2500sz.com

 
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Latensy Flash Graph
 Usa, NY, New York
 Usa, Florida, Tampa
 Germany, Frankfurt
 Canada, Montreal
 United Kingdom, Gloucester
Learn more at Latency Testing Profile
Separate test for different locations, time frames
The chart will appear within this DIV. This text will be replaced by the chart.
 Usa, NY, New York
 Usa, Florida, Tampa
 Germany, Frankfurt
 Canada, Montreal
 United Kingdom, Gloucester
Learn more at DNS Testing Profile
Separate test for different locations, time frames
Learn more at PageSpeed Testing Profile

WebSite Speed Profile

Site Speed Success Formula = good website latency + fast DNS lookup + high page load speed.
Site Speed Laboratory offers analysis of DNS Lookup speed & latency tests (ping) & Page Load speed for every website. Our analysis is based on data for May 30 2011. Since the first of July 2010 we carried out 23 tests from locations
for the main page of this website, the last of which were made about 3511 hours ago

Tests Summary

Latency Summary

DNS Summary

Page Speed Summary

Site Speed Laboratory Summary for this website

Location Ping Ping,
change		 DNS Lookup DNS Resolve,
change		 Page Speed Page Speed,
change
 Usa
 NY, New York 479 ms 35 % 467 ms 22 % 0.04 Kb/s 100%
Florida, Tampa 266 ms 6 % 470 ms 84 %
 Germany
 Frankfurt 511 ms 24 % 427 ms 24 %
 Canada
 Montreal 265 ms — 424 ms —
 United Kingdom
0.80% of traffic		 Gloucester 446 ms — 389 ms —

Summary Widget

SiteSpeedLab Overall Website Rating for this website
Based on our speed test results table and considering features of the current webserver location (China, Beijing), we concluded
overall This website speed rank is 2. That means 2% of the sites from the Beijing are slower for visitors than this website.

It is important to understand that you can't evaluate website speed without considering website audience location. You should evaluate the speed of the site considering location of your primary audience (visitors), and not just from abstract tests from various points of the planet. There is a chance that your website is quite slow for visitors from German but pretty quick for Australian users at the same time. Based on a primary audience location data Site Speed Laboratory maintains objective rating. Our main test server for this website is located in United Kingdom. It provides a representative sampling of 0.80% (0.80% is share of visitors from country United Kingdom)

You should not overestimate the importance of the website speed factor. Google has more than 200 ranking factors and website speed is just one of them.

Website Latency (Ping Test)

Latency Tests

Check details on Ping Graph

Latency affects on the rate of exchange of network packets between the client (user's computer) and the webserver. The lower latency to webserver means the faster start of the processing of all requests to the webserver, and after all the faster page loading. According to our data the average latency to the web server is 393 ms (see details). Test was conducted from 5 different locations. Average latency rating of the website is good (44% websites are slower). For detailed latency stats from different locations, as well as time slices for a month, 3 months and 6 months and more visit Ping Test Graph. We also recommend to take a look at latency rating at the China, Beijing location. This will give you an idea about average latency values in the region. And the answer to the question of how good this result for the this website.

Latency History Graph

Compare Latency From
Usa▼
Germany, Frankfurt
Canada, Montreal
United Kingdom, Gloucester
The main purpose of the testing is a measuring the speed and rating the stability of the latency to this IP from around the world in comparison with sites of the region (the city).
The chart will appear within this DIV. This text will be replaced by the chart.
 Usa, NY, New York
 Usa, Florida, Tampa
 Germany, Frankfurt
 Canada, Montreal
 United Kingdom, Gloucester

Graph Legend

  • Maximum latency for current location, mouse over for the details.
  • Mimimal latency for current location, mouse over for the details (date, value, etc.)
  • Numbered vertical lines indicate the change of IP for the current site
  • Data Loss
Compare Latency From
Usa▼
Germany, Frankfurt
Canada, Montreal
United Kingdom, Gloucester
The main purpose of the testing is a measuring the speed and rating the stability of the latency to this IP from around the world in comparison with sites of the region (the city).
The chart will appear within this DIV. This text will be replaced by the chart.
 Usa, NY, New York
 Usa, Florida, Tampa
 Germany, Frankfurt
 Canada, Montreal
 United Kingdom, Gloucester

Graph Legend

  • Maximum latency for current location, mouse over for the details.
  • Mimimal latency for current location, mouse over for the details (date, value, etc.)
  • Numbered vertical lines indicate the change of IP for the current site
  • Data Loss
Compare Latency From
Usa▼
Germany, Frankfurt
Canada, Montreal
United Kingdom, Gloucester
The main purpose of the testing is a measuring the speed and rating the stability of the latency to this IP from around the world in comparison with sites of the region (the city).
The chart will appear within this DIV. This text will be replaced by the chart.
 Usa, NY, New York
 Usa, Florida, Tampa
 Germany, Frankfurt
 Canada, Montreal
 United Kingdom, Gloucester

Graph Legend

  • Maximum latency for current location, mouse over for the details.
  • Mimimal latency for current location, mouse over for the details (date, value, etc.)
  • Numbered vertical lines indicate the change of IP for the current site
  • Data Loss
Compare Latency From
Usa▼
Germany, Frankfurt
Canada, Montreal
United Kingdom, Gloucester
The main purpose of the testing is a measuring the speed and rating the stability of the latency to this IP from around the world in comparison with sites of the region (the city).
The chart will appear within this DIV. This text will be replaced by the chart.
 Usa, NY, New York
 Usa, Florida, Tampa
 Germany, Frankfurt
 Canada, Montreal
 United Kingdom, Gloucester

Graph Legend

  • Maximum latency for current location, mouse over for the details.
  • Mimimal latency for current location, mouse over for the details (date, value, etc.)
  • Numbered vertical lines indicate the change of IP for the current site
  • Data Loss

How to read the graph's data

This graph represents a detailed statistics of website latency. Periodical measurements give a complete picture of website availability from the different areas of the planet. Particular attention is given to the expansion of our testing servers around the world, in order to test the site availability and latency in those locations where most of your visitors are. Of course, the faster access to the site means users get content faster. It means less bounce (bounce rate) and faster ads delivering (and therefore better performance CTR, eCPM). This is even more important given the fact that we've detected Google Adsense ad network code on this site. Ultimately, the best availability of the site gives you an edge over your competitors. More information can be read on our page about the importance of the latency speed for the website speed up.

Compare Latency Statistic

Compare latency


vs

Our Servers
Usa
NY, New York
Florida, Tampa
Germany, Frankfurt
Canada, Montreal
United Kingdom, Gloucester

Dynamic of the Latency Changes for the website from various locations.

Location Last check 7 day change 1 month change 3 month change 6 month change
 Usa
 NY, New York 479 ms — — — 20%
310/259 ms
Florida, Tampa 266 ms — — — 13%
285/252 ms
 Germany
 Frankfurt 511 ms — — — 38%
522/377 ms
 Canada
 Montreal 265 ms — — — 7%
273/255 ms
 United Kingdom
0.80% of traffic		 Gloucester 446 ms — — — 3%
314/305 ms

Fragment of Beijing latency speed rating table for this website

The table is constructed according to the data from the US datacenters

# Domain Compare Ping Provider
1. Examw.com 150 ms Chinanet Hunan Province Network
2. Loveshequ.com 153 ms Beijing Teletron Telecom Engineering Co., Ltd.
3. Mybjhome.com 201 ms Data Communication Division
... ... ... ... ...
3430. Eduww.com 392 ms
6 % Loss		 China Network Information Center
3431. Xilu.com 393 ms
6 % Loss		 China Internet Network Information Center
3432. 2500sz.com 393 ms
6 % Loss		 Chinanet Jiangsu Province Network
3433. Smartdevices.com.cn 393 ms
6 % Loss		 China Tietong Telecommunications Corporation
3434. Chahua.org 393 ms
6 % Loss		 China Internet Network Information Center
... ... ... ... ...
9785. Zzbright.com —
100 % Loss		 China Network Information Center

Why the low latency is important with this site as an example

To display this website browser needs to download 1 objects. Though modern browsers use parallel connection now, we'll simplify the conditions and calculate the time spent by the browser for these sites in a single-threaded mode. Time required to establish HTTP connection only:
3 * website latency * website objects
+ preparation of the webserver response. Number 3 in the formula is a three phase of a TCP connection: sending a SYN request from the client to the server, sending ASK + SYN from the server to the client and the ASK sending from the client to the server. Though we can not calculate the time for a webserver response, the total time for sending and receiving requests for each of the object will be:
3 * 393 ms * 1 objects = 0 sec
Of course, modern browsers use several simultaneous connections to download content from a domain (from 2 to 8 at the time of writing this document). And in some browsers the number of connections can be set manually (Opera). But, if you impose these data on the first site Examw.com from the latency table for the city Beijing, it turns out that the difference in time only for the sending and receiving requests to the web server could be: 0.73 sec. Sure, making such calculations must always take into account the audience site, and always make an accent on the fact that the server should always be so geographically closer to the primary audience as it possible. Also we recommend to pay attention to an article about importance of the latency on our site.

DNS Lookup Speed

Browser should lookup domain name and get IP address of the server (58.211.0.111) before downloading the page. We test DNS resolve for this domain from 5 locations. That's how we've got the average time of receiving IP: 0.44s (which is better than 48% of all sites). For more detailed stats look at DNS tests graph and DNS resolve page for China, Beijing location (Average value on the widget is an average DNS resolve time for websites hosted at the same location).

DNS History Graph

Compare DNS From Servers
Usa▼
Germany, Frankfurt
Canada, Montreal
United Kingdom, Gloucester
The main purpose of the testing is a measuring the speed and rating the stability of the latency to this IP from around the world in comparison with sites of the region (the city).
The chart will appear within this DIV. This text will be replaced by the chart.
 Usa, NY, New York
 Usa, Florida, Tampa
 Germany, Frankfurt
 Canada, Montreal
 United Kingdom, Gloucester

Graph Legend

  • Maximum latency for current location, mouse over for the details.
  • Mimimal latency for current location, mouse over for the details (date, value, etc.)
  • Milestones indicate the change of IP for the current site
  • Data Loss
Compare DNS From Servers
Usa▼
Germany, Frankfurt
Canada, Montreal
United Kingdom, Gloucester
The main purpose of the testing is a measuring the speed and rating the stability of the latency to this IP from around the world in comparison with sites of the region (the city).
The chart will appear within this DIV. This text will be replaced by the chart.
 Usa, NY, New York
 Usa, Florida, Tampa
 Germany, Frankfurt
 Canada, Montreal
 United Kingdom, Gloucester

Graph Legend

  • Maximum latency for current location, mouse over for the details.
  • Mimimal latency for current location, mouse over for the details (date, value, etc.)
  • Milestones indicate the change of IP for the current site
  • Data Loss
Compare DNS From Servers
Usa▼
Germany, Frankfurt
Canada, Montreal
United Kingdom, Gloucester
The main purpose of the testing is a measuring the speed and rating the stability of the latency to this IP from around the world in comparison with sites of the region (the city).
The chart will appear within this DIV. This text will be replaced by the chart.
 Usa, NY, New York
 Usa, Florida, Tampa
 Germany, Frankfurt
 Canada, Montreal
 United Kingdom, Gloucester

Graph Legend

  • Maximum latency for current location, mouse over for the details.
  • Mimimal latency for current location, mouse over for the details (date, value, etc.)
  • Milestones indicate the change of IP for the current site
  • Data Loss
Compare DNS From Servers
Usa▼
Germany, Frankfurt
Canada, Montreal
United Kingdom, Gloucester
The main purpose of the testing is a measuring the speed and rating the stability of the latency to this IP from around the world in comparison with sites of the region (the city).
The chart will appear within this DIV. This text will be replaced by the chart.
 Usa, NY, New York
 Usa, Florida, Tampa
 Germany, Frankfurt
 Canada, Montreal
 United Kingdom, Gloucester

Graph Legend

  • Maximum latency for current location, mouse over for the details.
  • Mimimal latency for current location, mouse over for the details (date, value, etc.)
  • Milestones indicate the change of IP for the current site
  • Data Loss

Compare DNS Speed

Compare DNS Lookup


vs

Our Servers
Usa
NY, New York
Florida, Tampa
Germany, Frankfurt
Canada, Montreal
United Kingdom, Gloucester

The table below shows the dynamic of the DNS Lookup speed changes for the website from various locations.

Location Last check 7 day change 1 month change 3 month change 6 month change
 Usa
 NY, New York 467 ms — — — 19%
381/319 ms
Florida, Tampa 470 ms — — — 11%
346/389 ms
 Germany
 Frankfurt 427 ms — — — 9%
410/449 ms
 Canada
 Montreal 424 ms — — — 15%
361/314 ms
 United Kingdom
0.80% of traffic		 Gloucester 389 ms — — — 3%
416/402 ms

Fragment of Beijing DNS Speed rating table for this website

The table is constructed according to the data from the US datacenters

# Domain Compare DNS Resolve Speed Provider
1. Cnnic.net.cn 47 ms China Network Information Center
2. Zoname.com 49 ms Chinanet Jiangsu Province Network
3. 1kan.com 66 ms China Network Information Center
... ... ... ... ...
5057. Crsa.org.cn 434 ms China Network Information Center
5058. Jrj.com.cn 435 ms Abitcool(China) Inc.
5059. 2500sz.com 435 ms Chinanet Jiangsu Province Network
5060. Bookschina.com 435 ms Abitcool(China) Inc.
5061. 0512home.com 435 ms Data Communication Division
... ... ... ... ...
9785. Aodundns.com 7453 ms Jiangxi Provincial Network Of China Netcom

Page Speed Test

Content-Type's Weights
 
 
Content-Type's Weights by Hosts
 
 
Downloading page itself is the final stage of the testing. Actually, this is the last stage, after which page is displayed completely for user. The download speed depends on many factors. Main factors are the following: the width of the bandwidth up to the domain, the number of simultaneous download threads, speed of the server, a distance between user and domain web server. Recent measurements have shown the speed of page download for this domain is 0.039Kb/s (which is better than 2% of all sites in this region). For more detailed stats check out report for Beijing hosted websites.

 
 
 

Page Speed

Page Speed is a key factor in the website speed estimations (along with DNS lookup speed and website latency). Speed of the page loading, sophisticated subdomains usage for static content (images, css), optimized code (html, js), hosting on fast servers with good latency to its audience leads to good results and, ultimately, to a good website profitability.

While conducting tests we emulate a visit your website using the browser Firefox 3.5.6. Test results of the page loading listed in this table:

Pagespeed Flash Table

Ways to improve website performance

Once the document (website's main page) has been downloaded, we analyze it. It allows us to give webmasters some recommendations on how to optimize page load speed. We analyze the internal and external factors.

Enable GZIP Compression

This is a good practice to give the user content in compressed form. We've detected 0.04 Kb of content that could be compressed. By compressing content you can achieve the size of ~ 0.01 Kb (saving 0.03 Kb). This would accelerate the page loading speed and would positively impact the bandwidth savings in Chinanet Jiangsu Province Network.
http://2500sz.com/. File size 0.04 Kb and you can save up to 0.03 Kb

Content Semantics

We suggest you along with important and well-known tags like Title & H1 use also H2, H3, H4, H5, STRONG tags. Each page can (and should) highlight not only the main topic, but also complement the semantic core of the page and the whole site with the secondary keywords. For example, if the main topic of the page is dedicated servers, there is a probability that page has a blog about managed dedicated servers. If so try to highlight the title of the block by using tag <H2>, and an information that you provide this service in the United Kingdom highlight with H3 tag and so on. Thus try to highlight every important fragment of the information on your page with tags like STRONG, H2, H3, etc. We did not find H2 tags, H3 tags, H4 tags, H5 tags, STRONG tags on the page


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