On the constancy of internet path properties
IMW '01 Proceedings of the 1st ACM SIGCOMM Workshop on Internet Measurement
EtE: Passive End-to-End Internet Service Performance Monitoring
ATEC '02 Proceedings of the General Track of the annual conference on USENIX Annual Technical Conference
High-Performance Memory-Based Web Servers: Kernel and User-Space Performance
Proceedings of the General Track: 2002 USENIX Annual Technical Conference
Thin, High Performance Computing over the Internet
MASCOTS '00 Proceedings of the 8th International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems
Non-Intrusive Estimation of Web Server Delays
LCN '01 Proceedings of the 26th Annual IEEE Conference on Local Computer Networks
A Feedback Control Approach for Guaranteeing Relative Delays in Web Servers
RTAS '01 Proceedings of the Seventh Real-Time Technology and Applications Symposium (RTAS '01)
Using certes to infer client response time at the web server
ACM Transactions on Computer Systems (TOCS)
Measuring client-perceived response times on the WWW
USITS'01 Proceedings of the 3rd conference on USENIX Symposium on Internet Technologies and Systems - Volume 3
Capturing network traffic with a MAGNeT
ALS '01 Proceedings of the 5th annual Linux Showcase & Conference - Volume 5
Measurement and analysis of IP network usage and behavior
IEEE Communications Magazine
Robust Processing Rate Allocation for Proportional Slowdown Differentiation on Internet Servers
IEEE Transactions on Computers
An operating system architecture for network processors
Proceedings of the 2005 ACM symposium on Architecture for networking and communications systems
Understanding the management of client perceived response time
SIGMETRICS '06/Performance '06 Proceedings of the joint international conference on Measurement and modeling of computer systems
The Study of Multi-agent Network Flow Architecture for Application Performance Evaluation
KES-AMSTA '07 Proceedings of the 1st KES International Symposium on Agent and Multi-Agent Systems: Technologies and Applications
Passive, Streaming Inference of TCP Connection Structure for Network Server Management
TMA '09 Proceedings of the First International Workshop on Traffic Monitoring and Analysis
A self-tuning fuzzy control approach for end-to-end QoS guarantees in web servers
IWQoS'05 Proceedings of the 13th international conference on Quality of Service
WISE'12 Proceedings of the 13th international conference on Web Information Systems Engineering
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As dependence on the World Wide Web continues to grow, so does the need for businesses to have quantitative measures of the client perceived response times of their Web services. We present ksniffer, a kernel-based traffic monitor capable of determining pageview response times as perceived by remote clients, in real-time at gigabit traffic rates. ksniffer is based on novel, online mechanisms that take a "look once, then drop" approach to packet analysis to reconstruct TCP connections and learn client pageview activity. These mechanisms are designed to operate accurately with live network traffic even in the presence of packet loss and delay, and can be efficiently implemented in kernel space. This enables ksniffer to perform analysis that exceeds the functionality of current traffic analyzers while doing so at high bandwidth rates. ksniffer requires only to passively monitor network traffic and can be integrated with systems that perform server management to achieve specified response time goals. Our experimental results demonstrate that ksniffer can run on an inexpensive, commodity, Linux-based PC and provide online pageview response time measurements, across a wide range of operating conditions, that are within five percent of the response times measured at the client by detailed instrumentation.