On Fri, 15 Jun 2018 12:41:10 -0400 (EDT) Mikulas Patocka <mpatocka@xxxxxxxxxx> wrote: > BTW. when I subject the machine to a ping flood (ping -f), the > non-realtime kernel (with the patch to avoid offloading ehci urb > callbacks) performs better than the real-time kernel. > > With the real-time kernel, all the networking work is done in the thread > "irq/12-eth0", that has (by default) priority -51, it consumes 30% CPU > time and causes sound skipping. I can avoid the skipping by lowering the > priority of "irq/12-eth0". That's actually the correct thing to do. When dealing with RT applications, one needs to modify the priority of the interrupts that are required (or lower the ones that are not). > > With non-realtime kernel, no such problem during ping flood exists. But that was with a patched kernel? -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
