enabled, it's fine for browsing but for games and mostly in CPU bound games oddly it messes with the gameplay pacing games feel slowed down like something is blottlenecking.

This motherboard comes with Intel I219-V network card, on the first years I remember after installing the drivers on advanced tab of network settings there would be an option for enabling RSS but with the latest drivers that option is no longer there.

If I force it and do it from registry a entry shows up in the network card advanced tab as "no description"

"The Intel® Ethernet Connection 82579, I217, I218, and I219 Network Adapters do not support Message Signaled Interrupts (MSI-X), multiple receive queues are thus handled by a single CPU core.
This prevents the use of these network connections in SMB-Multichannel configurations."

Intel dropped RSS support in their drivers, you need to add the registry keys manually.
I think if you set RSS queues = 1 you should be able to use it.

I225-V: Check Anonymous's 09-27-2023 comment. If after adding the keys it still doesn't work, check if you have that key "ReceiveScalingMode" and maybe remove it or set it to 0. I don't have that key.

Here are my keys in screenshots and a zip with a reg file you can edit, in case you missed something:

[JimCarry]

dont care about limit, it not do better.
you say it default 1, that means driver can use only 1 core for interrupt.
with default settings, what cores uses ndis.sys for dpc and isr traffic?

i never wrote that wtf?

[Slender]

dont care about limit, it not do better.
you say it default 1, that means driver can use only 1 core for interrupt.
with default settings, what cores uses ndis.sys for dpc and isr traffic?

i never wrote that wtf?

For all this time I have been on this forum, I have never learned to respond to messages correctly.

[Slender]

Sorry I misstyped that, enabled would be
Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
DisableTaskOffload 0

I'm wondering about this because on this current setup I wanted to use this RSS optimization but can't use TaskOffloads enabled, it's fine for browsing but for games and mostly in CPU bound games oddly it messes with the gameplay pacing games feel slowed down like something is blottlenecking.

This motherboard comes with Intel I219-V network card, on the first years I remember after installing the drivers on advanced tab of network settings there would be an option for enabling RSS but with the latest drivers that option is no longer there.

If I force it and do it from registry a entry shows up in the network card advanced tab as "no description"

"The Intel® Ethernet Connection 82579, I217, I218, and I219 Network Adapters do not support Message Signaled Interrupts (MSI-X), multiple receive queues are thus handled by a single CPU core.
This prevents the use of these network connections in SMB-Multichannel configurations."

Intel dropped RSS support in their drivers, you need to add the registry keys manually.
I think if you set RSS queues = 1 you should be able to use it.

I225-V: Check Anonymous's 09-27-2023 comment. If after adding the keys it still doesn't work, check if you have that key "ReceiveScalingMode" and maybe remove it or set it to 0. I don't have that key.

Here are my keys in screenshots and a zip with a reg file you can edit, in case you missed something:

new intel drivers stop supporting rrs and ndis.sys driver, now it wdf01000.sys (i think that not support rss)

[JimCarry]

dont care about limit, it not do better.
you say it default 1, that means driver can use only 1 core for interrupt.
with default settings, what cores uses ndis.sys for dpc and isr traffic?

i never wrote that wtf?

For all this time I have been on this forum, I have never learned to respond to messages correctly.

[UFO_Pilot]

@MatrixQW and @Anonymous thank's for the help, appreciated.

I don't think I can make RSS work tried for hours added keys deleted some, tried different drivers 1 2 or 4 Queues and the InderectionTables never show up on screen.

[JimCarry]

@MatrixQW and @Anonymous thank's for the help, appreciated.

I don't think I can make RSS work tried for hours added keys deleted some, tried different drivers 1 2 or 4 Queues and the InderectionTables never show up on screen.

i have realtek nic and i dont use it,i think i should also turn off msi mode for nic.

[UFO_Pilot]

@MatrixQW and @Anonymous thank's for the help, appreciated.

I don't think I can make RSS work tried for hours added keys deleted some, tried different drivers 1 2 or 4 Queues and the InderectionTables never show up on screen.

i have realtek nic and i dont use it,i think i should also turn off msi mode for nic.

If you don't use it you should just disable it in Bios, assuming its onboard and you are using something not onboard.

My Nic shows as msi on MSI_util but in reality it is not.

We can run this to make sure: Get-NetAdapterHardwareInfo | fl

[JimCarry]

@MatrixQW and @Anonymous thank's for the help, appreciated.

I don't think I can make RSS work tried for hours added keys deleted some, tried different drivers 1 2 or 4 Queues and the InderectionTables never show up on screen.

i have realtek nic and i dont use it,i think i should also turn off msi mode for nic.

If you don't use it you should just disable it in Bios, assuming its onboard and you are using something not onboard.

My Nic shows as msi on MSI_util but in reality it is not.

We can run this to make sure: Get-NetAdapterHardwareInfo | fl

what should i disable in bios i dont get it ?i have on board realtek nic.

[UFO_Pilot]

@MatrixQW and @Anonymous thank's for the help, appreciated.

I don't think I can make RSS work tried for hours added keys deleted some, tried different drivers 1 2 or 4 Queues and the InderectionTables never show up on screen.

i have realtek nic and i dont use it,i think i should also turn off msi mode for nic.

If you don't use it you should just disable it in Bios, assuming its onboard and you are using something not onboard.

My Nic shows as msi on MSI_util but in reality it is not.

We can run this to make sure: Get-NetAdapterHardwareInfo | fl

what should i disable in bios i dont get it ?i have on board realtek nic.

I'm sorry for my confusion, what don't you use RSS or the realtek nic?