1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0-or-later 3# Copyright (c) 2015-2020 Oracle and/or its affiliates. All Rights Reserved. 4# 5# Author: Alexey Kodanev <alexey.kodanev@oracle.com> 6 7. busy_poll_lib.sh 8 9cleanup() 10{ 11 [ -n "$busy_read_old" ] && \ 12 sysctl -q -w net.core.busy_read=$busy_read_old 13 [ -n "$busy_poll_old" ] && \ 14 sysctl -q -w net.core.busy_poll=$busy_poll_old 15 [ -n "$rbusy_read_old" ] && \ 16 tst_rhost_run -c "sysctl -q -w net.core.busy_read=$rbusy_read_old" 17 [ -n "$rbusy_poll_old" ] && \ 18 tst_rhost_run -c "sysctl -q -w net.core.busy_poll=$rbusy_poll_old" 19} 20 21set_busy_poll() 22{ 23 local value=${1:-"0"} 24 tst_set_sysctl net.core.busy_read $value safe 25 tst_set_sysctl net.core.busy_poll $value safe 26} 27 28setup() 29{ 30 busy_poll_check_config 31 32 busy_read_old="$(sysctl -n net.core.busy_read)" 33 busy_poll_old="$(sysctl -n net.core.busy_poll)" 34 35 rbusy_read_old=$(tst_rhost_run -c 'sysctl -ne net.core.busy_read') 36 rbusy_poll_old=$(tst_rhost_run -c 'sysctl -ne net.core.busy_poll') 37} 38 39test() 40{ 41 for x in 50 0; do 42 tst_res TINFO "set low latency busy poll to $x" 43 set_busy_poll $x 44 tst_netload -H $(tst_ipaddr rhost) -n 10 -N 10 -d res_$x 45 done 46 47 tst_netload_compare $(cat res_0) $(cat res_50) 1 48} 49 50tst_run 51