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 7cleanup() 8{ 9 [ -n "$busy_read_old" ] && \ 10 sysctl -q -w net.core.busy_read=$busy_read_old 11 [ -n "$busy_poll_old" ] && \ 12 sysctl -q -w net.core.busy_poll=$busy_poll_old 13 [ -n "$rbusy_read_old" ] && \ 14 tst_rhost_run -c "sysctl -q -w net.core.busy_read=$rbusy_read_old" 15 [ -n "$rbusy_poll_old" ] && \ 16 tst_rhost_run -c "sysctl -q -w net.core.busy_poll=$rbusy_poll_old" 17} 18 19set_busy_poll() 20{ 21 local value=${1:-"0"} 22 tst_set_sysctl net.core.busy_read $value safe 23 tst_set_sysctl net.core.busy_poll $value safe 24} 25 26setup() 27{ 28 busy_poll_check_config 29 30 busy_read_old="$(sysctl -n net.core.busy_read)" 31 busy_poll_old="$(sysctl -n net.core.busy_poll)" 32 33 rbusy_read_old=$(tst_rhost_run -c 'sysctl -ne net.core.busy_read') 34 rbusy_poll_old=$(tst_rhost_run -c 'sysctl -ne net.core.busy_poll') 35} 36 37test() 38{ 39 for x in 50 0; do 40 tst_res TINFO "set low latency busy poll to $x" 41 set_busy_poll $x 42 tst_netload -H $(tst_ipaddr rhost) -n 10 -N 10 -d res_$x 43 done 44 45 tst_netload_compare $(cat res_0) $(cat res_50) 1 46} 47 48. busy_poll_lib.sh 49tst_run 50