1 #!/bin/sh 2 # SPDX-License-Identifier: GPL-2.0-or-later 3 # Copyright (c) 2015-2018 Oracle and/or its affiliates. All Rights Reserved. 4 # 5 # Author: Alexey Kodanev <alexey.kodanev (at] oracle.com> 6 7 . busy_poll_lib.sh 8 9 cleanup() 10 { 11 [ -n "$busy_poll_old" ] && \ 12 sysctl -q -w net.core.busy_poll=$busy_poll_old 13 [ -n "$rbusy_poll_old" ] && \ 14 tst_rhost_run -c "sysctl -q -w net.core.busy_poll=$rbusy_poll_old" 15 } 16 17 set_busy_poll() 18 { 19 local value=${1:-"0"} 20 ROD_SILENT sysctl -q -w net.core.busy_poll=$value 21 tst_rhost_run -s -c "sysctl -q -w net.core.busy_poll=$value" 22 } 23 24 setup() 25 { 26 busy_poll_check_config 27 28 busy_poll_old="$(cat /proc/sys/net/core/busy_poll)" 29 rbusy_poll_old=$(tst_rhost_run -c 'cat /proc/sys/net/core/busy_poll') 30 } 31 32 test() 33 { 34 for x in 50 0; do 35 tst_res TINFO "set low latency busy poll to $x per socket" 36 set_busy_poll $x 37 tst_netload -H $(tst_ipaddr rhost) -n 10 -N 10 -d res_$x -b $x 38 done 39 40 local poll_cmp=$(( 100 - ($(cat res_50) * 100) / $(cat res_0) )) 41 42 if [ "$poll_cmp" -lt 1 ]; then 43 tst_res TFAIL "busy poll result is '$poll_cmp' %" 44 else 45 tst_res TPASS "busy poll increased performance by '$poll_cmp' %" 46 fi 47 } 48 49 tst_run 50
