tests/regression/tools/tracefile-limits/test_tracefile_size

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2013 Christian Babeux <christian.babeux@efficios.com>
   4 #
   5 # SPDX-License-Identifier: LGPL-2.1-only
   6
   7 TEST_DESC="Tracefile size limits"
   8
   9 CURDIR=$(dirname $0)/
  10 TESTDIR=$CURDIR/../../..
  11
  12 NR_ITER=1000
  13
  14 PAGE_SIZE=$(getconf PAGE_SIZE)
  15
  16 TESTAPP_PATH="$TESTDIR/utils/testapp"
  17 TESTAPP_NAME="gen-ust-events"
  18 TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
  19
  20 NUM_TESTS=74
  21
  22 source $TESTDIR/utils/utils.sh
  23
  24 if [ ! -x "$TESTAPP_BIN" ]; then
  25         BAIL_OUT "No UST events binary detected."
  26 fi
  27
  28 function enable_lttng_channel_size_limit ()
  29 {
  30         sess_name="$1"
  31         channel_name="$2"
  32         tracefile_size_limit="$3"
  33
  34         test_name="Enable channel $channel_name "
  35         test_name+="for session $sess_name: "
  36         test_name+="$tracefile_size_limit bytes tracefile limit"
  37
  38         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel \
  39             -u $channel_name -s $sess_name --buffers-pid \
  40             --subbuf-size=$PAGE_SIZE \
  41             -C $tracefile_size_limit >/dev/null 2>&1
  42
  43         ok $? "$test_name"
  44 }
  45
  46 function enable_ust_lttng_event_per_channel ()
  47 {
  48         sess_name="$1"
  49         event_name="$2"
  50         channel_name="$3"
  51
  52         test_name="Enable event $event_name "
  53         test_name+="for session $sess_name "
  54         test_name+="in channel $channel_name"
  55
  56         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" \
  57             -s $sess_name -u -c $channel_name >/dev/null 2>&1
  58
  59         ok $? "$test_name"
  60 }
  61
  62 function check_file_size ()
  63 {
  64         path="$1"
  65         file_pattern="$2"
  66         expected_max_size="$3"
  67
  68         find $path -name "$file_pattern" -exec stat -c '%n %s' {} \; \
  69             | while read file_info;
  70         do
  71                 name=$(echo $file_info | cut -f1 -d ' ')
  72                 size=$(echo $file_info | cut -f2 -d ' ')
  73
  74                 if [ "$size" -gt "$expected_max_size" ]; then
  75                         diag_msg="file: $name size: $size"
  76                         diag_msg+="expected maximum size: $expected_max_size"
  77                         diag "$diag_msg"
  78                         exit 1
  79                 fi
  80         done
  81
  82         ok $? "File size validation"
  83 }
  84
  85 function test_tracefile_size_limit ()
  86 {
  87         local size_limit="$1"
  88         local trace_path=$(mktemp -d -t "tmp.${FUNCNAME[0]}_trace_path.XXXXXX")
  89         local session_name=$(randstring 16 0)
  90         local channel_name="channel"
  91         local event_name="tp:tptest"
  92
  93         diag "Test tracefile size limit : $size_limit bytes"
  94
  95         create_lttng_session_ok $session_name $trace_path
  96
  97         enable_lttng_channel_size_limit \
  98             $session_name $channel_name $size_limit
  99
 100         enable_ust_lttng_event_per_channel \
 101             $session_name $event_name $channel_name
 102
 103         start_lttng_tracing_ok $session_name
 104
 105         $TESTAPP_BIN -i $NR_ITER >/dev/null 2>&1
 106
 107         stop_lttng_tracing_ok $session_name
 108
 109         destroy_lttng_session_ok $session_name
 110
 111         # Validate file size, each one shall be no larger than the
 112         # specified size limit
 113
 114         check_file_size $trace_path "${channel_name}_*" $size_limit
 115
 116         # Validate tracing data, we should at least have some events
 117
 118         validate_trace_path_ust_pid "$trace_path" "" "gen-ust-events"
 119         validate_trace $event_name $trace_path
 120
 121         rm -rf $trace_path
 122 }
 123
 124 function test_tracefile_size_limit_pagesize ()
 125 {
 126         # Set a size limit lower than the page_size
 127         local size_limit="$(($PAGE_SIZE-2))"
 128         local trace_path=$(mktemp -d -t "tmp.${FUNCNAME[0]}_trace_path.XXXXXX")
 129         local session_name=$(randstring 16 0)
 130         local channel_name="channel"
 131         local event_name="tp:tptest"
 132
 133         diag "Test tracefile size limit lower than PAGE_SIZE : $size_limit bytes"
 134
 135         create_lttng_session_ok $session_name $trace_path
 136
 137         enable_lttng_channel_size_limit \
 138             $session_name $channel_name $size_limit
 139
 140         enable_ust_lttng_event_per_channel \
 141             $session_name $event_name $channel_name
 142
 143         start_lttng_tracing_ok $session_name
 144
 145         $TESTAPP_BIN -i $NR_ITER >/dev/null 2>&1
 146
 147         stop_lttng_tracing_ok $session_name
 148
 149         destroy_lttng_session_ok $session_name
 150
 151         # Validate file size, expect file size to be equal to the page size
 152
 153         check_file_size $trace_path "${channel_name}_*" $PAGE_SIZE
 154
 155         # Validate tracing data, we should at least have some events
 156
 157         validate_trace_path_ust_pid "$trace_path" "" "gen-ust-events"
 158         validate_trace $event_name $trace_path
 159
 160         rm -rf $trace_path
 161 }
 162
 163 plan_tests $NUM_TESTS
 164
 165 print_test_banner "$TEST_DESC"
 166
 167 bail_out_if_no_babeltrace
 168
 169 start_lttng_sessiond
 170
 171 # Test with multiples of PAGE_SIZE
 172 LIMITS=("$(($PAGE_SIZE))"
 173         "$(($PAGE_SIZE*2))"
 174         "$(($PAGE_SIZE*4))"
 175         "$(($PAGE_SIZE*8))"
 176         "$(($PAGE_SIZE*16))"
 177         "$(($PAGE_SIZE*32))")
 178
 179 for limit in ${LIMITS[@]};
 180 do
 181         test_tracefile_size_limit $limit
 182 done
 183
 184 # Test with a value that is not a multiple of PAGE_SIZE
 185 test_tracefile_size_limit "$(($PAGE_SIZE+1024))"
 186
 187 # Test that a value lower than the PAGE_SIZE is rounded to it
 188 test_tracefile_size_limit_pagesize
 189
 190 stop_lttng_sessiond