perf test: Read child test 10 times a second rather than 1

Make the perf test output smoother by timing out the poll of the child
process after 100ms rather than 1s.

Signed-off-by: Ian Rogers <[email protected]>
Tested-by: Arnaldo Carvalho de Melo <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Athira Rajeev <[email protected]>
Cc: Christian Brauner <[email protected]>
Cc: Disha Goel <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: James Clark <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: K Prateek Nayak <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Song Liu <[email protected]>
Cc: Tim Chen <[email protected]>
Cc: Yicong Yang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

1 files changed, 2 insertions, 2 deletions

diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index e05b370b1e2b..ddb2f4e38ea5 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -307,8 +307,8 @@ static int finish_test(struct child_test *child_test, int width)
 		char buf[512];
 		ssize_t len;
 
-		/* Poll to avoid excessive spinning, timeout set for 1000ms. */
-		poll(pfds, ARRAY_SIZE(pfds), /*timeout=*/1000);
+		/* Poll to avoid excessive spinning, timeout set for 100ms. */
+		poll(pfds, ARRAY_SIZE(pfds), /*timeout=*/100);
 		if (!err_done && pfds[0].revents) {
 			errno = 0;
 			len = read(err, buf, sizeof(buf) - 1);