On 01/10/2020 19:56, Olivier Cochard-Labbé wrote: > On Thu, Oct 1, 2020 at 12:28 PM Hans Petter Selasky <h...@selasky.org> wrote: > >> On 2020-10-01 11:13, Michal Vančo via freebsd-net wrote: >>> On 01/10/2020 10:52, Hans Petter Selasky wrote: >>>> On 2020-10-01 10:24, Michal Vančo wrote: >>>>> But why is the actual number of IRQ lines bigger than number of CPU >>>>> cores? >>>> There are some dedicated IRQ's used for firmware management. >>>> >>>> Else the driver will use the number of online CPU's by default as the >>>> number of rings, if the hardware supports it. >>> Thanks for clarification. Is there any way to optimize this? In my case >>> I have 2 CPU sockets with 8 cores each (SMT is disabled). NIC is >>> connected via PCIe to the first CPU socket (numa domain 0). In this >>> case, wouldn't it be better if all interrupts were firing only on cores >>> of first socket? >>> >> Hi, >> >> You can use "cpuset" to bind those IRQ threads to the right core. >> >> >> You could try this RC script to bind them: > https://github.com/ocochard/BSDRP/blob/master/BSDRP/Files/usr/local/etc/rc.d/mlx5en_affinity > Thank you. This is perfect.
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