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| author | Jiri Olsa <jolsa@kernel.org> | 2017-03-05 17:40:11 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-03-06 12:39:30 -0300 |
| commit | 001916b94a04809a94abb07daba6f9ace01906ba (patch) | |
| tree | 243689550f762ede18e1f835deb439115045dd0d | |
| parent | c8c188679ccfc86d9c7bac57ecf4b8205a061a06 (diff) | |
perf bench numa: Add more comment for -c option
Adding more commentary for -c/--show_convergence option, to explain how
the convergence is defined.
Before:
-c, --show_convergence
show convergence details
Now:
-c, --show_convergence
convergence is reached when each process \
(all its threads) is running on a single NUMA node.
Suggested--by: Jiri Hladky <jhladky@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Hladky <jhladky@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1488732011-27384-1-git-send-email-jolsa@kernel.org
[ Rephrased a bit based on a IRC conversation with Jiri ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/bench/numa.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c index 3083fc36282b..6bd0581de298 100644 --- a/tools/perf/bench/numa.c +++ b/tools/perf/bench/numa.c @@ -187,7 +187,8 @@ static const struct option options[] = { OPT_INCR ('d', "show_details" , &p0.show_details, "Show details"), OPT_INCR ('a', "all" , &p0.run_all, "Run all tests in the suite"), OPT_INTEGER('H', "thp" , &p0.thp, "MADV_NOHUGEPAGE < 0 < MADV_HUGEPAGE"), - OPT_BOOLEAN('c', "show_convergence", &p0.show_convergence, "show convergence details"), + OPT_BOOLEAN('c', "show_convergence", &p0.show_convergence, "show convergence details, " + "convergence is reached when each process (all its threads) is running on a single NUMA node."), OPT_BOOLEAN('m', "measure_convergence", &p0.measure_convergence, "measure convergence latency"), OPT_BOOLEAN('q', "quiet" , &p0.show_quiet, "quiet mode"), OPT_BOOLEAN('S', "serialize-startup", &p0.serialize_startup,"serialize thread startup"), |