[Oisf-users] cpu affinity...

[Russell Fulton]

Hi 

I just want to sanity check my config:

  set-cpu-affinity: yes
  # Tune cpu affinity of suricata threads. Each family of threads can be bound
  # on specific CPUs.
  cpu-affinity:
    - management-cpu-set:
        cpu: [ 10 ]  # include only these cpus in affinity settings
    - receive-cpu-set:
        cpu: [ 10 ]  # include only these cpus in affinity settings
    - decode-cpu-set:
        cpu: [ 10, 11 ]
        mode: "balanced"
    - stream-cpu-set:
        cpu: [ "10-11" ]
    - detect-cpu-set:
        cpu: [ "13-15" ]
        mode: "exclusive" # run detect threads in these cpus
        # Use explicitely 3 threads and don't compute number by using
        # detect-thread-ratio variable:
        # threads: 3
        prio:
          low: [ 10 ]
          medium: [ "11-12" ]
          high: [ 13 ]
          default: "medium"
    - verdict-cpu-set:
        cpu: [ 10 ]
        prio:
          default: "high"
    - reject-cpu-set:
        cpu: [ 10 ]
        prio:
          default: "low"
    - output-cpu-set:
        cpu: [ "all" ]
        prio:
           default: "medium"

top shows

Cpu10 :  8.5%us,  3.2%sy,  0.0%ni, 86.5%id,  0.0%wa,  0.0%hi,  1.8%si,  0.0%st
Cpu11 :  5.1%us,  5.1%sy,  0.0%ni, 87.6%id,  0.0%wa,  0.0%hi,  2.2%si,  0.0%st
Cpu12 :  3.9%us,  8.2%sy,  2.5%ni, 82.5%id,  0.0%wa,  0.0%hi,  2.9%si,  0.0%st
Cpu13 : 90.7%us,  0.0%sy,  0.0%ni,  0.0%id,  0.0%wa,  0.0%hi,  9.3%si,  0.0%st
Cpu14 :  9.4%us,  5.8%sy,  0.0%ni, 81.7%id,  0.0%wa,  0.4%hi,  2.9%si,  0.0%st
Cpu15 :  4.1%us,  5.2%sy,  0.7%ni, 87.4%id,  0.0%wa,  0.0%hi,  2.6%si,  0.0%st

is this as expected?  I had expected it to balance over 13-15 ?

I took this from the SO default and added 10 to the CPU numbers.