Contents

1 Introduction
2 An Example of Using httperf
3 Design
	3.1 Sustaining Overload
		3.1.1 Limits to Client-Sustainable Load
	3.2 Measuring Throughput
4 Implementation
	4.1 Scheduling Granularity
	4.2 Limited Number of Ephemeral Ports
	4.3 Slow System Calls
	4.4 Future Directions
5 Conclusions