The art of tuning a website to deliver it's content quickly and efficiently to the user over a potentially low bandwidth connection.

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2
votes
3answers
56 views

Using one document for all images

I have some icons around 100x100. I typically save out each icon as a .png but I wanted to know if I included all the .pngs in one document would it be ideal and improve load time? If one document ...
2
votes
3answers
84 views

Async load of secondary content; Google says “slow”, users see what they want faster

We have a performance problem on our site, and we're digging in to correct some rather basic issues -- we know we have many opportunities to improve performance -- this question is about one, in ...
3
votes
2answers
895 views

What are reasons of latency for a HTTP request to load HTML?

I would like to know what are reasons of latency for a HTTP request to load HTML part of a webpage. I think about: loading webpage with proxy not having a good web server (apache vs nginx) having a ...
2
votes
1answer
96 views

Why is there a huge gap before in my WebPageTest after the HTML has been downloaded?

I am trying to improve front-end performance of my website, and there is a 3.5 second lag before the user actually sees anything, and I'd like to improve this. Here is a screenshot: And here is the ...
2
votes
1answer
85 views

Server comparisons - Comparing servers based on their specs

We are busy creating a server hierarchy manager (possibly not the greatest name). What this is intended to do is determine which of our servers is the best for doing work. We have identified the ...
3
votes
1answer
2k views

JMeter: how to asign a single distinct value from CSV Data Set Config to each thread in thread group?

I have to make a load test for a relatively large number of users so I cant really use User Parameters pre-processor to parametrize each thread with custom user data. I've read that I should use CSV ...
2
votes
1answer
82 views

Need a study about average latency due to HTTP request and server processing time when downloading images that are a part of DOM

I'm writing a thesis about css sprites and need to know the of the average HTTP request overhead when establishing a connection to download an image file that is a part of DOM. We conducted a study ...
15
votes
4answers
2k views

Why is loading speed of a website important for SEO?

I see everywhere on the internet how to optimize loading speed of a website but no one says why it's important for SEO. Inevitably, there are reasons why Google has decided to take this factor into ...
3
votes
5answers
675 views

How to test the speed of a page that is guarded behind login page?

For public page, I can use pingdom.com to calculate the response time/uptime of a page over a certain period of time. However, pingdom cannot time the response time of a webpage guarded behind a ...
5
votes
1answer
154 views

Connection speed for a website from UK to Australia

I need to open a website only for Australian customers. The fact is that our provider's servers are all housed in the UK. What do you suggest is better? Leaving our website in the UK? Or buy a ...
0
votes
1answer
67 views

Effects of Active Virus Scanner on WebApp for XS Azure VM

Suppose a public WebApp is hosted on an EXtra Small (XS) Azure Virtual Machine (VM). What benefits and/or performance problems might visitors experience if a Memory-Resident Virus Scanner is run on ...
2
votes
1answer
237 views

Internal CDN and setting up subdomain to increase maximum parallel connections

I've heard that browsers can have around maximum of 6 parallel connections per domain at a time. So I decided to have another subdomain "cdn." then use mod_rewrite to point to media folder then ...
2
votes
1answer
85 views

CDN for site with target market in Australia

I was told that http://www.edgecast.com/ is very good CDN provider for Australian market. I have a cloud server based in Sydney Australia but was wondering whether it's even worth getting cdn as my ...
2
votes
1answer
59 views

Slower site with the *same* configuration than a mirror copy…?

I've got this Drupal site (ligadelconsorcista.org) that I have to move it from one server to another. The reason was that my older host even when it was pretty decent, it started a couple of months ...
1
vote
0answers
16 views

Impartial comparisons on cloud / shared-hosting speeds with different providers [closed]

Are there any impartial comparisons on speeds of cloud hosting or shared hosting from different providers? I've googled and found a few snippets of info, but not sure that they're impartial ...
1
vote
1answer
2k views

How to specify expiration of cacheable resources?

I'm trying to speed up a wordpress site -- this site: http://richardclunan.net I'm following the observations here: http://gtmetrix.com/reports/richardclunan.net/9ps7Zc0j The first item says: "The ...
2
votes
2answers
873 views

What is the default behavior of Cache-Control

If no private nor public were defined in the cache-control, e.g. Cache-Control: max-age=31461276 What is the expected behavior?
1
vote
2answers
206 views

Benchmark for website speed optimization

I working on website speed optimization. I mostly used 3 tools for analyzing speed of optimization. Speed analyzing Tools: Google pagespeed tool Yslow Firefox extenstion Web Page Performance Test ...
5
votes
4answers
329 views

Strategies for very fast delivery of webpages

I run a website Cucumbertown with an initial pay load of nearly 9KB zipped. All my js is delayed loaded with requirejs and modernizer is the only exception. Now all my webpages are Nginx cached ...
2
votes
4answers
1k views

Using Amazon S3 has increased the page load time? Why?

I am optimising the page load time for my site. After a bunch of changes, the load time had decreased. As suggested by a lot of people, I decided to use Amazon's S3 to store and serve my static ...
2
votes
4answers
723 views

Google bots are severely affecting site performance

I have an aggregate site on a linux server that pulls in feeds from a universe of about 2,000 blogs. It's in Wordpress 3.4.2 and I have a cron job that is staggered to run five times an hour on ...
3
votes
2answers
214 views

Shared to Dedicated or Amazon CloudFront to improve performances and keep secured?

I have a Wordpress which currently takes about 1.8s to 2.5s for the home page to completely load in my country. The page weight is about 700Ko (static content included). In order to increase ...
3
votes
2answers
2k views

How to find out if my hosting's speed is good enough?

There are lots of different online performance tests: Google PageSpeed Insights iWebTool Speed Test AlertFox Page Load Time WebPageTest Also there are several desktop/client software such as: ...
0
votes
0answers
63 views

Logging what was in the content of a page

I'm one of the people working on a Java based website that has the apache httpd in front of it. The content on the pages is migrating towards personalizing the content and as such just about every ...
0
votes
3answers
97 views

images based website speed

I have a wordpress site which 90% is based on images. I've installed Wp-Super-Cache, now it seems to load a little bit faster. I've made a speed test on Pingdom Tools: Page size 4.7MB Load time ...
3
votes
2answers
259 views

How is fluid theme's impact on rendering performance?

I am new to responsive design and now re-making a template to make it more responsive. This involves redefining many fixed width and fonts as context-dependent percentage (% or em) instead of pixels ...
1
vote
2answers
1k views

Looking for WAMP/LAMP/MAMP Benchmarking

I'm running ZWAMP WAMP stack on my local development machine. However I have found it to be very slow at serving pages from a Drupal site I have setup. By contrast, my live production site on shared ...
2
votes
1answer
42 views

Do private collaboration platform really need private file access? [closed]

I need to make private collaboration platform, where the website is not open to public registration, and all the posts is only accessible by the members. The members is management team of a company. ...
14
votes
1answer
4k views

What is recommended minimum object size for gzip performance benefits?

I'm working on improving page speed display times, and one of the methods is to gzip content from the webserver. Google recommends: Note that gzipping is only beneficial for larger resources. Due ...
1
vote
1answer
170 views

Do or can robots cause considerable performance issues?

At work we are in a discussion with team members who seem to think bots will cause us problems relating to performance when running on our services website. Our setup: Lets say I have site ...
1
vote
2answers
397 views

wordpress sites are slow on shared hosting but plain html/css sites are fast

I've got a shared hosting account, unlimited sites, unlimited GB, unlimited bandwidth etc etc. Of course because it's shared and a cheap one at that - there's too many sites on each server and it ...
4
votes
1answer
312 views

jQuery/AJAX on old Computers/Browsers

I am working on a plattform that will have a lot of users in the so called "developing countries". So many of them will be using old computers and old browsers in tiny internet cafes. We want to make ...
0
votes
1answer
675 views

Parallel downloading of JavaScript files on page load

Below is a quote from one of the Yahoo performance pages: While a script is downloading, however, the browser won't start any other downloads, even on different hostnames. When I look at page ...
1
vote
1answer
747 views

HTML compressor/minifier

Currently I am using a system where HTML gets cached server-side before it's sent to the browser. I'm looking to compress the HTML source of my website before it is cached. Basically I'm looking for ...
0
votes
2answers
277 views

Hosting a small e-commerce website from home. Recomended? [duplicate]

Possible Duplicate: How to find web hosting that meets my requirements? I live in the UK and I current use JustHost to host several domains. I think they are very reasonable but recently ...
0
votes
1answer
568 views

check server speed / response time

I was reeled in by cheap, unlimited hosting. (Well, kind of cheap apart from having to buy a year upfront.) The moral of the story is it's awful. I'm trying to find a reason for them to let me leave ...
3
votes
3answers
3k views

Where to store large amounts of images for my site?

If i would want to deploy a site, like ebay, where people will be able to sell something, i would need to store large amounts of images, like many thausends of them and i would need to display about ...
4
votes
3answers
416 views

Webmaster tools site performance - reliable measurements

I am measuring a few sites and use both webmaster tools and analytics to track various aspects. One of the aspects I try to measure and track is performance. I am getting a much more reliable ...
0
votes
3answers
117 views

Have SQL reports on separate database than same database that is serving web app?

We use SQL reports in a .NET web application, but some of our reports are heavy and involve more table join and columns. As you know we cannot index all the involved columns (performance problem). ...
2
votes
2answers
603 views

Can I host a high traffic website at home?

I've been searching this up on google but I can't formulate my google search with the right terms to find an accurate answer to my question. Is it possible to have a super-fast connection at home to ...
3
votes
3answers
504 views

How to limit the FTP bandwidth for one user?

I have no experience in webmastering, so sorry if it is a simple question! I have a VPS and about 30GB files on it and I am trying to download them to my PC. So for transfering them I made an FTP. ...
5
votes
1answer
198 views

What percent of visitors should click on the next page before you enable prefetching?

Mozilla Firefox and Google Chrome support prefetching via an HTML tag: <!-- in chrome --> <link rel="prerender" href="http://example.org/index.html"> I suppose it is always worthwhile ...
2
votes
3answers
312 views

Measure server performance

I'm using a shared hosting for my website. How to find out if the performance of the server changes? I'm asking because my hosting company told me that some other site on the server is slowing down ...
0
votes
1answer
628 views

Long time to first byte for static content

I have large time to first byte for static content on IIS 7.5, it's not site specific it's slow for all sites on that server. Web.config setting runAllManagedModulesForAllRequests is set to false, and ...
0
votes
1answer
93 views

Website performance tips?

I'm kind of having some troubles with the loading of my website. It sometimes loads fast, then when you refresh it, most of the time, it will just keep trying to load images. It will keep doing that ...
6
votes
1answer
155 views

window.performance (Navigation Timing) - how to get this reported in “analytics way”

I have recently learned about window.performance that seems a great way to measure webapp performance using real client traffic. Is there any analytics service that is built on top of this and allows ...
1
vote
1answer
296 views

Does just-ping determine a website's accessibility and/or speed?

While looking for a webhost I wanted one that had good connectivity around the world, and ran their (shared hosting) test IPs on just-ping.com. This is a part of a sample result: München, Germany: ...
2
votes
2answers
2k views

why is my site slower with amazons cdn?

so I have move most of the static objects to amazons Cloudfront CDN example: http://images.storyfollower.com/images/cycleOfStories.jpg which through cname point to the cdn Now I just ran a speed ...
1
vote
0answers
34 views

SEO/performance - building blog article page [duplicate]

Possible Duplicate: What are the best ways to increase your site's position in Google? I've been using WP up and until now, but want to spread my wings and build a bespoke blog for my ...
10
votes
4answers
4k views

How can I measure website page load times from different countries?

Recently, I migrated one of my personal projects into cloud and hosted the app on UK based servers. I reside in Turkey and I would like to see how long it takes for my pages to load for UK based ...