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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5
votes
1answer
152 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 ...
5
votes
1answer
197 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 ...
5
votes
1answer
80 views

What is “blocking time” in Chrome browser?

According to the answer of http://stackoverflow.com/questions/15597936/blocking-time-in-google-chrome: "Blocking" is the time the request spent waiting for an already established connection to ...
4
votes
5answers
636 views

Do user names used for login need to be unique?

Assuming a non-commercial site where users login with a user name and pw, do I need to enforce unicity of usernames? Note: The db will use a separate unique index to identify the users. The site is ...
4
votes
2answers
173 views

Page speed affecting ranking in practice

Articles like this one discuss Google possibly taking speed into account for ranking factors. Are there any other search engines which already take speed into account for search results? or perhaps ...
4
votes
2answers
622 views

CDN for authenticated sites

We have a site that requires users to sign into. Typical stuff. Today, all the content (dynamic and static) is behind the login process, and you cannot access any of the pages or files via a URL ...
4
votes
2answers
219 views

Adding Google +1 Button Slows Page Load Time

This article says Google +1 tags can add a second to page load time, which means a 10% decline in visitors. The article authors say they use smart tag loading to reduce page load time. Does anyone ...
4
votes
2answers
201 views

Google Webmaster Tools - Why site performance graph goes up and down, even if the site has never changed?

This is my site 7 months graph from Google Webmaster Tools site performance util. As you can see the graph goes up and down, with big differences: less than 1 second up to 5 sec. Since I never ...
4
votes
2answers
507 views

Actual page load time vs. perceived one

You know how all around the web, people are pushing for smaller and smaller page load times ? They do so with good reason, especially with Google now factoring it in in their way to rank pages. It's ...
4
votes
1answer
93 views

Can I easily track site performance over time with Google PageSpeed?

Are there any implementations of the Google PageSpeed API that allow one to track the performance of a site over time?
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 ...
4
votes
2answers
3k views

How does server connection speed affect website performance?

A web host I'm considering quotes their server connection speed for their basic package as '15Mb/s burstable.' They offer an upgrade to a more expensive package with a '35Mb/s burstable' speed. I ...
4
votes
1answer
310 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 ...
4
votes
1answer
525 views

How to show content for logged-in vs logged-out users?

We have a set of pages with the following urls: www.mysite.com/info/page1.html www.mysite.com/info/page2.html www.mysite.com/info/page3.html Each has a structure as follows: ---------------------- ...
3
votes
9answers
257 views

How do you enhance your websites speed without compromising the design and access?

How do you enhance your websites load speed without killing the design and accessibility? File compression, CDN, Gzip? What are the best tools for doing so? For example, Google has optimized their ...
3
votes
4answers
267 views

WordPress MySQL Performance

I have a website (www.americanbankingnews.com) that gets 40,000-50,000 page views today. It's currently sitting on a dedicated quad-core Xeon server with 8GB of ram. The site is powered by WordPress ...
3
votes
2answers
841 views

Is it good to refresh a page after a fixed interval?

I seen many sites which are refreshing their pages after a fixed interval. Sometimes it is 1-2 mins only. If i refresh a page after every 5 mins. It'll helpful to notify user with updated contents. ...
3
votes
1answer
174 views

What if one certain page is much slower than the rest of your website?

I have a very fast website, but there is one overview page that queries a lot and takes 16 to 17 seconds to load. Will this have an impact on my SEO?
3
votes
2answers
845 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 ...
3
votes
3answers
499 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. ...
3
votes
3answers
136 views

Google webmaster tools Site Performance says site is faster but shows it slow in the graph

Looking into Google webmaster tools it happened to me many times to see for some of my sites these type of inconsistency, in the text they say my site is faster than 63% of sites, but when I look at ...
3
votes
4answers
983 views

How to replay traffic to web server from logs to profile / benchmark web app under real load?

Is there a way to get recorder real network traffic to web server, e.g. from web server logs (Apache), and replay this traffic to either profile web application (in Perl) under real load, or benchmark ...
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: ...
3
votes
2answers
6k views

Slow website response? How can I fix this issue?

I have pingdom monitor on my website: http://stats.pingdom.com/t68xhgex256f/375513 For North America (big target market) the response time is 1-2 seconds. This is far too slow. Is there anything ...
3
votes
2answers
790 views

One JS/CSS bundle Vs. One with default and one with custom

On a few of my sites, we use Javascript/CSS bundles to reduce load time. I've always used two bundles for each type (4 in total) so I have JS Bundle 1: Contains scripts that are standard on every ...
3
votes
2answers
212 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
249 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 ...
3
votes
1answer
726 views

SEO for images: can I use a different (cookieless) domain?

We want to increase the value of some of our important images by means of SEO, and we want to start serving them from a different, i.e. cookieless, domain. We want to go from ...
3
votes
3answers
1k views

Track page size of web app for performance

I'm about to start trialling optimisations on my web application (apache & tomcat). My main interest right now is: The total page size (including external js files such as jquery) The number of ...
3
votes
4answers
651 views

Long 'Wait' Time for three php/CSS files. Is something blocking them?

I have been speed optimizing a Wordpress site to little effect. There are three files CSS-related php files from the Wordpress theme that are delaying page loads on the site. One of the three files ...
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 ...
3
votes
5answers
615 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 ...
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 ...
3
votes
2answers
166 views

What is the easiest and fastest way to get statistics of a webservice response time?

I implemented a webservice with node.js and want to test its response time. I don't just want to do the test with one connection attempt, but I want statistics about multiple attempts, telling me the ...
3
votes
1answer
25 views

What are the effects on loading times when conditionally loading and concatenating scripts?

Suppose you have a script in your theme that you always need on every page - say 'animate-menu.js' (10KB) - and you have one that you only need on one specific page - say 'validate-contactform.js' ...
3
votes
1answer
78 views

What's the minimum age for a Cache-Control header with Akamai?

We're planning an integration with a CDN (likely Akamai) and are trying to determine how low we could go for a max-age value. For a site that could get a few hundred thousand folks hitting the site ...
3
votes
2answers
96 views

Can using Varnish still help to improve the performance of my site if I already use CloudFlare?

I'm using CloudFlare right now. Can Varnish still help to improve the performance of my site?
3
votes
1answer
173 views

Why SPDY-enabled pages are not loading faster?

I've just enabled the SPDY module on nginx, as explanained on the SPDY module site. I expected a speed enhacement on my site, but I haven't noticed it. Using Firefox 25 and Firebug, I tried to take a ...
3
votes
1answer
889 views

What sense can be made out of TIME_WAIT, CLOSE_WAIT, ESTABLISHED

Using netstat command, I got the number of couple of TCP states of connections. But for running websites, how to make meaningful connections between these numbers and the bottleneck/performance of ...
3
votes
1answer
59 views

Statistics about development of average connection speed and latency over the years

Are there any statistics about the development of average internet connection speed and request latency from households to major sites over the years? I find this information very useful for ajax ...
3
votes
2answers
523 views

KPI's for Webmasters

Do you know any Key Performance Indicators for Webmasters? What should be measured and monitored?
3
votes
0answers
225 views

How to test high load on a website? [duplicate]

Possible Duplicate: How do you load test your application? Hi, I am nearing a point of finalizing a website and it will soon be released. We have bought some traffic and advertisement ...
2
votes
6answers
99 views

Regarding improving site performance

I have an e-commerce website and have close to 9000 products in it with each product having 3 pictures at least. Now my site is loading at an average speed but I want to improve it, as I will be ...
2
votes
4answers
700 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 ...
2
votes
4answers
1k views

Webpage Post Submits vs AJAX?

Which is better and why? I can see where a site that works 100% in AJAX might optimize a bit better, due to not having to reload the page on each click. But I am a huge fan of the big submit button ...
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
3answers
381 views

Website has “lagging” effect. Causes? Tips and tricks to fix?

So I have this site here which has major performance issues. Scrolling is very slow, hover effects have a bit of lag and other similar issue. Unfortunately right now I am working off a cheap host so I ...
2
votes
3answers
174 views

How to decrease the frequency of Google/Search-engine bots crawling my site?

My server handles my visitors ok, but recently I found there are many search engine bots crawling my site and my server gets quite busy serving these bots. My site generates over 1000 posts each day, ...
2
votes
2answers
595 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 ...
2
votes
2answers
824 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?