| 1 | #!/bin/bash |
| 2 | # |
| 3 | # Copyright (C) - 2012 Christian Babeux <christian.babeux@efficios.com> |
| 4 | # David Goulet <dgoulet@efficios.com> |
| 5 | # |
| 6 | # This library is free software; you can redistribute it and/or modify it under |
| 7 | # the terms of the GNU Lesser General Public License as published by the Free |
| 8 | # Software Foundation; version 2.1 of the License. |
| 9 | # |
| 10 | # This library is distributed in the hope that it will be useful, but WITHOUT |
| 11 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| 12 | # FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
| 13 | # details. |
| 14 | # |
| 15 | # You should have received a copy of the GNU Lesser General Public License |
| 16 | # along with this library; if not, write to the Free Software Foundation, Inc., |
| 17 | # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | TEST_DESC="Streaming - High throughput with bandwidth limits" |
| 20 | |
| 21 | CURDIR=$(dirname $0)/ |
| 22 | TESTDIR=$CURDIR/../../.. |
| 23 | NR_APP_ITER=10 |
| 24 | NR_ITER=1000000 |
| 25 | BIN_NAME="gen-ust-events" |
| 26 | SESSION_NAME="high-throughput" |
| 27 | EVENT_NAME="tp:tptest" |
| 28 | SESSIOND_CTRL_PORT=5342 |
| 29 | SESSIOND_DATA_PORT=5343 |
| 30 | DEFAULT_IF="lo" |
| 31 | |
| 32 | TRACE_PATH=$(mktemp -d) |
| 33 | |
| 34 | source $TESTDIR/utils/utils.sh |
| 35 | |
| 36 | print_test_banner "$TEST_DESC" |
| 37 | |
| 38 | if [ ! -x "$CURDIR/$BIN_NAME" ]; then |
| 39 | echo -e "No UST nevents binary detected. Passing." |
| 40 | exit 0 |
| 41 | fi |
| 42 | |
| 43 | if [ "$(id -u)" != "0" ]; then |
| 44 | echo "This test must be running as root to set bandwidth limits. Aborting" |
| 45 | # Exit status 0 so the tests can continue |
| 46 | exit 0 |
| 47 | fi |
| 48 | |
| 49 | function set_bw_limit |
| 50 | { |
| 51 | limit=$1 |
| 52 | ctrlportlimit=$(($limit/10)) |
| 53 | # failsafe to have at least 1kbit/s for control (in the case where $1 < 10) |
| 54 | [ $ctrlportlimit = 0 ] && ctrlportlimit=1 |
| 55 | # if $1 < 10, we might bust the limit set here, but the |
| 56 | # parent qdisc (1:) will always limit us to the right max value |
| 57 | dataportlimit=$((9*${ctrlportlimit})) |
| 58 | |
| 59 | echo -n "Setting bandwidth limits to ${limit}kbits, (${ctrlportlimit} for control and ${dataportlimit} for data)... " |
| 60 | tc qdisc add dev $DEFAULT_IF root handle 1: htb default 15 >/dev/null 2>&1 |
| 61 | |
| 62 | # the total bandwidth is the limit set by the user |
| 63 | tc class add dev $DEFAULT_IF parent 1: classid 1:1 htb rate ${limit}kbit ceil ${limit}kbit >/dev/null 2>&1 |
| 64 | # 1/10 of the bandwidth guaranteed and traffic prioritized for the control port |
| 65 | tc class add dev $DEFAULT_IF parent 1:1 classid 1:10 htb rate ${ctrlportlimit}kbit ceil ${limit}kbit prio 1 >/dev/null 2>&1 |
| 66 | # 9/10 of the bandwidth guaranteed and can borrow up to the total bandwidth (if unused) |
| 67 | tc class add dev $DEFAULT_IF parent 1:1 classid 1:11 htb rate ${dataportlimit}kbit ceil ${limit}kbit prio 2 >/dev/null 2>&1 |
| 68 | |
| 69 | # filter to assign control traffic to the 1:10 class |
| 70 | tc filter add dev $DEFAULT_IF parent 1: protocol ip u32 match ip dport $SESSIOND_CTRL_PORT 0xffff flowid 1:10 >/dev/null 2>&1 |
| 71 | # filter to assign data traffic to the 1:11 class |
| 72 | tc filter add dev $DEFAULT_IF parent 1: protocol ip u32 match ip dport $SESSIOND_DATA_PORT 0xffff flowid 1:11 >/dev/null 2>&1 |
| 73 | print_ok |
| 74 | } |
| 75 | |
| 76 | function reset_bw_limit |
| 77 | { |
| 78 | echo -n "Resetting bandwidth limits... " |
| 79 | tc qdisc del dev $DEFAULT_IF root >/dev/null 2>&1 |
| 80 | print_ok |
| 81 | } |
| 82 | |
| 83 | function create_lttng_session_with_uri |
| 84 | { |
| 85 | sess_name=$1 |
| 86 | uri=$2 |
| 87 | # Create session with custom URI |
| 88 | $TESTDIR/../src/bin/lttng/$LTTNG_BIN create -U $uri $sess_name >/dev/null 2>&1 |
| 89 | } |
| 90 | |
| 91 | function enable_lttng_consumer |
| 92 | { |
| 93 | uri=$1 |
| 94 | # Create session with custom URI |
| 95 | $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-consumer -u $uri >/dev/null 2>&1 |
| 96 | } |
| 97 | |
| 98 | function run_apps |
| 99 | { |
| 100 | for i in `seq 1 $NR_APP_ITER`; do |
| 101 | # With bandwidth limitation, unfortunately, application easily timeout |
| 102 | # due to very slow communication between the consumer and relayd making |
| 103 | # the status reply from the consumer quite slow thus delaying the |
| 104 | # registration done message. |
| 105 | LTTNG_UST_REGISTER_TIMEOUT=-1 ./$CURDIR/$BIN_NAME $NR_ITER & >/dev/null 2>&1 |
| 106 | done |
| 107 | } |
| 108 | |
| 109 | function wait_apps |
| 110 | { |
| 111 | echo "Waiting for applications to end" |
| 112 | while [ -n "$(pidof $BIN_NAME)" ]; do |
| 113 | echo -n "." |
| 114 | sleep 1 |
| 115 | done |
| 116 | echo "" |
| 117 | } |
| 118 | |
| 119 | function test_high_throughput |
| 120 | { |
| 121 | NETWORK_URI="net://localhost" |
| 122 | create_lttng_session_with_uri $SESSION_NAME $NETWORK_URI |
| 123 | enable_lttng_consumer $NETWORK_URI |
| 124 | enable_ust_lttng_event $SESSION_NAME $EVENT_NAME |
| 125 | start_lttng_tracing $SESSION_NAME |
| 126 | run_apps |
| 127 | wait_apps |
| 128 | |
| 129 | stop_lttng_tracing $SESSION_NAME |
| 130 | destroy_lttng_session $SESSION_NAME |
| 131 | validate_event_count |
| 132 | } |
| 133 | |
| 134 | function validate_event_count |
| 135 | { |
| 136 | |
| 137 | TEMP_FILE=$(mktemp) |
| 138 | TEMP_FILE_2=$(mktemp) |
| 139 | |
| 140 | traced=$(babeltrace $TRACE_PATH 2>/dev/null | wc -l) |
| 141 | babeltrace $TRACE_PATH >/dev/null 2>$TEMP_FILE_2 |
| 142 | |
| 143 | cat $TEMP_FILE_2 | cut -f4 -d " " >$TEMP_FILE |
| 144 | |
| 145 | dropped=0 |
| 146 | while read line; |
| 147 | do |
| 148 | let dropped=$dropped+$line |
| 149 | done < $TEMP_FILE |
| 150 | |
| 151 | let total=$dropped+$traced |
| 152 | let wanted=$NR_APP_ITER*$NR_ITER |
| 153 | |
| 154 | if [ $wanted -ne $total ]; then |
| 155 | echo -n "Expected $wanted. Dropped $dropped. Recorded $traced. Total $total... " |
| 156 | print_fail |
| 157 | return 1 |
| 158 | else |
| 159 | echo -n "Expected $wanted. Dropped $dropped. Recorded $traced. Total $total... " |
| 160 | print_ok |
| 161 | |
| 162 | # Cleanup only if everything is ok and passes. |
| 163 | rm -rf $TRACE_PATH |
| 164 | rm $TEMP_FILE $TEMP_FILE_2 |
| 165 | |
| 166 | return 0 |
| 167 | fi |
| 168 | } |
| 169 | |
| 170 | function interrupt_cleanup() |
| 171 | { |
| 172 | echo -en "\n*** Exiting ***\n" |
| 173 | stop_lttng_relayd |
| 174 | stop_lttng_sessiond |
| 175 | reset_bw_limit |
| 176 | exit 1 |
| 177 | } |
| 178 | |
| 179 | # Catch sigint and try to cleanup limits |
| 180 | trap interrupt_cleanup SIGINT |
| 181 | |
| 182 | BW_LIMITS=(3200 1600 800 400 200 100 50 25) |
| 183 | for BW in ${BW_LIMITS[@]}; |
| 184 | do |
| 185 | echo "" |
| 186 | echo -e "=== Testing high-throughput with bandwidth limit set to ${BW}kbits" |
| 187 | set_bw_limit $BW |
| 188 | |
| 189 | start_lttng_sessiond |
| 190 | start_lttng_relayd "-o $TRACE_PATH" |
| 191 | test_high_throughput |
| 192 | result=$? |
| 193 | stop_lttng_relayd |
| 194 | stop_lttng_sessiond |
| 195 | reset_bw_limit |
| 196 | |
| 197 | if [ $result -ne 0 ]; then |
| 198 | exit 1 |
| 199 | fi |
| 200 | done |