task_delay_estimate

Measurement to Validate Task Delay Estimate

This measurement monitors tasks arranged as the fork pipeline:

                +--------+
                |        |
             -->|  Task  |
            /   |        |
+--------+ /    +--------+
|        |/
|  Task  |
|        |\
+--------+ \    +--------+
            \   |        |
             -->|  Task  |
                |        |
                +--------+

                   ...

Requirements

• Our BESS fork (our-plugins branch)
• Python3
• pandas
• matplotlib

Execution

1. Collect measurement data

Parameters:

• num_tasks: number of egress tasks
• meas_interval: measurement time in seconds

cd bess/bessctl
 ./bessctl run local/dtf-estimate-check meas_interval=10,num_tasks=2 > /tmp/out.csv

2. Plot measurement data

./plot_dtf_estimate_check.py /tmp/out.csv