tests/regression/tools/streaming/test_high_throughput_limits

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2012 Christian Babeux <christian.babeux@efficios.com>
   4 # Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
   5 #
   6 # SPDX-License-Identifier: LGPL-2.1-only
   7
   8 TEST_DESC="Streaming - High throughput with bandwidth limits"
   9
  10 CURDIR=$(dirname $0)/
  11 TESTDIR=$CURDIR/../../..
  12 NR_APP_ITER=10
  13 NR_ITER=1000000
  14 TESTAPP_PATH="$TESTDIR/utils/testapp"
  15 TESTAPP_NAME="gen-ust-events"
  16 TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
  17 SESSION_NAME="high-throughput"
  18 EVENT_NAME="tp:tptest"
  19 SESSIOND_CTRL_PORT=5342
  20 SESSIOND_DATA_PORT=5343
  21 DEFAULT_IF="lo"
  22
  23 TRACE_PATH=$(mktemp -d)
  24
  25 NUM_TESTS=104
  26
  27 source $TESTDIR/utils/utils.sh
  28
  29 if [ ! -x "$TESTAPP_BIN" ]; then
  30         BAIL_OUT "No UST events binary detected."
  31 fi
  32
  33 function reset_bw_limit
  34 {
  35         tc qdisc del dev $DEFAULT_IF root >/dev/null 2>&1
  36         return $?
  37 }
  38
  39 function set_bw_limit
  40 {
  41         limit=$1
  42         ctrlportlimit=$(($limit/10))
  43         # failsafe to have at least 1kbit/s for control (in the case where $1 < 10)
  44         [ $ctrlportlimit = 0 ] && ctrlportlimit=1
  45         # if $1 < 10, we might bust the limit set here, but the
  46         # parent qdisc (1:) will always limit us to the right max value
  47         dataportlimit=$((9*${ctrlportlimit}))
  48
  49         diag "Set bandwidth limits to ${limit}kbits, ${ctrlportlimit} for control and ${dataportlimit} for data"
  50
  51         tc qdisc add dev $DEFAULT_IF root handle 1: htb default 15 >/dev/null 2>&1
  52         if [ $? -ne 0 ]; then
  53                 reset_bw_limit
  54                 return 1
  55         fi
  56
  57         # the total bandwidth is the limit set by the user
  58         tc class add dev $DEFAULT_IF parent 1: classid 1:1 htb rate ${limit}kbit ceil ${limit}kbit >/dev/null 2>&1
  59         if [ $? -ne 0 ]; then
  60                 reset_bw_limit
  61                 return 1
  62         fi
  63         # 1/10 of the bandwidth guaranteed and traffic prioritized for the control port
  64         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
  65         if [ $? -ne 0 ]; then
  66                 reset_bw_limit
  67                 return 1
  68         fi
  69         # 9/10 of the bandwidth guaranteed and can borrow up to the total bandwidth (if unused)
  70         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
  71         if [ $? -ne 0 ]; then
  72                 reset_bw_limit
  73                 return 1
  74         fi
  75
  76         # filter to assign control traffic to the 1:10 class
  77         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
  78         if [ $? -ne 0 ]; then
  79                 reset_bw_limit
  80                 return 1
  81         fi
  82         # filter to assign data traffic to the 1:11 class
  83         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
  84         if [ $? -ne 0 ]; then
  85                 reset_bw_limit
  86                 return 1
  87         fi
  88
  89         return 0
  90 }
  91
  92 function create_lttng_session_with_uri
  93 {
  94         sess_name=$1
  95         uri=$2
  96         # Create session with custom URI
  97         $TESTDIR/../src/bin/lttng/$LTTNG_BIN create -U $uri $sess_name >/dev/null 2>&1
  98         ok $? "Create session with uri $uri"
  99 }
 100
 101 function run_apps
 102 {
 103         for i in `seq 1 $NR_APP_ITER`; do
 104                 # With bandwidth limitation, unfortunately, application easily timeout
 105                 # due to very slow communication between the consumer and relayd making
 106                 # the status reply from the consumer quite slow thus delaying the
 107                 # registration done message.
 108                 LTTNG_UST_REGISTER_TIMEOUT=-1 $TESTAPP_BIN -i $NR_ITER & >/dev/null 2>&1
 109         done
 110 }
 111
 112 function test_high_throughput
 113 {
 114         NETWORK_URI="net://localhost"
 115         create_lttng_session_with_uri $SESSION_NAME $NETWORK_URI
 116         enable_ust_lttng_event_ok $SESSION_NAME $EVENT_NAME
 117         start_lttng_tracing_ok $SESSION_NAME
 118         run_apps
 119         diag "Waiting for applications to end"
 120         wait
 121         pass "waiting done"
 122         stop_lttng_tracing_ok $SESSION_NAME
 123         destroy_lttng_session_ok $SESSION_NAME
 124         validate_event_count
 125 }
 126
 127 function validate_event_count
 128 {
 129
 130         TEMP_FILE=$(mktemp)
 131         TEMP_FILE_2=$(mktemp)
 132
 133         traced=$(babeltrace $TRACE_PATH 2>/dev/null | wc -l)
 134         babeltrace $TRACE_PATH >/dev/null 2>$TEMP_FILE_2
 135
 136         cat $TEMP_FILE_2 | cut -f4 -d " " >$TEMP_FILE
 137
 138         dropped=0
 139         while read line;
 140         do
 141                 let dropped=$dropped+$line
 142         done < $TEMP_FILE
 143
 144         let total=$dropped+$traced
 145         let wanted=$NR_APP_ITER*$NR_ITER
 146
 147         if [ $wanted -ne $total ]; then
 148                 fail "Validate trace event count"
 149                 diag "Expected $wanted. Dropped $dropped. Recorded $traced. Total $total... "
 150                 return 1
 151         else
 152                 pass "Validate trace event count"
 153                 diag "Expected $wanted. Dropped $dropped. Recorded $traced. Total $total... "
 154
 155                 rm -rf $TRACE_PATH
 156                 rm $TEMP_FILE $TEMP_FILE_2
 157
 158                 return 0
 159         fi
 160 }
 161
 162 function interrupt_cleanup()
 163 {
 164         diag "*** Exiting ***"
 165         reset_bw_limit
 166         # invoke utils cleanup
 167         full_cleanup
 168 }
 169
 170 plan_tests $NUM_TESTS
 171
 172 print_test_banner "$TEST_DESC"
 173
 174 if [ "$(id -u)" == "0" ]; then
 175         isroot=1
 176 else
 177         isroot=0
 178 fi
 179
 180 skip $isroot "Root access is needed to set bandwith limits. Skipping all tests." $NUM_TESTS ||
 181 {
 182
 183         # Catch sigint and try to cleanup limits
 184         trap interrupt_cleanup SIGTERM SIGINT
 185
 186         BW_LIMITS=(3200 1600 800 400 200 100 50 25)
 187         for BW in ${BW_LIMITS[@]};
 188         do
 189                 diag "Test high-throughput with bandwidth limit set to ${BW}kbits"
 190
 191                 set_bw_limit $BW
 192                 ok $? "Setting bandwidth limit"
 193
 194                 start_lttng_sessiond
 195                 start_lttng_relayd "-o $TRACE_PATH"
 196                 test_high_throughput
 197                 result=$?
 198                 stop_lttng_relayd
 199                 stop_lttng_sessiond
 200                 reset_bw_limit
 201                 ok $? "Reset bandwith limits"
 202         done
 203 }