Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH 4/5] perf, tools: flush output after each line in stat interval mode | Date | Fri, 2 Aug 2013 17:41:12 -0700 |
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From: Andi Kleen <ak@linux.intel.com>
When interval mode is outputting to a pipe, each measurement should be flushed individually, so that the reader sees it timely.
With a terminal each line is automatically flushed by stdio, but that is disabled with non terminal output.
Simply fflush output after each time interval
Signed-off-by: Andi Kleen <ak@linux.intel.com> --- tools/perf/builtin-stat.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 2e637e4..f686d5f 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -416,6 +416,8 @@ static void print_interval(void) list_for_each_entry(counter, &evsel_list->entries, node) print_counter_aggr(counter, prefix); } + + fflush(output); } static void handle_initial_delay(void) -- 1.8.3.1
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