linux-kernel - [PATCH v6 10/10] perf tests: implement Zstd comp/decomp integration test

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <53ae1b62-d959-64b1-97ce-2f4dc10a3ec8@linux.intel.com>
Date:   Tue, 5 Mar 2019 12:31:39 +0300
From:   Alexey Budankov <alexey.budankov@...ux.intel.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...hat.com>, Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Andi Kleen <ak@...ux.intel.com>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH v6 10/10] perf tests: implement Zstd comp/decomp integration
 test


Implemented basic integration test for Zstd based trace
compression/decompression in record and report modes.

Signed-off-by: Alexey Budankov <alexey.budankov@...ux.intel.com>
---
 .../tests/shell/record+zstd_comp_decomp.sh    | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100755 tools/perf/tests/shell/record+zstd_comp_decomp.sh

diff --git a/tools/perf/tests/shell/record+zstd_comp_decomp.sh b/tools/perf/tests/shell/record+zstd_comp_decomp.sh
new file mode 100755
index 000000000000..5cb2ab8e2112
--- /dev/null
+++ b/tools/perf/tests/shell/record+zstd_comp_decomp.sh
@@ -0,0 +1,28 @@
+#!/bin/sh
+# record trace Zstd compression/decompression
+
+trace_file=$(mktemp /tmp/perf.data.XXX)
+perf_tool=perf
+output=/dev/null
+
+skip_if_no_z_record() {
+	$perf_tool record -h 2>&1 | grep '\-z, \-\-compression\-level <n>'
+}
+
+collect_z_record() {
+	echo "Collecting compressed record trace file:"
+	$perf_tool record -o $trace_file -a -z 1 -F 25000 -e cycles -- \
+		dd count=2000 if=/dev/random of=/dev/null > $output 2>&1
+}
+
+check_compressed_stats() {
+	echo "Checking compressed events stats:"
+	$perf_tool report -i $trace_file --header --stats | \
+		grep -E "(# compressed : Zstd,)|(COMPRESSED events:)" > $output 2>&1
+}
+
+skip_if_no_z_record || exit 2
+collect_z_record && check_compressed_stats
+err=$?
+rm -f $trace_file
+exit $err
-- 
2.20.1