| 1 | |
| 2 | |
| 3 |
|
| 4 | |
| 5 |
|
| 6 | trace_file=$(mktemp /tmp/perf.data.XXX)
|
| 7 | perf_tool=perf
|
| 8 |
|
| 9 | skip_if_no_z_record() {
|
| 10 | $perf_tool record -h 2>&1 | grep -q '\-z, \-\-compression\-level'
|
| 11 | }
|
| 12 |
|
| 13 | collect_z_record() {
|
| 14 | echo "Collecting compressed record file:"
|
| 15 | [ "$(uname -m)" != s390x ] && gflag='-g'
|
| 16 | $perf_tool record -o "$trace_file" $gflag -z -F 5000 -- \
|
| 17 | dd count=500 if=/dev/urandom of=/dev/null
|
| 18 | }
|
| 19 |
|
| 20 | check_compressed_stats() {
|
| 21 | echo "Checking compressed events stats:"
|
| 22 | $perf_tool report -i "$trace_file" --header --stats | \
|
| 23 | grep -E "(# compressed : Zstd,)|(COMPRESSED events:)"
|
| 24 | }
|
| 25 |
|
| 26 | check_compressed_output() {
|
| 27 | $perf_tool inject -i "$trace_file" -o "$trace_file.decomp" &&
|
| 28 | $perf_tool report -i "$trace_file" --stdio -F comm,dso,sym | head -n -3 > "$trace_file.comp.output" &&
|
| 29 | $perf_tool report -i "$trace_file.decomp" --stdio -F comm,dso,sym | head -n -3 > "$trace_file.decomp.output" &&
|
| 30 | diff "$trace_file.comp.output" "$trace_file.decomp.output"
|
| 31 | }
|
| 32 |
|
| 33 | skip_if_no_z_record || exit 2
|
| 34 | collect_z_record && check_compressed_stats && check_compressed_output
|
| 35 | err=$?
|
| 36 | rm -f "$trace_file*"
|
| 37 | exit $err
|