ceph/src/seastar/scripts/posix_net_conf.sh

   1 #!/bin/bash
   2 # !
   3 # !  Usage: posix_net_conf.sh [iface name, eth0 by default] [-mq|-sq] [--cpu-mask] [-h|--help] [--use-cpu-mask <mask>]
   4 # !
   5 # !  Ban NIC IRQs from being moved by irqbalance.
   6 # !
   7 # !  -sq - set all IRQs of a given NIC to CPU0 and configure RPS
   8 # !        to spreads NAPIs' handling between other CPUs.
   9 # !
  10 # !  -mq - distribute NIC's IRQs among all CPUs instead of binding
  11 # !        them all to CPU0. In this mode RPS is always enabled to
  12 # !        spreads NAPIs' handling between all CPUs.
  13 # !
  14 # !   --options-file <YAML file> - YAML file with perftune.py options
  15 # !
  16 # !  If there isn't any mode given script will use a default mode:
  17 # !     - If number of physical CPU cores per Rx HW queue is greater than 4 - use the '-sq' mode.
  18 # !     - Otherwise use the '-mq' mode.
  19 # !
  20 # !  --use-cpu-mask <mask> - mask of cores to use, by default use all available cores
  21 # !
  22 # !  --cpu-mask - Print out RPS CPU assignments. On MQ NIC, just print all cpus.
  23 # !
  24 # !  -h|--help - print this help information
  25 # !
  26 # !  Enable XPS, increase the default values of somaxconn and tcp_max_syn_backlog.
  27 # !
  28
  29 usage()
  30 {
  31     cat $0 | grep ^"# !" | cut -d"!" -f2-
  32 }
  33
  34 parse_args()
  35 {
  36     local i
  37     local arg
  38
  39     until [ -z "$1" ]
  40     do
  41         arg=$1
  42         case "$arg" in
  43             "-mq")
  44                 MQ_MODE="--mode mq"
  45                 ;;
  46             "-sq")
  47                 MQ_MODE="--mode sq"
  48                 ;;
  49             "--cpu-mask")
  50                 CPU_MASK="--get-cpu-mask"
  51                 ;;
  52             "--use-cpu-mask")
  53                 CPU_FILTER_MASK="--cpu-mask $2"
  54                 shift
  55                 ;;
  56             "--options-file")
  57                 OPTIONS_FILE="--options-file $2"
  58                 shift
  59                 ;;
  60             "-h"|"--help")
  61                 usage
  62                 exit 0
  63                 ;;
  64             *)
  65                 IFACE=$arg
  66                 ;;
  67             esac
  68             shift
  69     done
  70 }
  71
  72 IFACE="eth0"
  73 MQ_MODE=""
  74 CPU_FILTER_MASK=""
  75 CPU_MASK=""
  76 MY_DIR=`dirname $0`
  77 OPTIONS_FILE=""
  78
  79 parse_args $@
  80
  81 $MY_DIR/perftune.py --nic $IFACE $MQ_MODE $CPU_FILTER_MASK $CPU_MASK $OPTIONS_FILE --tune net