"blade create network delay " should consider "limit" parameter of TC

[xirs]

Issue Description

"blade create network delay " should consider "limit" parameter of TC

Describe what happened (or what feature you want)

we found when using "blade create network delay" at a higher busy net environment, packets are lost

Describe what you expected to happen

please refer "limit" paramter of TC

1. https://man7.org/linux/man-pages/man8/tc-netem.8.html
2. https://stackoverflow.com/questions/18792347/what-does-option-limit-in-tc-netem-mean-and-do

I think it should adjust limit paramter:

for a 1 Gbps link, 1 Gbps / 1500 bytes MTU * 100 ms * 1.5 = 12500.

Command:

sudo tc qdisc add dev eth1 root netem limit 12500 delay 100ms loss 1%

How to reproduce it (as minimally and precisely as possible)

Tell us your environment

Anything else we need to know?

[spencercjh]

Can you provide more detailed info about tc delay causing packet loss on the network?