Www.beishuo.net website Open Unusually slow reason

Source: Internet
Author: User

phenomenon: Customer complaintshttp://www.beishuo.net/Web site cannot be opened under the mobile line or open unusually slow (dark green is the time that the server sends the data to the client, which is a very lengthy period)
650) this.width=650; "alt=" Picture "src=" http://r.photo.store.qq.com/psb?/V13sYmQj3YfDK8/ 637qyojclu09rsxi8hwo0v00iaif7datlqzwaepwilm!/o/dcuaaaaaaaaa&bo=pgsaahcfaamdmlw! "style=" vertical-align:top; width:870px;height:512px; "/>
Analysis: This case is more interesting, I used to analyze the packet when the server's retransmission rate is very high, generally reached more than 12%, such as, a 450K of content, spent a full 1 minutes and 3 seconds to receive the complete, retransmission rate of up to 12%, which is also on the dark green client received over the long time reason
650) this.width=650; "alt=" Picture "src=" http://r.photo.store.qq.com/psb?/V13sYmQj3YfDK8/ lagmfqwguby3gb7p0fwpxglpvkhneqin60948bnel70!/o/dimbaaaaaaaa&bo=yqmfaskdhwidedu! "style=" vertical-align:top; width:870px;height:487px; "/>
From this I judge, either the server itself problem, or the line problem caused the packet loss, then how to make further judgment?
Step 1: I try to open the website below the telecom line and the discovery is also unusually slow! Seems to be understood to be unrelated to the line?
Step 2: Use best trace to track the IP:66.116.220.181  www.beishuo.net
650) this.width=650; "alt=" Picture "src=" http://b366.photo.store.qq.com/psb?/V13sYmQj3YfDK8/ o7ziqmkjsbxoszmrap1mvslz8slpdqamomf8vjh3igm!/b/dg4baaaaaaaa&bo=aqp0aqed9aededu! "style=" vertical-align:top; width:769px;height:500px; "/>
Discover server address a opentransfer factory in the United States since it is a foreign server, the experience should be that the transmission line caused by a greater chance of retransmission. It's still impossible to judge.
Step 3: Use a proxy server to troubleshoot the server: I tried to access it using a proxy server located in Japan66.116.220.181  www.beishuo.net   
650) this.width=650; "alt=" Picture "src=" http://r.photo.store.qq.com/psb?/V13sYmQj3YfDK8/ ulwiio4khcngphss9juak5b03pbxkkhpotdxsbzlciu!/o/diibaaaaaaaa&bo=8gpnafidzqediau! "style=" vertical-align:top; width:870px;height:397px; "/>Get HttpWatch, find the speed is very fast, and did not lose packets, then the elimination is the service problem caused by the loss of packets, so that the website open slowly problem due to the line problem
650) this.width=650; "alt=" Picture "src=" http://r.photo.store.qq.com/psb?/V13sYmQj3YfDK8/ fxrnkn4bp9s6bfcsx6rnoqjekr1vec2ujs8hsolq*j0!/o/dg4baaaaaaaa&bo=pwsaahcf*widmem! "style=" vertical-align:top; width:870px;height:512px; "/> Many people think that this is the end of the matter, but the site is slow to open a second reason: for example, I found that there was a translate.google.com translation js and a Google picture that could not be loaded when the agent was opened under Mobile and telecom:
650) this.width=650; "alt=" Picture "src=" http://r.photo.store.qq.com/psb?/V13sYmQj3YfDK8/ xugbimmwgi6lwqgnzin6fpiuckx5jumcnxnvhh6aut8!/o/dg4baaaaaaaa&bo=ewsaaiwf4widmca! "style=" vertical-align:top; font-family:arial;font-size:14px;line-height:22.4px;white-space:normal;width:870px;height:485px; "/>
I use HttpWatch preliminary judgment is a translation of translate.google.com JS cannot load, here shows load 96 seconds or no response
Analysis: We simply look at what's wrong with the section:
Click to open the Packet label filter Google found to be able to resolve the customer to Google domain name IP but can not connect with Google Server, each session connection to the client three times after the Syn end
650) this.width=650; "alt=" Picture "src=" http://r.photo.store.qq.com/psb?/v13symqj3yfdk8/dzli2gu* 0fgxzqhca8fkjep1xib7fzcgemvqrrolszy!/o/diebaaaaaaaa&bo=egsxariesqededu! "style=" vertical-align:top; font-family:arial;font-size:14px;line-height:22.4px;white-space:normal;width:870px;height:361px; "/>
Click to open the TCP session, filter Google we found that the client started from 11:56, a total of 13 and Google's session, each time with a different port number to initiate the session 3 Syn, all lasted until 12:03 minutes end, and then the server did not respond at all
650) this.width=650; "alt=" Picture "src=" http://r.photo.store.qq.com/psb?/V13sYmQj3YfDK8/ gcmparwupfrlroyiz9vdn4fofmonbegradwvkxawhhs!/o/dg4baaaaaaaa&bo=hwqwah8emaidedu! "style=" vertical-align:top; width:870px;height:461px; "/>
We look at the source of the Web page: the developer in the beginning of the page called a Google translation js file, and in the following body made a list element, called a Google image element, and then the page will need to be in a few minutes after the connection timeout before fully loaded, And you can't use Google Translate js and pictures.
650) this.width=650; "alt=" Picture "src=" http://r.photo.store.qq.com/psb?/v13symqj3yfdk8/7* wxz6huwtk00wud55u803eth4kfbsdenighn7vl*fm!/o/dn8aaaaaaaaa&bo=pqntakuduwadedu! "style=" vertical-align:top; width:870px;height:77px; "/>

650) this.width=650; "alt=" Picture "src=" http://r.photo.store.qq.com/psb?/V13sYmQj3YfDK8/ Mcbxt3hpl0dp63yfjcpd7czt1qiszsw*e857n6. hy4!/o/diqbaaaaaaaa&bo=mwmjadmdiwadedu! "style=" vertical-align:top;width:819px;height:35px; "/>
If you use a proxy server then the situation will be: The JS (altogether 3 elements) opened first, and soon loaded, such as
650) this.width=650; "alt=" Picture "src=" http://r.photo.store.qq.com/psb?/v13symqj3yfdk8/* tnv6iunusvbtuniixqn02cpux3jniun3t6fmvex6dc!/o/dgobaaaaaaaa&bo=rasaahgf*aidicq! "style=" vertical-align:top; width:870px;height:509px; "/>
Many people are puzzled, said why these few JS do not load the entire page can not open it?
The HTTP1.1 protocol currently supports up to 3 TCP download streams at the same time, and if not freed or the session times out, the remainder is not downloaded in parallel, which is a flaw in the protocol. The code writer initially quoted 3 Google elements, and the inability to download caused the session to time out.
At this point the problem is positioned:foreign export line drops serious plus Google's JS plugin (and located in the page header of a total of 3 elements) can not be loaded, timeout, to load the remaining content caused by the Web page open unusually slow
Solution: Considering this is a foreign trade website, the problem is also in the country, the developer or domestic users we suggest to use the wall650) this.width=650; "alt=" Trapped "src=" Https://qzs.qq.com/qzone/em/e125.gif "style=" vertical-align:top;font-family: arial;font-size:14px;line-height:22.4px;white-space:normal; "/>  , and suggest Google Translate JS plug-in to the end of the page to speed up the page opening speed

Www.beishuo.net website Open Unusually slow reason

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