Available Bandwidth Measurement Using Real Time Operating Systems

Available Bandwidth Measurement Using Real Time Operating Systems Dennis S. Knoop

Proposal The goal of this project is to study the effectiveness of using a Real Time Operating System to improve the accuracy of network measurement.

Historical Background BPrope and Cprobe developed by n Tool uses ICMP echo request n UCCS students, under the supervision of Dr. Chow, have modified the available bandwidth tool n Sending time gaps are still a problem n

Project Plan Analyze current ABWM Tool n Research Real-Time Operating Systems n Load Real-time operating system n Port current ABWM Tool to RTOS n Analyze results n

Real Time Operating Systems n Basic Concepts

UC/II Strengths n Weaknesses n

RTLinux Strengths n Weakneses n

RTLinux Basic Concept n Modules n Scheduling n Threads n

ABWM Tool Original Tool n Analysis n Improvements needed n Timing of initial time gaps n Re-Engineering/Port needed n

RTABWM Tool Modification Made n Critical Code n Accuracy of results n

Linux Schedulers SCHED_OTHER n SCHED_RR n SCHED_FIFO n

Comparison of Results

Current Status Analyzed current ABW Tool n Research Real Time Operating Systems n Chose RTLinux as RTOS of choice n Loaded RTLinux on viva. uccs. edu server n Ran sample/example programs n Working on Port of ABW Tool to RTLinux n

Conclusion n Result of testing n Future Work n Questions?