I think you are confusing Linux’s epoll with the hardware network interface. Som... | Hacker News

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		robocat on May 25, 2020 \| parent \| context \| favorite \| on: Linux 5.8 Set to Optionally Flush the L1d Cache on... I think you are confusing Linux’s epoll with the hardware network interface. Some hardware offloads a lot of processing to dedicated network card processors, other network hardware might just use hardware interrupts for the driver module. Either way, I am sure there are plenty of devices that can cause a lot of interrupts (USB?), not just network IO. Presumably there is a way to monitor the count of interrupts per second in Linux?

caf on May 25, 2020 | [–]

You can sample /proc/interrupts to see.

namibj on May 25, 2020 | [–]

No, I didn't confuse those. I am aware that hardware offloading is still quite luxurious, but even then it's bad to spam interrupts.

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