response-time | 易学教程

Average Inter-Keypress time when typing

阅读更多关于 Average Inter-Keypress time when typing

问题 I have tried to google for answers to this, but perhaps there isn't widely available research or perhaps I'm not using the right terms. Basically, I would like to have some idea as to the average time it takes between key presses when typing. The reason I want to know this is I'm working on a fuzzy search that would be used in a drop down. There are some things we can do to improve accuracy in our results but they would result in slower speed. However, if such a speed would still be below a

AJAX/JQuery response time performance widget [duplicate]

阅读更多关于 AJAX/JQuery response time performance widget [duplicate]

问题 This question already has answers here : Find out how long an Ajax request took to complete (8 answers) Closed 5 years ago . I'm looking for an AJAXian widget that shows the time between client browser and server. Any ideas? 回答1: Firebug for firefox show this. 来源： https://stackoverflow.com/questions/1188195/ajax-jquery-response-time-performance-widget

JMeter response time vs threads graph - data point

阅读更多关于 JMeter response time vs threads graph - data point

问题 What data point this graph is using? Is the graph representing TTFB (time to first byte) or TTLB (time to last byte) Here are the settings: 回答1: Graph is representing TTLB (time to last byte) because it uses JMeter's Response time If you want TTFB (time to first byte), you need to use Latency JMeter measures the latency from just before sending the request to just after the first response has been received. Thus the time includes all the processing needed to assemble the request as well as

LONG POLLING (in php) starts hanging after 5 requests to database

阅读更多关于 LONG POLLING (in php) starts hanging after 5 requests to database

问题 I'm developing live auction site, with real-time bidding system. I'm using LONG POLLING when user bids on item. I've chose long polling because WebSockets are not yet very supported and NODEJS is to complicated for me to implement right now. So I'm stuck with this simle ajax long polling, which works great for about five bids. So the problem is: Bidding works great for 5-6 item bids in 1 second intervals (I get instant response from server-ajax), but the 7th (click) on bid button this

Performance effect of enabling apache response time log directive

阅读更多关于 Performance effect of enabling apache response time log directive

问题 What affect will enabling the response time (%D) LogFormat directive have on apache performance? The response time is the time taken to serve a request in microseconds. Response time can be enabled like so: #LogFormat "%h %l %u %t \"%r\" %>s %b" # Default LogFormat LogFormat "%h %l %u %t \"%r\" %>s %b %D" # LogFormat including response time I have written a tool for monitoring and analysing backend script performance, apache-response-time, which requires response time data. I would like to

web server running inside a docker container running inside an EC2 instance responses very slowly

阅读更多关于 web server running inside a docker container running inside an EC2 instance responses very slowly

I have a web server running inside a docker container in AWS EC2 Ubuntu instance. When I send requests to the web server, I get the response very slowly (20+ seconds most of the times, although the response time varies). It does not time-out though . The web server is a very lightweight. It is only to test, so almost does not do anything. docker version 17.03.0-ce docker-compose version 1.12.0-rc1 How I debugged so far When sending requests to the web server running in the docker container from within the EC2 instance (url = ' http:// localhost:xxxx/api ') it is still very slow. So should not

Performance effect of enabling apache response time log directive

阅读更多关于 Performance effect of enabling apache response time log directive

What affect will enabling the response time (%D) LogFormat directive have on apache performance? The response time is the time taken to serve a request in microseconds. Response time can be enabled like so: #LogFormat "%h %l %u %t \"%r\" %>s %b" # Default LogFormat LogFormat "%h %l %u %t \"%r\" %>s %b %D" # LogFormat including response time I have written a tool for monitoring and analysing backend script performance, apache-response-time , which requires response time data. I would like to warn potential users how enabling this directive will affect apache server performance. Probably not

Slow response-time cheat sheet

阅读更多关于 Slow response-time cheat sheet

Does anyone have links to current and historical papers and authoritative links (statistics and blog posts) regarding response-time for user interfaces? Naturally the authoritative link is Human factors design criteria in man-computer interaction Some key quotes include: [Regarding] response to request for next page. […] Delays of longer than 1 second will seem intrusive on the continuity of thought. And Assume an inquiry of any kind has been made. The user – and his attention – is captive to the terminal until he receives a response. If he is a busy man, captivity of more than 15 seconds,

Percentiles of Live Data Capture

阅读更多关于 Percentiles of Live Data Capture

I am looking for an algorithm that determines percentiles for live data capture. For example, consider the development of a server application. The server might have response times as follows: 17 ms 33 ms 52 ms 60 ms 55 ms etc. It is useful to report the 90th percentile response time, 80th percentile response time, etc. The naive algorithm is to insert each response time into a list. When statistics are requested, sort the list and get the values at the proper positions. Memory usages scales linearly with the number of requests. Is there an algorithm that yields "approximate" percentile

What is the shortest perceivable application response delay?

阅读更多关于 What is the shortest perceivable application response delay?

A delay will always occur between a user action and an application response. It is well known that the lower the response delay, the greater the feeling of the application responding instantaneously. It is also commonly known that a delay of up to 100ms is generally not perceivable. But what about a delay of 110ms? What is the shortest application response delay that can be perceived? I'm interested in any solid evidence, general thoughts and opinions. What I remember learning was that any latency of more than 1/10th of a second (100ms) for the appearance of letters after typing them begins to