blob: 5dcba800109fda162a2e00ca7df3a0258bf0b645 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
#!/bin/sh
# Zstd perf.data compression/decompression
trace_file=$(mktemp /tmp/perf.data.XXX)
perf_tool=perf
skip_if_no_z_record() {
$perf_tool record -h 2>&1 | grep -q '\-z, \-\-compression\-level'
}
collect_z_record() {
echo "Collecting compressed record file:"
$perf_tool record -o $trace_file -g -z -F 5000 -- \
dd count=500 if=/dev/random of=/dev/null
}
check_compressed_stats() {
echo "Checking compressed events stats:"
$perf_tool report -i $trace_file --header --stats | \
grep -E "(# compressed : Zstd,)|(COMPRESSED events:)"
}
check_compressed_output() {
$perf_tool inject -i $trace_file -o $trace_file.decomp &&
$perf_tool report -i $trace_file --stdio | head -n -3 > $trace_file.comp.output &&
$perf_tool report -i $trace_file.decomp --stdio | head -n -3 > $trace_file.decomp.output &&
diff $trace_file.comp.output $trace_file.decomp.output
}
skip_if_no_z_record || exit 2
collect_z_record && check_compressed_stats && check_compressed_output
err=$?
rm -f $trace_file*
exit $err
|
