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buildid.sh	3.68 KB	-rwxr-xr-x	2025-04-30 20:37:30	Edit Del
daemon.sh	10.53 KB	-rwxr-xr-x	2025-04-30 20:37:30	Edit Del
lib	-	drwxr-xr-x	2025-05-28 10:13:24	Del
probe_vfs_getname.sh	346 B	-rwxr-xr-x	2025-04-30 20:37:30	Edit Del
record+probe_libc_inet_pton.sh	3.04 KB	-rwxr-xr-x	2025-04-30 20:37:30	Edit Del
record+script_probe_vfs_getname.sh	1.21 KB	-rwxr-xr-x	2025-04-30 20:37:30	Edit Del
record+zstd_comp_decomp.sh	1.07 KB	-rwxr-xr-x	2025-04-30 20:37:30	Edit Del
stat+csv_summary.sh	631 B	-rwxr-xr-x	2025-04-30 20:37:30	Edit Del
stat+shadow_stat.sh	1.55 KB	-rwxr-xr-x	2025-04-30 20:37:30	Edit Del
stat_bpf_counters.sh	1.3 KB	-rwxr-xr-x	2025-04-30 20:37:30	Edit Del
test_arm_coresight.sh	4.79 KB	-rwxr-xr-x	2025-04-30 20:37:30	Edit Del
trace+probe_vfs_getname.sh	1.37 KB	-rwxr-xr-x	2025-04-30 20:37:30	Edit Del

Editing: record+zstd_comp_decomp.sh (1.07 KB)

#!/bin/sh
# Zstd perf.data compression/decompression

# SPDX-License-Identifier: GPL-2.0

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:"
	[[ "$(uname -m)" != s390x ]] && gflag='-g'
	$perf_tool record -o $trace_file $gflag -z -F 5000 -- \
		dd count=500 if=/dev/urandom 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