1#!/bin/sh 2# Copyright (c) 2015-2016 Oracle and/or its affiliates. All Rights Reserved. 3# 4# This program is free software; you can redistribute it and/or 5# modify it under the terms of the GNU General Public License as 6# published by the Free Software Foundation; either version 2 of 7# the License, or (at your option) any later version. 8# 9# This program is distributed in the hope that it would be useful, 10# but WITHOUT ANY WARRANTY; without even the implied warranty of 11# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12# GNU General Public License for more details. 13# 14# You should have received a copy of the GNU General Public License 15# along with this program. If not, see <http://www.gnu.org/licenses/>. 16# 17# Author: Alexey Kodanev <alexey.kodanev@oracle.com> 18# 19 20TST_TOTAL=1 21TCID="busy_poll02" 22 23. test_net.sh 24. busy_poll_lib.sh 25 26cleanup() 27{ 28 tst_rmdir 29 30 sysctl -q -w net.core.busy_poll=$busy_poll_old 31 tst_rhost_run -c "sysctl -q -w net.core.busy_poll=$rbusy_poll_old" 32} 33 34set_busy_poll() 35{ 36 local value=${1:-"0"} 37 ROD_SILENT sysctl -q -w net.core.busy_poll=$value 38 tst_rhost_run -s -c "sysctl -q -w net.core.busy_poll=$value" 39} 40 41tst_tmpdir 42 43busy_poll_old="$(cat /proc/sys/net/core/busy_poll)" 44rbusy_poll_old=$(tst_rhost_run -c 'cat /proc/sys/net/core/busy_poll') 45 46TST_CLEANUP="cleanup" 47trap "tst_brkm TBROK 'test interrupted'" INT 48 49for x in 50 0; do 50 tst_resm TINFO "set low latency busy poll to $x per socket" 51 set_busy_poll $x 52 tst_netload -H $(tst_ipaddr rhost) -d res_$x -b $x 53done 54 55poll_cmp=$(( 100 - ($(cat res_50) * 100) / $(cat res_0) )) 56 57if [ "$poll_cmp" -lt 1 ]; then 58 tst_resm TFAIL "busy poll result is '$poll_cmp' %" 59else 60 tst_resm TPASS "busy poll increased performance by '$poll_cmp' %" 61fi 62 63tst_exit 64