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Date: Thu, 31 Jan 2019 22:35:15 +0000 From: Petr Machata <petrm@...lanox.com> To: "netdev@...r.kernel.org" <netdev@...r.kernel.org> CC: Ido Schimmel <idosch@...lanox.com> Subject: [PATCH net-next 04/11] selftests: forwarding: mirror_gre_changes: Fix TTL test When running in a simulator, the TTL change takes a while to settle and during this time the performance of the packet processing is lowered. The resulting instability leads to ping sending more packets as it assumes some have been dropped. This then leads to regular spurious failures as more packets than expected are observed. Sleep a bit to give the system time to stabilize. Signed-off-by: Petr Machata <petrm@...lanox.com> --- tools/testing/selftests/net/forwarding/mirror_gre_changes.sh | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_changes.sh b/tools/testing/selftests/net/forwarding/mirror_gre_changes.sh index 135902aa8b11..472bd023e2a5 100755 --- a/tools/testing/selftests/net/forwarding/mirror_gre_changes.sh +++ b/tools/testing/selftests/net/forwarding/mirror_gre_changes.sh @@ -79,6 +79,7 @@ test_span_gre_ttl() mirror_test v$h1 192.0.2.1 192.0.2.2 $h3 77 0 ip link set dev $tundev type $type ttl 50 + sleep 2 mirror_test v$h1 192.0.2.1 192.0.2.2 $h3 77 10 ip link set dev $tundev type $type ttl 100 -- 2.4.11
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