Measuring Round-Trip Response Latencies Under Asymmetric Routing
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866917313267105792 |
|---|---|
| author | Shobhana, Bhavana Vannarth Chien, Yen-lin Diamant, Jonathan Nath, Badri Feibish, Shir Landau Narayana, Srinivas |
| author_facet | Shobhana, Bhavana Vannarth Chien, Yen-lin Diamant, Jonathan Nath, Badri Feibish, Shir Landau Narayana, Srinivas |
| contents | Latency is a key indicator of Internet service performance. Continuously tracking the latency of client requests enables service operators to quickly identify bottlenecks, perform adaptive resource allocation or routing, and mitigate attacks. Passively measuring the response latency at intermediate vantage points is attractive since it provides insight into the experience of real clients without requiring client instrumentation or incurring probing overheads. This paper presents PIRATE, a passive approach to measure response latencies when only the client-to-server traffic is visible, even when transport headers are encrypted. PIRATE estimates the time gap between causal pairs - two requests such that the response to the first triggered the second - as a proxy for the client-side response latency. Our experiments with a realistic web application show that PIRATE can estimate the response latencies measured at the client application layer to within 1 percent. A PIRATE-enhanced layer-4 load balancer (with DSR) cuts tail latencies by 37 percent. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_14358 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Measuring Round-Trip Response Latencies Under Asymmetric Routing Shobhana, Bhavana Vannarth Chien, Yen-lin Diamant, Jonathan Nath, Badri Feibish, Shir Landau Narayana, Srinivas Networking and Internet Architecture Latency is a key indicator of Internet service performance. Continuously tracking the latency of client requests enables service operators to quickly identify bottlenecks, perform adaptive resource allocation or routing, and mitigate attacks. Passively measuring the response latency at intermediate vantage points is attractive since it provides insight into the experience of real clients without requiring client instrumentation or incurring probing overheads. This paper presents PIRATE, a passive approach to measure response latencies when only the client-to-server traffic is visible, even when transport headers are encrypted. PIRATE estimates the time gap between causal pairs - two requests such that the response to the first triggered the second - as a proxy for the client-side response latency. Our experiments with a realistic web application show that PIRATE can estimate the response latencies measured at the client application layer to within 1 percent. A PIRATE-enhanced layer-4 load balancer (with DSR) cuts tail latencies by 37 percent. |
| title | Measuring Round-Trip Response Latencies Under Asymmetric Routing |
| topic | Networking and Internet Architecture |
| url | https://arxiv.org/abs/2505.14358 |