tests/regression/tools/tracefile-limits/test_tracefile_size

   1 #!/bin/bash
   2 #
   3 # Copyright (C) - 2013 Christian Babeux <christian.babeux@efficios.com>
   4 #
   5 # This library is free software; you can redistribute it and/or modify it under
   6 # the terms of the GNU Lesser General Public License as published by the Free
   7 # Software Foundation; version 2.1 of the License.
   8 #
   9 # This library is distributed in the hope that it will be useful, but WITHOUT
  10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  11 # FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
  12 # details.
  13 #
  14 # You should have received a copy of the GNU Lesser General Public License
  15 # along with this library; if not, write to the Free Software Foundation, Inc.,
  16 # 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  17
  18 TEST_DESC="Tracefile size limits"
  19
  20 CURDIR=$(dirname $0)/
  21 TESTDIR=$CURDIR/../../..
  22
  23 NR_ITER=1000
  24
  25 PAGE_SIZE=$(getconf PAGE_SIZE)
  26
  27 TESTAPP_PATH="$TESTDIR/utils/testapp"
  28 TESTAPP_NAME="gen-ust-events"
  29 TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
  30
  31 NUM_TESTS=66
  32
  33 source $TESTDIR/utils/utils.sh
  34
  35 if [ ! -x "$TESTAPP_BIN" ]; then
  36         BAIL_OUT "No UST events binary detected."
  37 fi
  38
  39 function enable_lttng_channel_size_limit ()
  40 {
  41         sess_name="$1"
  42         channel_name="$2"
  43         tracefile_size_limit="$3"
  44
  45         test_name="Enable channel $channel_name "
  46         test_name+="for session $sess_name: "
  47         test_name+="$tracefile_size_limit bytes tracefile limit"
  48
  49         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel \
  50             -u $channel_name -s $sess_name --buffers-pid \
  51             --subbuf-size=$PAGE_SIZE \
  52             -C $tracefile_size_limit >/dev/null 2>&1
  53
  54         ok $? "$test_name"
  55 }
  56
  57 function enable_ust_lttng_event_per_channel ()
  58 {
  59         sess_name="$1"
  60         event_name="$2"
  61         channel_name="$3"
  62
  63         test_name="Enable event $event_name "
  64         test_name+="for session $sess_name "
  65         test_name+="in channel $channel_name"
  66
  67         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" \
  68             -s $sess_name -u -c $channel_name >/dev/null 2>&1
  69
  70         ok $? "$test_name"
  71 }
  72
  73 function check_file_size ()
  74 {
  75         path="$1"
  76         file_pattern="$2"
  77         expected_max_size="$3"
  78
  79         find $path -name "$file_pattern" -exec stat -c '%n %s' {} \; \
  80             | while read file_info;
  81         do
  82                 name=$(echo $file_info | cut -f1 -d ' ')
  83                 size=$(echo $file_info | cut -f2 -d ' ')
  84
  85                 if [ "$size" -gt "$expected_max_size" ]; then
  86                         diag_msg="file: $name size: $size"
  87                         diag_msg+="expected maximum size: $expected_max_size"
  88                         diag "$diag_msg"
  89                         exit 1
  90                 fi
  91         done
  92
  93         ok $? "File size validation"
  94 }
  95
  96 function test_tracefile_size_limit ()
  97 {
  98         size_limit="$1"
  99         trace_path=$(mktemp -d)
 100         session_name=$(randstring 16 0)
 101         channel_name="channel"
 102         event_name="tp:tptest"
 103
 104         diag "Test tracefile size limit : $size_limit bytes"
 105
 106         create_lttng_session_ok $session_name $trace_path
 107
 108         enable_lttng_channel_size_limit \
 109             $session_name $channel_name $size_limit
 110
 111         enable_ust_lttng_event_per_channel \
 112             $session_name $event_name $channel_name
 113
 114         start_lttng_tracing_ok $session_name
 115
 116         $TESTAPP_BIN $NR_ITER >/dev/null 2>&1
 117
 118         stop_lttng_tracing_ok $session_name
 119
 120         destroy_lttng_session_ok $session_name
 121
 122         # Validate file size, each one shall be no larger than the
 123         # specified size limit
 124
 125         check_file_size $trace_path "${channel_name}_*" $size_limit
 126
 127         # Validate tracing data, we should at least have some events
 128
 129         validate_trace $event_name $trace_path
 130
 131         rm -rf $trace_path
 132 }
 133
 134 function test_tracefile_size_limit_pagesize ()
 135 {
 136         # Set a size limit lower than the page_size
 137         size_limit="$(($PAGE_SIZE-2))"
 138         trace_path=$(mktemp -d)
 139         session_name=$(randstring 16 0)
 140         channel_name="channel"
 141         event_name="tp:tptest"
 142
 143         diag "Test tracefile size limit lower than PAGE_SIZE : $size_limit bytes"
 144
 145         create_lttng_session_ok $session_name $trace_path
 146
 147         enable_lttng_channel_size_limit \
 148             $session_name $channel_name $size_limit
 149
 150         enable_ust_lttng_event_per_channel \
 151             $session_name $event_name $channel_name
 152
 153         start_lttng_tracing_ok $session_name
 154
 155         $TESTAPP_BIN $NR_ITER >/dev/null 2>&1
 156
 157         stop_lttng_tracing_ok $session_name
 158
 159         destroy_lttng_session_ok $session_name
 160
 161         # Validate file size, expect file size to be equal to the page size
 162
 163         check_file_size $trace_path "${channel_name}_*" $PAGE_SIZE
 164
 165         # Validate tracing data, we should at least have some events
 166
 167         validate_trace $event_name $trace_path
 168
 169         rm -rf $trace_path
 170 }
 171
 172 plan_tests $NUM_TESTS
 173
 174 print_test_banner "$TEST_DESC"
 175
 176 start_lttng_sessiond
 177
 178 # Test with multiples of PAGE_SIZE
 179 LIMITS=("$(($PAGE_SIZE))"
 180         "$(($PAGE_SIZE*2))"
 181         "$(($PAGE_SIZE*4))"
 182         "$(($PAGE_SIZE*8))"
 183         "$(($PAGE_SIZE*16))"
 184         "$(($PAGE_SIZE*32))")
 185
 186 for limit in ${LIMITS[@]};
 187 do
 188         test_tracefile_size_limit $limit
 189 done
 190
 191 # Test with a value that is not a multiple of PAGE_SIZE
 192 test_tracefile_size_limit "$(($PAGE_SIZE+1024))"
 193
 194 # Test that a value lower than the PAGE_SIZE is rounded to it
 195 test_tracefile_size_limit_pagesize
 196
 197 stop_lttng_sessiond