Dianping.com

 
Ads by Google
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 3463 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
0.90% of traffic
NY, New York 253 ms 384 ms 10 % 26.64 Kb/s
Florida, Tampa 246 ms 415 ms 35 %
 Germany
Frankfurt 508 ms 36 % 350 ms 9 %
 Canada
Montreal 583 ms 551 ms
 United Kingdom
Gloucester 329 ms 399 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), we concluded
overall This website speed rank is 27. That means 27% of the sites from the 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 Usa. It provides a representative sampling of 0.90% (0.90% is share of visitors from country Usa)

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 383 ms (see details). Test was conducted from 5 different locations. Average latency rating of the website is good (50% 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, 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
0.90% of traffic
NY, New York 253 ms 5%
267/255 ms
Florida, Tampa 246 ms 20%
287/239 ms
 Germany
Frankfurt 508 ms 46%
484/332 ms
 Canada
Montreal 583 ms 101%
539/268 ms
 United Kingdom
Gloucester 329 ms 23%
372/482 ms

Fragment of latency speed rating table for this website

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

# Domain Compare Ping Provider
1. Bazar.de 78 ms Netdiscounter Gmbh
2. Rue25.de 80 ms Netdiscounter Gmbh
3. Ccafrica.com 103 ms Hurricane Electric
... ... ... ... ...
145. Bjsez.com 380 ms China Unicom Jiangsu Province Network
146. 4008823823.com.cn 381 ms Chinanet Shanghai Province Network
147. Dianping.com 383 ms Chinanet Shanghai Province Network
148. Meeting.edu.cn 383 ms
149. 176pet.com 383 ms Chinanet Sichuan Province Network
... ... ... ... ...
289. Xingji2cn.com 286 ms
6 % Loss
Chinanet Guangdong Province Network
... ... ... ... ...
800. Toolxp.net
100 % Loss
Chinanet Jiangxi Province Network

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

To display this website browser needs to download 14 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 * 383 ms * 14 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 Bazar.de from the latency table for the city , it turns out that the difference in time only for the sending and receiving requests to the web server could be: 12.81 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 (180.153.132.38) 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: 0.42s (which is better than 54% of all sites). For more detailed stats look at DNS tests graph and DNS resolve page for China, 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
0.90% of traffic
NY, New York 384 ms 24%
396/320 ms
Florida, Tampa 415 ms 50%
502/335 ms
 Germany
Frankfurt 350 ms 54%
679/440 ms
 Canada
Montreal 551 ms 126%
657/291 ms
 United Kingdom
Gloucester 399 ms 28%
517/718 ms

Fragment of 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. Dlhtedu.com 91 ms Chinanet Jiangxi Province Network
2. 0760.com 99 ms Chinanet Guangdong Province Network
3. Manipalu.com 107 ms
... ... ... ... ...
362. Farsight.com.cn 418 ms Hichina Web Solutions (Beijing) Limited
363. Miaomu.com 418 ms Hichina Web Solutions (Beijing) Limited
364. Dianping.com 419 ms Chinanet Shanghai Province Network
365. 84684.net 419 ms China Unicom Jiangsu Province Network
366. 300net.com 419 ms Hichina Web Solutions (Beijing) Limited
... ... ... ... ...
800. Hometexnet.com 5718 ms Chinanet Guangdong Province Network

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 26.643Kb/s (which is better than 27% of all sites in this region). For more detailed stats check out report for 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.

Reduse DNS Resolve

Browsers must resolve site's hosts to display all of the elements of the Dianping.com's page. Every domain name resolve requires a time, which precedes the load from a specific domain. You can speed up page loading by reducing the number of hosts, from which elements of the page are loaded.
 Host www.dianping.com (2 files)
 Host i2.dpfile.com (9 files)
 Host i3.dpfile.com (2 files)
 Host hls.dianping.com (1 file)

Keep Components under 25K

Users often visit web site using a mobile phone. Even the most modern and advanced gadgets have some limitations. For example an iPhone browser do not cache page components bigger than 25K. So you should strive to ensure that scripts, CSS-styles, etc. are less than 25K.
http://www.dianping.com/citylist  Content-Encoding: text/html; charset=utf-8. File size 66.77 Kb.
http://i2.dpfile.com/combo/_s_js_g.mt.min.js-_s_js_g.dp.min.js-_s_res_...  Content-Encoding: application/x-javascript; charset=UTF-8. File size 63.04 Kb.
http://i2.dpfile.com/s/css/img/citylistinfo.png  Content-Encoding: image/png. File size 27.11 Kb.

Avoid 301 & 302 Redirects

Redirect allows you to make website or page available under many URLs. Webmasters use redirects when their sites change domain name, several websites are merged into one, document is moved too a new location, etc. Using a redirect delays content obtaining. Any delay negatively affects on the user experience. We've detected that page has 1 redirects before page components start loading. The following list contains some of these redirects:
http://www.dianping.com/ redirects to http://www.dianping.com/citylist
Try to reduce the number unnecessary redirects.

Specify image dimensions

The browser needs to know the actual dimensions of image (width and height) to quickly render webpage.

We have detected that the 2 images has no width and height.

If you do not specify the width and/or height, then in order to correctly display the image browser needs to download it and only then put on the screen. Otherwise, there is a chance browser will display elements under the picture inappropriately as well as the possible presence of "jumping" effect of the page content (until the page load is finished).

We provide below example of how to define the image s/css/img/regcity.gif dimensions:
35.   <img src="s/css/img/regcity.gif" alt="立即注册" width="IMAGE_WIDTH_HERE" height="IMAGE_HEIGHT_HERE">

Use the TITLE for A tag

As we have already mentioned, search engine bots can not see the site like a people do it. They more focused on the descriptions of certain page elements. That's why we strongly recommend use TITLE operator in the "A" tag. This operator not only describes the page referenced by the page more detailed, but also takes part in the page describing. For example, you have the link on your website:
11.   <a id="top" name="top">
We suggest you to remake it in this way:
11.   <a id="top" name="top" title="dianping.com">
Of course, you can (and should) use more proper phrase instead of the "dianping.com" that describes the link .

Number of links on the page

Try to avoid a large number of links on the page. Our robot have found 804 links on this page. Google recommends to keep the number of links fewer than 100. More information about this topic you can find in Google Webmaster Guidelines and in the post "How many links per page?" by Matt Cutts (head of Google’s Webspam team)


Our Mailbox © 2009 — 2011 SiteSpeedLab & SiteSpeedLab.com
Be Quick or Be Dead