samples/pktgen/pktgen_sample05_flow_per_thread.sh

   1 #!/bin/bash
   2 #
   3 # Script will generate one flow per thread (-t N)
   4 #  - Same destination IP
   5 #  - Fake source IPs for each flow (fixed based on thread number)
   6 #
   7 # Useful for scale testing on receiver, to see whether silo'ing flows
   8 # works and scales.  For optimal scalability (on receiver) each
   9 # separate-flow should not access shared variables/data. This script
  10 # helps magnify any of these scaling issues by overloading the receiver.
  11 #
  12 basedir=`dirname $0`
  13 source ${basedir}/functions.sh
  14 root_check_run_with_sudo "$@"
  15
  16 # Parameter parsing via include
  17 source ${basedir}/parameters.sh
  18 # Set some default params, if they didn't get set
  19 [ -z "$DEST_IP" ]   && DEST_IP="198.18.0.42"
  20 [ -z "$DST_MAC" ]   && DST_MAC="90:e2:ba:ff:ff:ff"
  21 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
  22 [ -z "$BURST" ]     && BURST=32
  23
  24
  25 # Base Config
  26 DELAY="0"  # Zero means max speed
  27 COUNT="0"  # Zero means indefinitely
  28
  29 # General cleanup everything since last run
  30 pg_ctrl "reset"
  31
  32 # Threads are specified with parameter -t value in $THREADS
  33 for ((thread = 0; thread < $THREADS; thread++)); do
  34     dev=${DEV}@${thread}
  35
  36     # Add remove all other devices and add_device $dev to thread
  37     pg_thread $thread "rem_device_all"
  38     pg_thread $thread "add_device" $dev
  39
  40     # Base config
  41     pg_set $dev "flag QUEUE_MAP_CPU"
  42     pg_set $dev "count $COUNT"
  43     pg_set $dev "clone_skb $CLONE_SKB"
  44     pg_set $dev "pkt_size $PKT_SIZE"
  45     pg_set $dev "delay $DELAY"
  46     pg_set $dev "flag NO_TIMESTAMP"
  47
  48     # Single destination
  49     pg_set $dev "dst_mac $DST_MAC"
  50     pg_set $dev "dst $DEST_IP"
  51
  52     # Setup source IP-addresses based on thread number
  53     pg_set $dev "src_min 198.18.$((thread+1)).1"
  54     pg_set $dev "src_max 198.18.$((thread+1)).1"
  55
  56     # Setup burst, for easy testing -b 0 disable bursting
  57     # (internally in pktgen default and minimum burst=1)
  58     if [[ ${BURST} -ne 0 ]]; then
  59         pg_set $dev "burst $BURST"
  60     else
  61         info "$dev: Not using burst"
  62     fi
  63
  64 done
  65
  66 # Run if user hits control-c
  67 function print_result() {
  68     # Print results
  69     for ((thread = 0; thread < $THREADS; thread++)); do
  70         dev=${DEV}@${thread}
  71         echo "Device: $dev"
  72         cat /proc/net/pktgen/$dev | grep -A2 "Result:"
  73     done
  74 }
  75 # trap keyboard interrupt (Ctrl-C)
  76 trap true SIGINT
  77
  78 echo "Running... ctrl^C to stop" >&2
  79 pg_ctrl "start"
  80
  81 print_result