Re: [PATCH 2/2] nvme-pci: allow unmanaged interrupts

From: Bart Van Assche
Date: Mon May 13 2024 - 09:13:01 EST


On 5/10/24 08:10, Christoph Hellwig wrote:
On Fri, May 10, 2024 at 07:14:59AM -0700, Keith Busch wrote:
From: Keith Busch <kbusch@xxxxxxxxxx>

Some people _really_ want to control their interrupt affinity.

So let them argue why. I'd rather have a really, really, really
good argument for this crap, and I'd like to hear it from the horses
mouth.

Performance can be increased by modifying the interrupt assignments
carefully, especially in storage appliances that have to process a
large number of network and storage interrupts. By carefully assigning
interrupts the number of completions processed per interrupt can be
increased and hence performance also increases. In 2014 I was working
on a product that benefited from this approach.

Thanks,

Bart.