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_poll01" 22 23 . test_net.sh 24 . busy_poll_lib.sh 25 26 cleanup() 27 { 28 tst_rmdir 29 30 sysctl -q -w net.core.busy_read=$busy_read_old 31 sysctl -q -w net.core.busy_poll=$busy_poll_old 32 33 tst_rhost_run -c "sysctl -q -w net.core.busy_read=$rbusy_read_old" 34 tst_rhost_run -c "sysctl -q -w net.core.busy_poll=$rbusy_poll_old" 35 } 36 37 set_busy_poll() 38 { 39 local value=${1:-"0"} 40 ROD_SILENT sysctl -q -w net.core.busy_read=$value 41 ROD_SILENT sysctl -q -w net.core.busy_poll=$value 42 43 tst_rhost_run -s -c "sysctl -q -w net.core.busy_read=$value" 44 tst_rhost_run -s -c "sysctl -q -w net.core.busy_poll=$value" 45 } 46 47 tst_tmpdir 48 49 busy_read_old="$(cat /proc/sys/net/core/busy_read)" 50 busy_poll_old="$(cat /proc/sys/net/core/busy_poll)" 51 52 rbusy_read_old=$(tst_rhost_run -c 'cat /proc/sys/net/core/busy_read') 53 rbusy_poll_old=$(tst_rhost_run -c 'cat /proc/sys/net/core/busy_poll') 54 55 TST_CLEANUP="cleanup" 56 trap "tst_brkm TBROK 'test interrupted'" INT 57 58 for x in 50 0; do 59 tst_resm TINFO "set low latency busy poll to $x" 60 set_busy_poll $x 61 tst_netload -H $(tst_ipaddr rhost) -d res_$x 62 done 63 64 poll_cmp=$(( 100 - ($(cat res_50) * 100) / $(cat res_0) )) 65 66 if [ "$poll_cmp" -lt 1 ]; then 67 tst_resm TFAIL "busy poll result is '$poll_cmp' %" 68 else 69 tst_resm TPASS "busy poll increased performance by '$poll_cmp' %" 70 fi 71 72 tst_exit 73
