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=58
  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             -C $tracefile_size_limit >/dev/null 2>&1
  52
  53         ok $? "$test_name"
  54 }
  55
  56 function enable_ust_lttng_event_per_channel ()
  57 {
  58         sess_name="$1"
  59         event_name="$2"
  60         channel_name="$3"
  61
  62         test_name="Enable event $event_name "
  63         test_name+="for session $sess_name "
  64         test_name+="in channel $channel_name"
  65
  66         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" \
  67             -s $sess_name -u -c $channel_name >/dev/null 2>&1
  68
  69         ok $? "$test_name"
  70 }
  71
  72 function check_file_size ()
  73 {
  74         path="$1"
  75         file_pattern="$2"
  76         expected_max_size="$3"
  77
  78         find $path -name "$file_pattern" -exec stat -c '%n %s' {} \; \
  79             | while read file_info;
  80         do
  81                 name=$(echo $file_info | cut -f1 -d ' ')
  82                 size=$(echo $file_info | cut -f2 -d ' ')
  83
  84                 if [ "$size" -gt "$expected_max_size" ]; then
  85                         diag_msg="file: $name size: $size"
  86                         diag_msg+="expected maximum size: $expected_max_size"
  87                         diag "$diag_msg"
  88                         exit 1
  89                 fi
  90         done
  91
  92         ok $? "File size validation"
  93 }
  94
  95 function test_tracefile_size_limit ()
  96 {
  97         size_limit="$1"
  98         trace_path=$(mktemp -d)
  99         session_name=$(randstring 16 0)
 100         channel_name="channel"
 101         event_name="tp:tptest"
 102
 103         diag "Test tracefile size limit : $size_limit bytes"
 104
 105         create_lttng_session_ok $session_name $trace_path
 106
 107         enable_lttng_channel_size_limit \
 108             $session_name $channel_name $size_limit
 109
 110         enable_ust_lttng_event_per_channel \
 111             $session_name $event_name $channel_name
 112
 113         start_lttng_tracing_ok $session_name
 114
 115         $TESTAPP_BIN $NR_ITER >/dev/null 2>&1
 116
 117         stop_lttng_tracing_ok $session_name
 118
 119         destroy_lttng_session_ok $session_name
 120
 121         # Validate file size, each one shall be no larger than the
 122         # specified size limit
 123
 124         check_file_size $trace_path "${channel_name}_*" $size_limit
 125
 126         # Validate tracing data, we should at least have some events
 127
 128         validate_trace $event_name $trace_path
 129
 130         rm -rf $trace_path
 131 }
 132
 133 function test_tracefile_size_limit_pagesize ()
 134 {
 135         # Set a size limit lower than the page_size
 136         size_limit="$(($PAGE_SIZE-2))"
 137         trace_path=$(mktemp -d)
 138         session_name=$(randstring 16 0)
 139         channel_name="channel"
 140         event_name="tp:tptest"
 141
 142         diag "Test tracefile size limit lower than PAGE_SIZE : $size_limit bytes"
 143
 144         create_lttng_session_ok $session_name $trace_path
 145
 146         enable_lttng_channel_size_limit \
 147             $session_name $channel_name $size_limit
 148
 149         enable_ust_lttng_event_per_channel \
 150             $session_name $event_name $channel_name
 151
 152         start_lttng_tracing_ok $session_name
 153
 154         $TESTAPP_BIN $NR_ITER >/dev/null 2>&1
 155
 156         stop_lttng_tracing_ok $session_name
 157
 158         destroy_lttng_session_ok $session_name
 159
 160         # Validate file size, expect file size to be equal to the page size
 161
 162         check_file_size $trace_path "${channel_name}_*" $PAGE_SIZE
 163
 164         # Validate tracing data, we should at least have some events
 165
 166         validate_trace $event_name $trace_path
 167
 168         rm -rf $trace_path
 169 }
 170
 171 plan_tests $NUM_TESTS
 172
 173 print_test_banner "$TEST_DESC"
 174
 175 start_lttng_sessiond
 176
 177 # Test with multiples of PAGE_SIZE
 178 LIMITS=("$(($PAGE_SIZE))"
 179         "$(($PAGE_SIZE*2))"
 180         "$(($PAGE_SIZE*4))"
 181         "$(($PAGE_SIZE*8))"
 182         "$(($PAGE_SIZE*16))"
 183         "$(($PAGE_SIZE*32))")
 184
 185 for limit in ${LIMITS[@]};
 186 do
 187         test_tracefile_size_limit $limit
 188 done
 189
 190 # Test with a value that is not a multiple of PAGE_SIZE
 191 test_tracefile_size_limit "$(($PAGE_SIZE+1024))"
 192
 193 # Test that a value lower than the PAGE_SIZE is rounded to it
 194 test_tracefile_size_limit_pagesize
 195
 196 stop_lttng_sessiond