[dpdk-dev] [PATCH] app/testpmd: fix stdout flush absence after printing stats

[Andrew Rybchenko <arybchenko@solarflare.com>]

From: Igor Romanov <igor.romanov@oktetlabs.ru>

User can specify stats period(n). The statistics should be available
to user every n second. But the print_stats() function does not
force stdout to be flushed, so for instance, a user reading testpmd's
stdout through pipe will not be able to read it untill the stdout
buffer is filled.

Fixes: cfea1f3048d1 ("app/testpmd: print statistics periodically")
Cc: stable@dpdk.org

Signed-off-by: Igor Romanov <igor.romanov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
 app/test-pmd/testpmd.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index d9d0c16d4..216be47f9 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -3046,6 +3046,8 @@ print_stats(void)
 	printf("\nPort statistics ====================================");
 	for (i = 0; i < cur_fwd_config.nb_fwd_ports; i++)
 		nic_stats_display(fwd_ports_ids[i]);
+
+	fflush(stdout);
 }
 
 static void
-- 
2.17.1