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Miller" , Simon Horman , Shuah Khan , Nikolay Aleksandrov , netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, Alice Mikityanska Subject: [PATCH net v2 2/4] selftests: net: Lower threshold on debug kernels for big_tcp_tunnels.sh Date: Sat, 22 Aug 2026 15:03:06 +0300 Message-ID: <20260822120308.1165200-3-alice.kernel@fastmail.im> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260822120308.1165200-1-alice.kernel@fastmail.im> References: <20260822120308.1165200-1-alice.kernel@fastmail.im> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Alice Mikityanska Debug kernels on upstream CI runners run slower and generate fewer BIG TCP packets, making the test flaky on upstream CI runners. Lower the default threshold for those kernels. Fixes: 5cb53743e1ff ("selftests: net: Add a test for BIG TCP in UDP tunnels") Signed-off-by: Alice Mikityanska --- tools/testing/selftests/net/big_tcp_tunnels.sh | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/net/big_tcp_tunnels.sh b/tools/testing/selftests/net/big_tcp_tunnels.sh index 9b7d0456bcc1..e0b41f394ebb 100755 --- a/tools/testing/selftests/net/big_tcp_tunnels.sh +++ b/tools/testing/selftests/net/big_tcp_tunnels.sh @@ -17,11 +17,18 @@ CLIENT_IP6="2001:db8::1:2" CLIENT_IP4_TUN="192.168.2.2" CLIENT_IP6_TUN="2001:db8::2:2" -: "${PACKETS_THRESHOLD:=1000}" - # Kselftest framework requirement - SKIP code is 4. ksft_skip=4 +if [ -z "$PACKETS_THRESHOLD" ]; then + if [ "$KSFT_MACHINE_SLOW" = yes ]; then + echo 'Debug kernel detected, lowering the default threshold' + PACKETS_THRESHOLD=100 + else + PACKETS_THRESHOLD=1000 + fi +fi + setup() { ip netns add "$SERVER_NS" ip netns add "$CLIENT_NS" -- 2.55.0