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Questions about MSI limits in GoInterruptPolicy
Posted: 23 Apr 2025, 06:34
by dermodemon
1. What are those MSI limit parameters and what are they doing?
2. Can i go higher than a default MSI limit (my XHCI limit is 8, what will happen when i set it to 32 for example)?
3. Why my gpu msi limit is only 1 and XHCI for example is 8?
Re: Questions about MSI limits in GoInterruptPolicy
Posted: 23 Apr 2025, 11:47
by kyube
dermodemon wrote: ↑23 Apr 2025, 06:34
1. What are those MSI limit parameters and what are they doing?
2. Can i go higher than a default MSI limit (my XHCI limit is 8, what will happen when i set it to 32 for example)?
3. Why my gpu msi limit is only 1 and XHCI for example is 8?
https://docs.kernel.org/PCI/msi-howto.html
https://forums.guru3d.com/threads/windo ... ol.378044/
These two threads might help you understand
https://calypto.us
https://github.com/valleyofdoom/PC-Tuning
I would advise
against doing any modification to the driver default MSI limit, this is something done on a driver software level and it can lead to issues if you change it.
Instead, consider trying to change the core (default is Core 0 for all drivers) in which the DPC/ISR's are being executed.
This can lead to benefits.
Re: Questions about MSI limits in GoInterruptPolicy
Posted: 15 May 2025, 17:34
by KrendeLь
kyube wrote: ↑23 Apr 2025, 11:47
I would advise
against doing any modification to the driver default MSI limit, this is something done on a driver software level and it can lead to issues if you change it.
Instead, consider trying to change the core (default is Core 0 for all drivers) in which the DPC/ISR's are being executed.
This can lead to benefits.
Which drivers can be bound to the kernel and which ones should not be touched to avoid a BSOD?