linux-kernel - [PATCH 6/8] perf, tools, stat: Document CSV format in manpage

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Date:	Sat, 30 Jan 2016 09:06:54 -0800
From:	Andi Kleen <andi@...stfloor.org>
To:	acme@...nel.org
Cc:	jolsa@...nel.org, eranian@...gle.com, mingo@...nel.org,
	linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 6/8] perf, tools, stat: Document CSV format in manpage

From: Andi Kleen <ak@...ux.intel.com>

With all the recently added fields in the perf stat CSV output
we should finally document them in the man page. Do this here.

v2: Fix fields in documentation (Jiri)
v3: fix order of fields again (Jiri)
Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 tools/perf/Documentation/perf-stat.txt | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
index 52ef7a9..871802b 100644
--- a/tools/perf/Documentation/perf-stat.txt
+++ b/tools/perf/Documentation/perf-stat.txt
@@ -211,6 +211,26 @@ $ perf stat -- make -j
 
  Wall-clock time elapsed:   719.554352 msecs
 
+CSV FORMAT
+----------
+
+With -x, perf stat is able to output a not-quite-CSV format output
+Commas in the output are not put into "". To make it easy to parse
+it is recommended to use a different character like -x \;
+
+The fields are in this order:
+
+	- optional usec time stamp in fractions of second (with -I xxx)
+	- counter value
+	- unit of the counter value or empty
+	- event name
+	- optional metric value
+	- optional unit of metric
+	- run time of counter
+	- percentage of measurement time the counter was running
+
+Additional metrics may be printed with all earlier fields being empty.
+
 SEE ALSO
 --------
 linkperf:perf-top[1], linkperf:perf-list[1]
-- 
2.4.3