| #!/bin/sh |
| # Copyright (c) 2016 Oracle and/or its affiliates. All Rights Reserved. |
| # |
| # This program is free software; you can redistribute it and/or |
| # modify it under the terms of the GNU General Public License as |
| # published by the Free Software Foundation; either version 2 of |
| # the License, or (at your option) any later version. |
| # |
| # This program is distributed in the hope that it would be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| # |
| # Author: Alexey Kodanev <alexey.kodanev@oracle.com> |
| # |
| |
| TST_TOTAL=1 |
| TCID="busy_poll03" |
| TST_NEEDS_TMPDIR=1 |
| |
| . test_net.sh |
| . busy_poll_lib.sh |
| |
| cleanup() |
| { |
| tst_rmdir |
| |
| sysctl -q -w net.core.busy_poll=$busy_poll_old |
| tst_rhost_run -c "sysctl -q -w net.core.busy_poll=$rbusy_poll_old" |
| } |
| |
| set_busy_poll() |
| { |
| local value=${1:-"0"} |
| ROD_SILENT sysctl -q -w net.core.busy_poll=$value |
| tst_rhost_run -s -c "sysctl -q -w net.core.busy_poll=$value" |
| } |
| |
| busy_poll_old="$(cat /proc/sys/net/core/busy_poll)" |
| rbusy_poll_old=$(tst_rhost_run -c 'cat /proc/sys/net/core/busy_poll') |
| |
| TST_CLEANUP="cleanup" |
| trap "tst_brkm TBROK 'test interrupted'" INT |
| |
| for x in 50 0; do |
| tst_resm TINFO "set low latency busy poll to $x per socket" |
| set_busy_poll $x |
| tst_netload -H $(tst_ipaddr rhost) -d res_$x -b $x -T udp |
| done |
| |
| poll_cmp=$(( 100 - ($(cat res_50) * 100) / $(cat res_0) )) |
| |
| if [ "$poll_cmp" -lt 1 ]; then |
| tst_resm TFAIL "busy poll result is '$poll_cmp' %" |
| else |
| tst_resm TPASS "busy poll increased performance by '$poll_cmp' %" |
| fi |
| |
| tst_exit |