Latency (engineering)

About: Latency (engineering) is a research topic. Over the lifetime, 7278 publications have been published within this topic receiving 115409 citations. The topic is also known as: lag.

Can you GET me now?: estimating the time-to-first-byte of HTTP transactions with passive measurements

Abstract: Cellular network operators have a compelling interest to monitor HTTP transaction latency because it is an important component of the user experience. Existing techniques to monitor latency require active probing or use passive analysis to estimate round trip time (RTT). Unfortunately, it is impractical to use active probing to monitor entire cellular networks, and RTT is only one component of HTTP latency in cellular networks. This paper presents a new passive technique to estimate HTTP transaction latency that overcomes the scaling and completeness limitations of prior approaches. We validate our technique in an operational cellular network and present results for traffic in the wild.

Reducing Latency via Redundant Requests

Abstract: Recent computer systems research has proposed using redundant requests to reduce latency. The idea is to run a request on multiple servers and wait for the first completion (discarding all remainin...

Humor appreciation and latency of comprehension

Abstract: Abstract The relation between humor appreciation and comprehension difficulty has been described as an inverted U function. That is, when a joke is too easy or too hard to understand it will be less funny than a joke of intermediate difficulty. Humor appreciation might, however, be a kind of expert skill. Then the easier it is to get a joke for the experienced language user the funnier the joke will be. Two experiments found the relation between the latency of recognizing a message as a joke and the funniness of that joke to be primarily negative and linear. There was no evidence of an inverted U with this material. Funnier material was reacted to more quickly than less funny material providing some evidence for the expert skill hypothesis. Some jokes congruent with male gender stereotypes, however, resulted in higher humor ratings by females but did not affect recognition latency. This finding suggests the possibility of an implicit structural and a more explicit content factor in humor appreciation.

Can Wi-Fi 7 Support Real-Time Applications? On the Impact of Multi Link Aggregation on Latency

Abstract: Multi Link Aggregation (MLA) is a feature likely to be introduced in Wi-Fi 7, the next-generation of Wi-Fi, which will be based on the IEEE 802.11be specifications. MLA will allow Wi-Fi devices that support multiple bands (such as the 2.4 GHz, 5 GHz, and 6 GHz bands) to operate on them simultaneously. The resulting throughput and latency gains are likely to bring Wi-Fi one step closer to supporting emerging real-time applications like augmented and virtual reality. While throughput gains resulting from the use of MLA are mostly linear, the latency gains exhibit interesting characteristics and are the subject of this paper. We use our in-house simulator to study the latency enhancements resulting from MLA and seek to answer whether Wi-Fi 7 devices can meet the challenging latency requirements demanded by most real-time applications. In this pursuit, we observe that allowing Wi-Fi devices to contend on even a single additional link without changing any physical layer parameters can lead to an order of magnitude improvement in the worst-case latency in many scenarios. In addition, we highlight that even in dense conditions, MLA can help Wi-Fi devices meet the challenging latency requirements of most real-time applications.