Brian D. Davison and Vincenzo Liberatore. Pushing politely: Improving Web responsiveness one packet at a time (extended abstract). Performance Evaluation Review, 28(2):43--49, September 2000. Presented at the Performance and Architecture of Web Servers (PAWS) Workshop, June 2000.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....access before it gets modi ed is higher than a threshold. The primary performance metric in these studies is increase in hit rate. However, the right measures of performance are end to end latency when many clients are actively prefetching, and interference to other applications. Davison et. al [16] propose using a connectionless transport protocol and using low priority datagrams (the infrastructure for which is assumed) to reduce network interference. Servers speculatively push documents chunked into datagrams of equal size and (modi ed) clients use range requests as de ned in HTTP 1.1 ....

B. D. Davison and V. Liberatore. Pushing Politely: Improving Web Responsiveness One Packet at a Time (Extended Abstract). Performance Evaluation Review, 28(2):43-49, September 2000.

....access before it gets modi ed is higher than a threshold. The primary performance metric in these studies is increase in hit rate. However, the right measures of performance are end to end latency when many clients are actively prefetching, and interference to other applications. Davison et. al [17] propose using a connectionless transport protocol and using low priority datagrams (the infrastructure for which is assumed) to reduce network interference. Servers speculatively push documents chunked into datagrams of equal size and (modi ed) clients use range requests as de ned in HTTP 1.1 ....

B. D. Davison and V. Liberatore. Pushing politely: Improving Web responsiveness one packet at a time (extended abstract). Performance Evaluation Review, 28(2):43-49, Sept. 2000.

....Systems and E Commerce applications in which the quality of the offered services is first judged by the web site responsiveness. A lot of work has been done on studying various approaches to either reduce or hide network latency, in particular caching (e.g. 7] 4] and prefetching (e.g. 1] [3]) Caching involves storing frequently accessed or large, static documents closer to users. Proxycaches, for example, can quickly return requested documents This work is supported in part by National Science Foundation under grants IIS 9812532 and CCR 0098752. Permission to make digital or hard ....

B.D. Davison and V. Liberatore. Pushing Politely: Improving Web Responsiveness One Packet at a Time. In Proceedings of PAWS00, 2000.

....architecture of the UDiD system is described. In section 3, simulation details are presented and results are reported in section 4. Section 5 concludes the paper. Because of space limitations, many details as well as related work are omitted, and can be found instead in the longer version [7]. 2 System Architecture In this section we provide an overview of our proposed architecture. As mentioned in the introduction, our design decisions are guided by the principle of unobtrusiveness. The implementation specific details that we simulate are described in section 3. Here, however, we ....

....delays, and congestion avoidance for HTTP traffic. Consequently, reported performance values are an upper bound on actual TCP performance. Due to space limitation, trace characteristics and simulation parameters are summarized in table 1, and further details are postponed to the full paper [7]. Simulation is based on web server traces whose characteristics are reported in table 2. Performance Measures. The major performance measure is the average request latency. The latency is the time for a client to receive the requested document, and it includes the RTT s, the transmission time, ....

[Article contains additional citation context not shown here]

Brian D. Davison and Vincenzo Liberatore. Pushing politely: Improving web responsiveness one packet at a time. Technical Report DCS-TR-415, Department of Computer Science, Rutgers University, June 2000.

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Brian D. Davison and Vincenzo Liberatore. Pushing politely: Improving Web responsiveness one packet at a time (extended abstract). Performance Evaluation Review, 28(2):43--49, September 2000. Presented at the Performance and Architecture of Web Servers (PAWS) Workshop, June 2000.

No context found.

B. Davison and V. Liberatore, "Pushing politely: Improving web responsiveness one packet at a time," in Proceedings of PA WSO0, 2000.

....characterize each of the three and describe the datasets of each type that we will use. A summary of the datasets used can be found in Table 4.1. 62 Trace name Described Requests Clients Servers Time EPA HTTP [Bot95] 47748 2333 1 1 day Music Machines [PE98, PE00] 530873 46816 1 2 months SSDC [DL00] 187774 9532 1 8 months UCB 12days [Gri97, GB97] 5.95M 7726 41836 12 days UCB 20 clients Section 4.4.2 163677 20 3755 12 days UCB 20 servers Section 4.4.3 746711 6620 20 12 days Table 4.1: Traces used for prediction and their characteristics. 4.4.1 Proxy Typically sitting between a set of ....

....widely among dimensions of measurement metrics, implementation forms (from logic arguments, to event simulations, to full implementation) and workloads used. Even when restricting one s view to caching oriented simulators (e.g. those used in [WAS 96, CDF FCD 99, FJCL99, ZIRO99, BH00, DL00] it is apparent that there is a wide range of simulation detail. However, it has also been noted that some details are of particular importance [CDF 98] such as certain TCP slow start network e#ects and HTTP connection caching when trying to capture estimates of response times. Caching in ....

[Article contains additional citation context not shown here]

Brian D. Davison and Vincenzo Liberatore. Pushing politely: Improving Web responsiveness one packet at a time (Extended abstract). Performance Evaluation Review, 28(2):43--49, September 2000. Presented at the Performance and Architecture of Web Servers (PAWS) Workshop, June 2000.

....the detail needed to believably estimate retrieval latency. In contrast, NCS is specifically designed to estimate the latency experienced by the user, and so includes network simulation in addition to a caching implementation. Although inspired by the caching simulators described and used in [10, 9, 7], the development of NCS has proceeded independently. While this has necessitated significant redevelopment, it has had the side benefit of being an educational process for the author. An alternative might have been to use the network simulator ns [25] and extend it appropriately for prefetching. ....

B. D. Davison and V. Liberatore. Pushing Politely: Improving Web Responsiveness One Packet at a Time (Extended Abstract). Performance Evaluation Review, 28(2):43--49, Sept. 2000. Presented at the Performance and Architecture of Web Servers (PAWS) Workshop, June 2000.

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Brian D. Davison and Vincenzo Liberatore. Pushing Politely: Improving Web Responsiveness One Packet at a Time. In Proceedings of PAWS00, June 2000. http://citeseer.nj.nec.com/davison00pushing.html.

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B. D. Davison and V. Liberatore. Pushing politely: Improving Web responsiveness one packet at a time (extended abstract). Performance Evaluation Review, 28(2):43--49, Sep. 2000.

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