#!/bin/bash
#
# Copyright (C) 2013 Christian Babeux <christian.babeux@efficios.com>
+# Copyright (C) 2020 Jérémie Galarneau <jeremie.galarneau@efficios.com>
#
# SPDX-License-Identifier: LGPL-2.1-only
TEST_DESC="Tracefile count limits"
-CURDIR=$(dirname $0)/
+CURDIR=$(dirname "$0")/
TESTDIR=$CURDIR/../../..
TESTAPP_PATH="$TESTDIR/utils/testapp"
STATS_BIN="$TESTDIR/utils/babelstats.pl"
NUM_TESTS=74
-NUM_CPUS=`nproc`
+NUM_CPUS=$(nproc)
PAGE_SIZE=$(getconf PAGE_SIZE)
+TRACEFILE_SIZE=$PAGE_SIZE
-source $TESTDIR/utils/utils.sh
+source "$TESTDIR"/utils/utils.sh
if [ ! -x "$TESTAPP_BIN" ]; then
BAIL_OUT "No UST events binary detected."
channel_name="$2"
tracefile_count_limit="$3"
- test_name="Enable channel $channel_name "
- test_name+="for session $sess_name: "
+ test_name="Enable channel \`$channel_name\` "
+ test_name+="for session \`$sess_name\`: "
test_name+="$tracefile_count_limit tracefiles"
- $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel \
- -u $channel_name -s $sess_name \
- -C $(($PAGE_SIZE*3)) -W $tracefile_count_limit \
- --overwrite >/dev/null 2>&1
+ "$TESTDIR"/../src/bin/lttng/"$LTTNG_BIN" enable-channel \
+ -u "$channel_name" -s "$sess_name" \
+ --subbuf-size "$PAGE_SIZE" \
+ --tracefile-size "$TRACEFILE_SIZE" \
+ --tracefile-count "$tracefile_count_limit" >/dev/null 2>&1
ok $? "$test_name"
}
-function enable_ust_lttng_event_per_channel ()
-{
- sess_name="$1"
- event_name="$2"
- channel_name="$3"
-
- test_name="Enable event $event_name "
- test_name+="for session $sess_name "
- test_name+="in channel $channel_name"
-
- $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" \
- -s $sess_name -u -c $channel_name >/dev/null 2>&1
-
- ok $? "$test_name"
-}
-
-function validate_min_max
+function validate_min_max ()
{
stats="$1"
field="$2"
return $?
}
-function validate_file_count
+function get_total_stream_file_size ()
{
- path="$1"
- file_pattern="$2"
- expected_max_count="$3"
-
- count=`find $path -name "$file_pattern" -type f \( ! -iname "*.idx" \) | wc -l`
-
- if [ "$count" -gt "$expected_max_count" ]; then
- fail "Validate file count: $file_pattern"
- diag "File count: $count expected: $expected_max_count"
- else
- pass "Validate file count: $file_pattern"
- fi
+ local trace_path="$1"
+ local stream_name_pattern="$2"
+ local size
+
+ size=$(find "$trace_path" -type f -regex "$stream_name_pattern" -exec du -b -c {} + | tail -n1 | cut -f 1)
+ echo "$size"
}
-function test_tracefile_count_limit ()
+function get_stream_file_count ()
{
- count_limit="$1"
- trace_path=$(mktemp -d)
- session_name=$(randstring 16 0)
- channel_name="channel"
- event_name="tp:tptest"
- num_iter=100000
- expected_max=$(($num_iter - 1))
+ local trace_path="$1"
+ local stream_name_pattern="$2"
+ local count
- diag "Test tracefile count limit : $count_limit tracefiles"
-
- create_lttng_session_ok $session_name $trace_path
-
- enable_lttng_channel_count_limit \
- $session_name $channel_name $count_limit
+ count=$(find "$trace_path" -type f -regex "$stream_name_pattern" | wc -l)
+ echo "$count"
+}
- enable_ust_lttng_event_per_channel \
- $session_name $event_name $channel_name
+function test_tracefile_count_limit ()
+{
+ local count_limit="$1"
+
+ local channel_name="channel"
+ local cpuno=$((RANDOM % NUM_CPUS))
+ local event_name="tp:tptest"
+ local expected_size=$((count_limit * TRACEFILE_SIZE))
+ local num_iter=100000
+ local previous_stream_size=-1
+ local session_name
+ local stream_pattern=".*${channel_name}_${cpuno}_[0-9]*"
+ local stream_size=0
+ local trace_path
- start_lttng_tracing_ok $session_name
+ session_name=$(randstring 16 0)
+ trace_path=$(mktemp -d)
- $TESTAPP_BIN -i $num_iter >/dev/null 2>&1
+ diag "Test tracefile count limit : CPU $cpuno, $count_limit tracefiles, expecting a maximum of $expected_size bytes per CPU"
- stop_lttng_tracing_ok $session_name
+ create_lttng_session_ok "$session_name" "$trace_path"
- destroy_lttng_session_ok $session_name
+ enable_lttng_channel_count_limit \
+ "$session_name" "$channel_name" "$count_limit"
+
+ enable_ust_lttng_event_ok \
+ "$session_name" "$event_name" "$channel_name"
+
+ # Run the test app until the total stream size stops changing the
+ # expected size is exceeded (error).
+ #
+ # The `$stream_size` will not stabilize until the trace file count
+ # limit is reached. This is guaranteed by the use of start/produce/stop
+ # cycles forcing the consumption of buffers, preventing unwanted stall
+ # in stream size.
+ while [ "$stream_size" -ne "$previous_stream_size" ]; do
+ start_lttng_tracing_notap "$session_name"
+ taskset -c "$cpuno" "$TESTAPP_BIN" -i "$num_iter" >/dev/null 2>&1
+ stop_lttng_tracing_notap "$session_name"
+
+ previous_stream_size="$stream_size"
+ stream_size=$(get_total_stream_file_size "$trace_path" "$stream_pattern")
+ diag "Completed an iteration: previous size = $previous_stream_size bytes, new size = $stream_size bytes"
+
+ if [ "$stream_size" -gt "$expected_size" ]; then
+ diag "Total size for CPU $cpuno exceeds expected size: stream size = $stream_size bytes, expected size = $expected_size"
+ break
+ fi
+ done
- # Validate tracing dir
+ destroy_lttng_session_ok "$session_name"
- for cpuno in $(seq 0 $(($NUM_CPUS - 1)))
- do
- validate_file_count \
- $trace_path "${channel_name}_${cpuno}_*" $count_limit
- done
+ [ "$expected_size" -eq "$stream_size" ]
+ ok $? "Total stream size of CPU $cpuno is $expected_size"
- # Validate tracing data
+ [ "$(get_stream_file_count "$trace_path" "$stream_pattern")" -eq "$count_limit" ]
+ ok $? "Stream meets the trace file limit of $count_limit"
stats=`babeltrace $trace_path | $STATS_BIN --tracepoint $event_name`
validate_min_max "$stats" "longfield" "[0-9]+" "$expected_max"
ok $? "Trace validation - longfield"
- rm -rf $trace_path
+ rm -rf "$trace_path"
}
LIMITS=("1" "2" "4" "8" "10" "16" "32" "64")
-# The file count validation depends on the number of streams (1 per cpu)
-TOTAL_TESTS=$(($NUM_TESTS + (${#LIMITS[@]} * $NUM_CPUS)))
-
-plan_tests $TOTAL_TESTS
+plan_tests $NUM_TESTS
print_test_banner "$TEST_DESC"
start_lttng_sessiond
-for limit in ${LIMITS[@]};
+for limit in "${LIMITS[@]}";
do
- test_tracefile_count_limit $limit
+ test_tracefile_count_limit "$limit"
done
stop_lttng_sessiond
projects / lttng-tools.git / blobdiff