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 (at] oracle.com> 18 # 19 20 TST_TOTAL=1 21 TCID="busy_poll02" 22 TST_NEEDS_TMPDIR=1 23 24 . test_net.sh 25 . busy_poll_lib.sh 26 27 cleanup() 28 { 29 tst_rmdir 30 31 sysctl -q -w net.core.busy_poll=$busy_poll_old 32 tst_rhost_run -c "sysctl -q -w net.core.busy_poll=$rbusy_poll_old" 33 } 34 35 set_busy_poll() 36 { 37 local value=${1:-"0"} 38 ROD_SILENT sysctl -q -w net.core.busy_poll=$value 39 tst_rhost_run -s -c "sysctl -q -w net.core.busy_poll=$value" 40 } 41 42 busy_poll_old="$(cat /proc/sys/net/core/busy_poll)" 43 rbusy_poll_old=$(tst_rhost_run -c 'cat /proc/sys/net/core/busy_poll') 44 45 TST_CLEANUP="cleanup" 46 trap "tst_brkm TBROK 'test interrupted'" INT 47 48 for x in 50 0; do 49 tst_resm TINFO "set low latency busy poll to $x per socket" 50 set_busy_poll $x 51 tst_netload -H $(tst_ipaddr rhost) -d res_$x -b $x 52 done 53 54 poll_cmp=$(( 100 - ($(cat res_50) * 100) / $(cat res_0) )) 55 56 if [ "$poll_cmp" -lt 1 ]; then 57 tst_resm TFAIL "busy poll result is '$poll_cmp' %" 58 else 59 tst_resm TPASS "busy poll increased performance by '$poll_cmp' %" 60 fi 61 62 tst_exit 63
