I'm not sure if this is the right place where I should ask this question. I applogize if it's not. It may not be an Intel-specific question.
I try to enable interrupt coalescing in the LSI controller. Right now I don't see interrupt coalescing (I saw 1 million interrupts when issuing 1 million IO requests). When I talked to the tech support of LSI, I was told that interrupt coalescing is enabled by the driver by default, but in order to enable this feature, processors also have to support it. I use Xeon E5-4620, so I believe the processor should support it if it requires CPU's support. I don't know if the Linux kernel has any parameters that can enable or disable interrupt coalescing in the processor. I don't see any in the system's BIOS for sure. Does anyone have any knowledge about interrupt coalescing? I'm quite confused how it works.