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- #!/bin/sh
- # SPDX-License-Identifier: GPL-2.0-or-later
- # Copyright (c) 2015-2018 Oracle and/or its affiliates. All Rights Reserved.
- #
- # Author: Alexey Kodanev <alexey.kodanev@oracle.com>
- . busy_poll_lib.sh
- cleanup()
- {
- [ -n "$busy_read_old" ] && \
- sysctl -q -w net.core.busy_read=$busy_read_old
- [ -n "$busy_poll_old" ] && \
- sysctl -q -w net.core.busy_poll=$busy_poll_old
- [ -n "$rbusy_read_old" ] && \
- tst_rhost_run -c "sysctl -q -w net.core.busy_read=$rbusy_read_old"
- [ -n "$rbusy_poll_old" ] && \
- tst_rhost_run -c "sysctl -q -w net.core.busy_poll=$rbusy_poll_old"
- }
- set_busy_poll()
- {
- local value=${1:-"0"}
- ROD_SILENT sysctl -q -w net.core.busy_read=$value
- ROD_SILENT sysctl -q -w net.core.busy_poll=$value
- tst_rhost_run -s -c "sysctl -q -w net.core.busy_read=$value"
- tst_rhost_run -s -c "sysctl -q -w net.core.busy_poll=$value"
- }
- setup()
- {
- busy_poll_check_config
- busy_read_old="$(cat /proc/sys/net/core/busy_read)"
- busy_poll_old="$(cat /proc/sys/net/core/busy_poll)"
- rbusy_read_old=$(tst_rhost_run -c 'cat /proc/sys/net/core/busy_read')
- rbusy_poll_old=$(tst_rhost_run -c 'cat /proc/sys/net/core/busy_poll')
- }
- test()
- {
- for x in 50 0; do
- tst_res TINFO "set low latency busy poll to $x"
- set_busy_poll $x
- tst_netload -H $(tst_ipaddr rhost) -n 10 -N 10 -d res_$x
- done
- local poll_cmp=$(( 100 - ($(cat res_50) * 100) / $(cat res_0) ))
- if [ "$poll_cmp" -lt 1 ]; then
- tst_res TFAIL "busy poll result is '$poll_cmp' %"
- else
- tst_res TPASS "busy poll increased performance by '$poll_cmp' %"
- fi
- }
- tst_run
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