| 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 |