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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0
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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 ...
6
votes
1answer
66 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
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3answers
60 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 ...
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 ...
5
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3answers
241 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 ...
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'). ...
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 ...
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 ...
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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
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 ...
1
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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 ...
1
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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 ...
0
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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
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
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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. ...
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 ...
0
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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. ...
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
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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 ...
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. ...
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
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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
1answer
159 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 ...
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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 ...
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?
0
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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 ...
3
votes
3answers
512 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 ...
0
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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 ...
1
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0answers
35 views

Increasing server speed(More info in question) [closed]

So I have recently been employed as a webmaster at a local High School, and I have walked into a nightmare. Their are 3 servers which hold about 300 WordPress/wiki sites for all the teachers. As well ...
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 ...
1
vote
2answers
95 views

Google Analytics Site Speed - iOS not being sampled

I'm looking at a breakdown of site speed by operating system in Google Analytics to get a sense of mobile vs desktop load times. The problem is that it looks like GA doesn't really collect speed ...
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 ...
2
votes
1answer
226 views

PageSpeed - Minimize DNS lookups: why not use IP address for resources

One of the recommendations from web performance optimization services is to minimize DNS look ups. I fully understand why they recommend this but why not just point references to external files to ...
0
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0answers
41 views

What to use for rapid PageSpeed analysis — Google Insights or Chrome extension?

Which score is most reliable (and complete) to use when comparing different sites and pages to get a quick idea (e.g. between competitor websites without detailed analysis)? I am asking because for ...
1
vote
1answer
881 views

Plesk: View system resources (e.g., RAM, CPU, etc…) for a VPS

I've setup my first VPS. Previously I've always been hosting my projects on a shared hosting account. I run a couple of little personal projects on the VPS, including one that is continuously scraping ...
1
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0answers
23 views

Advice scaling website [duplicate]

We could use advice on a scaling/ops issue. We have a simple website that runs on Rails 3.2.12 and uses MongoMapper instead of ActiveRecord. There is one database call that sporadically performs ...
1
vote
0answers
101 views

Open Source website performance monitoring [closed]

I am looking for an Open Source solution to monitor my web sites' performance over time. More specifically, I am looking for something I can run on a server that will (on a continual basis) monitor ...
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
80 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
752 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
86 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 ...
1
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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
72 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
3answers
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 ...