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-rw-r--r--tools/perf/Documentation/perf-stat.txt12
1 files changed, 9 insertions, 3 deletions
diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
index faf4f4feebcc..2fe87fb558f0 100644
--- a/tools/perf/Documentation/perf-stat.txt
+++ b/tools/perf/Documentation/perf-stat.txt
@@ -52,7 +52,7 @@ OPTIONS
-r::
--repeat=<n>::
- repeat command and print average + stddev (max: 100)
+ repeat command and print average + stddev (max: 100). 0 means forever.
-B::
--big-num::
@@ -119,13 +119,19 @@ perf stat --repeat 10 --null --sync --pre 'make -s O=defconfig-build/clean' -- m
Print count deltas every N milliseconds (minimum: 100ms)
example: perf stat -I 1000 -e cycles -a sleep 5
---aggr-socket::
+--per-socket::
Aggregate counts per processor socket for system-wide mode measurements. This
is a useful mode to detect imbalance between sockets. To enable this mode,
-use --aggr-socket in addition to -a. (system-wide). The output includes the
+use --per-socket in addition to -a. (system-wide). The output includes the
socket number and the number of online processors on that socket. This is
useful to gauge the amount of aggregation.
+--per-core::
+Aggregate counts per physical processor for system-wide mode measurements. This
+is a useful mode to detect imbalance between physical cores. To enable this mode,
+use --per-core in addition to -a. (system-wide). The output includes the
+core number and the number of online logical processors on that physical processor.
+
EXAMPLES
--------