linux-kernel - [PATCH v13 11/16] perf record: Introduce data transferred and compressed stats

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Date:   Mon, 17 Jan 2022 21:34:31 +0300
From:   Alexey Bayduraev <alexey.v.bayduraev@...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>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Alexander Antonov <alexander.antonov@...ux.intel.com>,
        Alexei Budankov <abudankov@...wei.com>,
        Riccardo Mancini <rickyman7@...il.com>
Subject: [PATCH v13 11/16] perf record: Introduce data transferred and compressed stats

Introduce bytes_transferred and bytes_compressed stats so they
would capture statistics for the related data buffer transfers.

Acked-by: Andi Kleen <ak@...ux.intel.com>
Acked-by: Namhyung Kim <namhyung@...il.com>
Reviewed-by: Riccardo Mancini <rickyman7@...il.com>
Tested-by: Riccardo Mancini <rickyman7@...il.com>
Signed-off-by: Alexey Bayduraev <alexey.v.bayduraev@...ux.intel.com>
---
 tools/perf/builtin-record.c | 25 ++++++++++++++++++++++---
 1 file changed, 22 insertions(+), 3 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 7d0338b5a0e3..0f8488d12f44 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -111,6 +111,8 @@ struct record_thread {
 	unsigned long long	samples;
 	unsigned long		waking;
 	u64			bytes_written;
+	u64			bytes_transferred;
+	u64			bytes_compressed;
 };
 
 static __thread struct record_thread *thread;
@@ -1407,8 +1409,13 @@ static size_t zstd_compress(struct perf_session *session, struct mmap *map,
 	compressed = zstd_compress_stream_to_records(zstd_data, dst, dst_size, src, src_size,
 						     max_record_size, process_comp_header);
 
-	session->bytes_transferred += src_size;
-	session->bytes_compressed  += compressed;
+	if (map && map->file) {
+		thread->bytes_transferred += src_size;
+		thread->bytes_compressed  += compressed;
+	} else {
+		session->bytes_transferred += src_size;
+		session->bytes_compressed  += compressed;
+	}
 
 	return compressed;
 }
@@ -2098,8 +2105,20 @@ static int record__stop_threads(struct record *rec)
 	for (t = 1; t < rec->nr_threads; t++)
 		record__terminate_thread(&thread_data[t]);
 
-	for (t = 0; t < rec->nr_threads; t++)
+	for (t = 0; t < rec->nr_threads; t++) {
 		rec->samples += thread_data[t].samples;
+		if (!record__threads_enabled(rec))
+			continue;
+		rec->session->bytes_transferred += thread_data[t].bytes_transferred;
+		rec->session->bytes_compressed += thread_data[t].bytes_compressed;
+		pr_debug("threads[%d]: samples=%lld, wakes=%ld, ", thread_data[t].tid,
+			 thread_data[t].samples, thread_data[t].waking);
+		if (thread_data[t].bytes_transferred && thread_data[t].bytes_compressed)
+			pr_debug("trasferred=%ld, compressed=%ld\n",
+				 thread_data[t].bytes_transferred, thread_data[t].bytes_compressed);
+		else
+			pr_debug("written=%ld\n", thread_data[t].bytes_written);
+	}
 
 	return 0;
 }
-- 
2.19.0