# \[PATCH\] selftests/net: fin\_ack\_lat: fix latency threshold typo

- From: Brian Grech \<hidden\>
- Date: 2026-08-04 22:01:19 
- List: netdev
- Page: https://ratatoskr.run/netdev/2026/08/17365735
- Thread: https://ratatoskr.run/netdev/2026/07/17349643/t.md

```text
The FIN-ACK latency threshold was written as 100000 (100ms) instead
of the intended 1000000 (1 second). Connections completing between
100ms and 1 second were incorrectly flagged as high-latency outliers
and printed as failures on loaded systems.

Add the missing zero to restore the intended 1 second threshold.

Signed-off-by: Brian Grech <redacted>
---
v2: Added missing maintainer CCs

 tools/testing/selftests/net/fin_ack_lat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/fin_ack_lat.c b/tools/testing/selftests/net/fin_ack_lat.c
index 70187494b57a..4117332eb1a9 100644
--- a/tools/testing/selftests/net/fin_ack_lat.c
+++ b/tools/testing/selftests/net/fin_ack_lat.c
@@ -69,7 +69,7 @@ static void client(int port)
 		lat = timediff(start, end);
 		sum_lat += lat;
 		nr_lat++;
-		if (lat < 100000)
+		if (lat < 1000000)
 			goto close;
 
 		if (getsockname(sock, (struct sockaddr *)&laddr, &len) == -1)
-- 
2.55.0

```