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...
We have a client and a server. I want to measure the response-time of the network between them. When I send a request to server it should immediate respond to my request, it should be like a ping request so that there will be no processing time at the server. How can I do this in Java? ...
I'm looking for an AJAXian widget that shows the time between client browser and server. Any ideas? ...
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 alg...
Hi. I have some basic questions around understanding fundamentals of Performance testing. I know that under various circumstances we might want to do - Stress Testing - Endurance Testing etc. But my main objective here is to ensure that response time is decent from application under a set of load which is towards a higher end or in leas...
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 res...
I seem to be having a hard time getting the Apache module for Hyperic to compile in Ubuntu 8.10. Has anyone had any luck getting it to work? Does anyone have a precompiled version? I am running Hyperic HQ version 4.1.2 build #1053, Apache 2.2.x ...
Hi guys I'm using microtime() function of php to tell how long certain snippets of code take to run I do this by taking the time before and after the snippet and subtracting them using microtime function. I got the following results though for the different snippets: 1 - 0.022976 2 - 0.003656 3 - -0.196361 4- 0.006563 5- 7.2E...
According to this discussion of Google App Engine on Hacker News, A DB (read) request takes over 100ms on the datastore. That's insane and unusable for about 90% of applications. How do you determine what is an acceptable response time for a DB read request? I have been using App Engine without noticing any issues with DB res...
I have created two very simple heroku apps to test out the service, but it's often taking several seconds to load the page when I first visit them: Cropify - Basic Sinatra App (on github) Textile2HTML - Even more basic Sinatra App (on github) All I did was create a simple sinatra app and deploy it. I haven't done anything to mess wi...
I am testing out Google App Engine as a free Content Delivery Network and it feels like it's taking a long time to serve up my content. I read somewhere that GAE gzips all of your content by default, that's the primary reason I'd like to give it a shot. Why does this gae page take a say a half a second to download, while your typical s...
Hi I wrote a code to simulate Round Robin algorithm. How should I calculate Response Time and Throughput? Thanks ...
Hi I have an asp.net view/page (dynamic) that is built up of nested Html.RenderPartials. The view is sent an appropriate viewmodel to render. Firebug says the GET response for the HTML is 9.89 secs for 9.5KB. To compare the FAQ page (static html) of the same site is 1.3 secs for 17K. At first I thought it was the SQL Entity back en...