Bug#971352: Some packets are slowed down
Package: linux-image-amd64
Version: 4.19.0-6-amd64
System are: debian10
Hardware: Fujitsu (RX2530)
NIC: Mellanox Technologies MT27710 Family [ConnectX-4 Lx]
Problem: Some packets are slowed down
root@ds1.sb:~# traceroute X.X.X.X
traceroute to X.X.X.X (X.X.X.X), 30 hops max, 60 byte packets
1 "ROUTER with debian10 kernel 4.19.0-8-amd64" (A.B.C.D) 0.061 ms 0.040 ms 0.023 ms
2 "ROUTER with debian10 kernel 4.19.0-8-amd64" (W.X.Y.Z) 3.812 ms 3.807 ms 3.792 ms
3 HOST (X.X.X.X) 3.861 ms 3.858 ms 3.820 ms
# ping -i 0.1 X.X.X.X
PING X.X.X.X (X.X.X.X) 56(84) bytes of data.
64 bytes from X.X.X.X: icmp_seq=1 ttl=62 time=3.92 ms
64 bytes from X.X.X.X: icmp_seq=2 ttl=62 time=3.99 ms
64 bytes from X.X.X.X: icmp_seq=3 ttl=62 time=3.90 ms
64 bytes from X.X.X.X: icmp_seq=4 ttl=62 time=3.90 ms
64 bytes from X.X.X.X: icmp_seq=5 ttl=62 time=3.88 ms
64 bytes from X.X.X.X: icmp_seq=6 ttl=62 time=118 ms
64 bytes from X.X.X.X: icmp_seq=7 ttl=62 time=15.6 ms
64 bytes from X.X.X.X: icmp_seq=8 ttl=62 time=3.86 ms
64 bytes from X.X.X.X: icmp_seq=9 ttl=62 time=3.88 ms
64 bytes from X.X.X.X: icmp_seq=10 ttl=62 time=3.92 ms
64 bytes from X.X.X.X: icmp_seq=11 ttl=62 time=3.92 ms
64 bytes from X.X.X.X: icmp_seq=12 ttl=62 time=27.8 ms
64 bytes from X.X.X.X: icmp_seq=13 ttl=62 time=11.2 ms
64 bytes from X.X.X.X: icmp_seq=14 ttl=62 time=29.3 ms
64 bytes from X.X.X.X: icmp_seq=15 ttl=62 time=3.96 ms
64 bytes from X.X.X.X: icmp_seq=16 ttl=62 time=3.91 ms
64 bytes from X.X.X.X: icmp_seq=17 ttl=62 time=3.89 ms
64 bytes from X.X.X.X: icmp_seq=18 ttl=62 time=3.92 ms
64 bytes from X.X.X.X: icmp_seq=19 ttl=62 time=3.89 ms
64 bytes from X.X.X.X: icmp_seq=20 ttl=62 time=21.8 ms
64 bytes from X.X.X.X: icmp_seq=21 ttl=62 time=3.88 ms
64 bytes from X.X.X.X: icmp_seq=22 ttl=62 time=3.91 ms
64 bytes from X.X.X.X: icmp_seq=23 ttl=62 time=3.86 ms
64 bytes from X.X.X.X: icmp_seq=24 ttl=62 time=3.92 ms
64 bytes from X.X.X.X: icmp_seq=25 ttl=62 time=41.9 ms
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