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
57 views

Improve web site performance via parallel CSS downloads?

I was optimizing the page load time of a website. One of the ways was by combining multiple HTTP requests for CSS into one combined HTTP request. But one of the reviewers asked an interesting ...
0
votes
0answers
10 views

Suggestions for Performance improvement based on Result differences [on hold]

We have a Joomla site (http://guru99.com) running over dedicated server. Currently, Rockettheme's gantry based template is installed on the site. So, to optimize my site's performance I have tested ...
0
votes
3answers
59 views

InstantClick effect on SEO?

InstantClick.io is a pretty awesome JS library that makes a website feel a lot faster (in most cases) by prefetching links when a user is hovering above them. This will cut off at least about 100ms ...
1
vote
1answer
55 views

Why requests/Sec is very low in jmeter benchmarking while website serves so many users?

I've created a Thread Group to test my server load. In the following picture you can see that throughput is about 27 per min. The site is a high traffic website. Is jmeter precise on showing this ...
1
vote
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 ...
6
votes
3answers
188 views

What's causing the 'wait' time before my HTML loads?

I have a website the seems to load very slowly. When I run a speed test on it I see there seems to be a 6 secound gap before the HTML loads. Images and JS scripts load very fast after that point. You ...
50
votes
8answers
21k views

How can I simulate a slow connection for page load?

I have a fast server, and a reasonably fast home Internet connection. How can I simulate my page loading on a slow connection?
5
votes
3answers
239 views

Specifying image dimensions to improve browser performance

I recently ran an audit on my web site using Google Developer Tools. My images are all the same size (500 horizontal by 300 vertical pixels) so I thought it would be better if I left out the image ...
3
votes
1answer
53 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 ...
1
vote
0answers
421 views

How do I fix “high response time” warnings from Google Webmaster Tools?

In my Google Webmaster Tools account, there is warnings about my site: Some URLs listed in this sitemap have a high response time. This may indicate a problem with your server or with the content ...
2
votes
1answer
33 views

Performance hit of a lot of unused font-faces

If you have an html file, and in that html file you link to styles.css which covers all the styling of the page. Then inside of styles.css you have something like @import url('../css/fonts.css'). ...
2
votes
1answer
37 views

Is there any way to simulate a slow connection between my server and an iPad (without installing anything on the server)?

Some of our webapp users have difficulty on slower connections. I"m trying to get a better idea of what that "speed barrier is" so I'd like to be able to test a variety of connection speeds. I've ...
2
votes
2answers
264 views

How can I speed up the download time of a Bootstrap theme'd website?

I realize some of the ways are: Use the minified versions of all the .css and .js Load the common library elements (jQuery, etc.) from some common source. Not sure what the source that's most likely ...
1
vote
1answer
29 views

Why does bingbot access my sites the most even if I set crawl rate to the minmum?

Recently my sites got overloaded and it turned out bingbot was the culprit. I set the crawl rate for the minimum for my sites in bing webmaster tools, but regardless bingbot has the most access (about ...
0
votes
1answer
50 views

Determining cause of random latency and loading issues

I'm not sure exactly what details to post in regards to my issue, because I'm not sure what is relevant. Prior to the end of September my websites all loaded quickly, in almost all cases. Loading ...
2
votes
6answers
96 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 ...
0
votes
0answers
8 views

Using directories vs http get? [duplicate]

Which of the following is better and why please? Which is better for SEO? http://stackoverflow.com/questions/ask http://stackoverflow.com/index.php?p=questions&a=ask
1
vote
2answers
46 views

How do I pick a host with the fastest access to a third party API?

I'm developing an application that relies on an API that is very time-sensitive. Every millisecond advantage I have over my competitors the better. Is there a good way to determine the optimal ...
0
votes
2answers
46 views

Dynamically load CSS

I'm using LESS for creating CSS and I'm considering using something like grunt-render on the server side in order to only load the CSS / JS that is needed for that page. My goal is to reduce overhead ...
1
vote
2answers
320 views

Google Pagespeed not recognizing minify, cache leveraging, etc

Recently, my sites score completely dropped in site optimization/speed in the Google Adsense rating system. When using Google PageSpeed Insights it tells me quite a few things. One being to leverage ...
1
vote
1answer
36 views

What kind of increase can I expect from improving site speed

I have a pretty slow site. This is what WMT measured: Now I know speed is a factor in SEO, but considering it is very difficult to make the site faster, I'm trying to evaluate the ROI of this effort. ...
3
votes
5answers
522 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 ...
0
votes
1answer
36 views

SEO / Perfomance domain matters

If I register a domain by some domain registrar and than host in on some hosting provider, does the SEO or performance matter? E.g. I register the domain in UK and then host in Dallas, are there any ...
3
votes
2answers
58 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?
0
votes
1answer
54 views

Declaring variables using single or multiple var statements. Performance wise [closed]

Someone once told me that it's better for Javascript performance to use one var statement rather then multiple. I.e. // Version A. Allegedly Faster var a = 1, b = 2, c = 3; // Version B. ...
2
votes
1answer
260 views

Can I set Cache-Control in the .htaccess file for a specific part of a document (just a section of the <body>)

I noticed, by using Google Page Speed Insights, that if I structure my HTML to load the critical, above-the-fold content first, my page will improve performance - and it woks (with now current perf. ...
18
votes
3answers
1k views

If a page takes too long to load, after how long will a user give up and re-load or go elsewhere?

If a page takes too long to load, after how long – generally – will a user give up and re-load or go elsewhere? What studies have been done that measured page load time and user ...
0
votes
1answer
46 views

Is my website is too slow? [closed]

I checked the speed of my website with http://tools.pingdom.com/ . Results: Per. Grade = 85/100 Req.s = 18 Load Time = 1.94s Page Size= 96kb Is this result is good for my website(also consider ...
1
vote
1answer
292 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: ...
23
votes
1answer
3k views

How exactly is Google Webmaster Tools measuring “Site Performance”?

I've been working for two months now on improving our response time (mainly server side) on a new forum (a brand new product on a technical point of view) we've launched in Germany a few month ago and ...
6
votes
5answers
6k views

GZipped Images - Is It Worth?

Most image formats are already compressed. But in fact, if I take an image and compress it [gzipping it], and then I compare the compressed one to the uncompressed one, there is a difference in size, ...
10
votes
4answers
3k 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 ...
0
votes
3answers
221 views

Raw coding vs Joomla / Drupal

Currently my sites pages load in about 500ms. The HTML, CSS, JavaScript, PHP, Python, Perl, and SQL queries are totally not optimised. If I recreate the site using Joomla, will my site slow down?
0
votes
1answer
439 views

Can I defer loading Modernizr?

I'm using an HTML5 template that makes thorough use of the semantic tags and includes Modernizr up top to do the necessary IE coaxing. Google PageSpeed is complaining about the blocking JavaScript and ...
0
votes
0answers
16 views

How to measure the file download speed in another country [duplicate]

Now I have a dir with about 5000 files (images) in it and I concerned if this amount will significantly slowdown speed of page load with this images. I'd like to test the load speed of an image from ...
2
votes
3answers
141 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, ...
8
votes
1answer
594 views

Is gzip compression available for GitHub pages?

I'm using GitHub pages to host my site. While checking Google PageSpeed Insights, it recommends that I enable gzip compression. Since I have a static site hosted on GitHub, I'm not sure that is ...
3
votes
3answers
510 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
158 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 ...
0
votes
1answer
61 views

How to log the ASP pages requested during a particular time span?

I have a web application build in ASP and is hosted on IIS7 windows server 2008. Each day CPU level increases and the application stops responding (ASP pages don't load for ever, however an HTML page ...
25
votes
3answers
2k views

Should I use gzip for compressing my HTML?

I saw from an online tester that my HTML can be compressed about 90%! Is it good practice to use gzip or not? I see that lot sites don't use it. For me it would improve traffic, as some pages ...
1
vote
1answer
152 views

Using a CDN for CMS software (multiple sites)

I'm currently researching ideas for the media management side of a CMS I'm writing. I was looking at having images served from a CDN which is fine on a single site, but I want all sites that run the ...
0
votes
0answers
9 views

Configuration suggestions for a server hosting a general purpose website [duplicate]

I hope I am asking this question on correct stackexchange website. Actually I have a general purpose ASP.NET website like stackexchange.com QnA sites. It is a new website, and I don't know what amount ...
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 ...
0
votes
1answer
537 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 ...
2
votes
3answers
145 views

Slow site because of WordPress Evolve theme

I've installed WordPress lastest version in my site. It is using Evolve theme. Demo of this theme is here. The original demo is also slow. Slowing is like that, site is waiting for 9-10 seconds for ...
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?
1
vote
2answers
382 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 ...
0
votes
2answers
34 views

Tracking state of a one time event on a big website

Assume a website with 250 million active users. I add a new feature to the website. Once a user visits I want to use a short tutorial to teach them how to use said feature. I only want them to ...
13
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 ...