tests/tools/streaming/high_throughput_limits

   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 $TESTDIR/utils.sh
  35
  36 print_test_banner "$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         echo -n "Setting bandwidth limits to ${limit}kbits... "
  53         tc qdisc add dev $DEFAULT_IF root handle 1: htb default 15 >/dev/null 2>&1
  54         tc class add dev $DEFAULT_IF parent 1: classid 1:1 htb rate ${limit}kbit ceil ${limit}kbit >/dev/null 2>&1
  55
  56         tc filter add dev $DEFAULT_IF parent 1: protocol ip u32 match ip dport $SESSIOND_CTRL_PORT 0xffff flowid 1:1 >/dev/null 2>&1
  57
  58         tc filter add dev $DEFAULT_IF parent 1: protocol ip u32 match ip dport $SESSIOND_DATA_PORT 0xffff flowid 1:1 >/dev/null 2>&1
  59         print_ok
  60 }
  61
  62 function reset_bw_limit
  63 {
  64         echo -n "Resetting bandwidth limits... "
  65         tc qdisc del dev $DEFAULT_IF root >/dev/null 2>&1
  66         print_ok
  67 }
  68
  69 function create_lttng_session_with_uri
  70 {
  71         sess_name=$1
  72         uri=$2
  73         # Create session with custom URI
  74         $TESTDIR/../src/bin/lttng/$LTTNG_BIN create -U $uri $sess_name >/dev/null 2>&1
  75 }
  76
  77 function enable_lttng_consumer
  78 {
  79         uri=$1
  80         # Create session with custom URI
  81         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-consumer -u $uri >/dev/null 2>&1
  82 }
  83
  84 function run_apps
  85 {
  86         for i in `seq 1 $NR_APP_ITER`; do
  87                 # With bandwidth limitation, unfortunately, application easily timeout
  88                 # due to very slow communication between the consumer and relayd making
  89                 # the status reply from the consumer quite slow thus delaying the
  90                 # registration done message.
  91                 LTTNG_UST_REGISTER_TIMEOUT=-1 ./$CURDIR/$BIN_NAME $NR_ITER & >/dev/null 2>&1
  92         done
  93 }
  94
  95 function wait_apps
  96 {
  97         echo "Waiting for applications to end"
  98         while [ -n "$(pidof $BIN_NAME)" ]; do
  99                 echo -n "."
 100                 sleep 1
 101         done
 102         echo ""
 103 }
 104
 105 function test_high_throughput
 106 {
 107         NETWORK_URI="net://localhost"
 108         create_lttng_session_with_uri $SESSION_NAME $NETWORK_URI
 109         enable_lttng_consumer $NETWORK_URI
 110         enable_ust_lttng_event $SESSION_NAME $EVENT_NAME
 111         start_lttng_tracing $SESSION_NAME
 112         run_apps
 113         wait_apps
 114
 115         stop_lttng_tracing $SESSION_NAME
 116         destroy_lttng_session $SESSION_NAME
 117         validate_event_count
 118 }
 119
 120 function validate_event_count
 121 {
 122
 123         TEMP_FILE=$(mktemp)
 124         TEMP_FILE_2=$(mktemp)
 125
 126         traced=$(babeltrace $TRACE_PATH 2>/dev/null | wc -l)
 127         babeltrace $TRACE_PATH >/dev/null 2>$TEMP_FILE_2
 128
 129         cat $TEMP_FILE_2 | cut -f4 -d " " >$TEMP_FILE
 130
 131         dropped=0
 132         while read line;
 133         do
 134                 let dropped=$dropped+$line
 135         done < $TEMP_FILE
 136
 137         let total=$dropped+$traced
 138         let wanted=$NR_APP_ITER*$NR_ITER
 139
 140         if [ $wanted -ne $total ]; then
 141                 echo -n "Expected $wanted. Dropped $dropped. Recorded $traced. Total $total... "
 142                 print_fail
 143                 return 1
 144         else
 145                 echo -n "Expected $wanted. Dropped $dropped. Recorded $traced. Total $total... "
 146                 print_ok
 147
 148                 # Cleanup only if everything is ok and passes.
 149                 rm -rf $TRACE_PATH
 150                 rm $TEMP_FILE $TEMP_FILE_2
 151
 152                 return 0
 153         fi
 154 }
 155
 156 function interrupt_cleanup()
 157 {
 158         echo -en "\n*** Exiting ***\n"
 159         stop_lttng_relayd
 160         stop_lttng_sessiond
 161         reset_bw_limit
 162         exit 1
 163 }
 164
 165 # Catch sigint and try to cleanup limits
 166 trap interrupt_cleanup SIGINT
 167
 168 BW_LIMITS=(3200 1600 800 400 200 100 50 25)
 169 for BW in ${BW_LIMITS[@]};
 170 do
 171         echo ""
 172         echo -e "=== Testing high-throughput with bandwidth limit set to ${BW}kbits"
 173         set_bw_limit $BW
 174
 175         start_lttng_sessiond
 176         start_lttng_relayd "-o $TRACE_PATH"
 177         test_high_throughput
 178         result=$?
 179         stop_lttng_relayd
 180         stop_lttng_sessiond
 181         reset_bw_limit
 182
 183         if [ $result -ne 0 ]; then
 184                 exit 1
 185         fi
 186 done