我试图展示排队效果如何随着时间的推移而延迟，所以我在从源到目的地发送iperf udp流量时从我的源ping我的目的地。但是我注意到我在ping时看到的延迟会在iperf持续时间内减少，这与我的预期不同。有人可以解释为什么会这样吗？注意：我还没有更改队列或任何其他设置
来源的iperf流量：
iperf -c destination -u -t 10 -b 10mb &
从ping输出（注意iperf启动时突然减少，当iperf完成时再次增加）
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=12 ttl=63 time=1.17 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=13 ttl=63 time=1.16 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=14 ttl=63 time=1.16 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=15 ttl=63 time=1.22 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=16 ttl=63 time=0.770 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=17 ttl=63 time=0.480 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=18 ttl=63 time=0.472 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=19 ttl=63 time=0.530 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=20 ttl=63 time=0.521 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=21 ttl=63 time=0.515 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=22 ttl=63 time=0.585 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=23 ttl=63 time=0.445 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=24 ttl=63 time=0.450 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=25 ttl=63 time=0.514 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=26 ttl=63 time=0.630 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=27 ttl=63 time=0.966 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=28 ttl=63 time=1.09 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=29 ttl=63 time=1.30 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=30 ttl=63 time=0.984 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=31 ttl=63 time=0.908 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=32 ttl=63 time=1.02 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=33 ttl=63 time=1.28 ms
64 bytes from Destination-link-1 (10.10.2.2): icmp_req=34 ttl=63 time=1.72 ms