Netem set the network card traffic control, why the delay of the package can not be confused?

Why do I use Netem to do a flow control

But when sending, feel really send the data when still did not reach every packet is a 1s delay ah, here the 1s delay is what mean ah?

The delay here is not to say that each packet is delay 5s, but that after delay5s, all of a sudden sent out?

sudo tc qdisc add dev eth0 root netem delay 100s

All eth0 packets have to be delayed by 100s, starting with the queue, and we start timing, because all of the packets are in the first place on the waiting queue, and so it is understandable.

Netem set the network card traffic control, why the delay of the package can not be confused?