CPU time limit is mainly to prevent excessive use entity web site host (web server) CPU resources. You must know in sharing host (share hosting), a plane entity set up as high as host hundreds of web sites. And all these sites to share this limited resources such as CPU, memory, and hard drive space, etc.

Of course you also don't want to other web site take over these resources and affect your site speed. Therefore, the host of the use of these resources have limits. This not only include only the CPU time limit, including memory, hard disk space, network traffic restrictions, and so on. The purpose of this kind of limit is just for a few websites, so that we can protect the interests of the most web site. And foreign host is more stable, is a big reason for such restrictions. If there is no similar restrictions, some sites will take up too much host resources, the effect of server crashing thus affecting other web sites.

Any site in some time use resources exceed the limit, the site might be temporarily closed for example was closed for three minutes, then new online. For example, some of the host owners will leave your site moved to a particularly powerful entities host (web server), and then ask you to change your website network program, after your web site new move to the host before entity, but different host company has not the same closing mode. In fact, each host commerce related the limit, whether China, Taiwan, Hong Kong, the UK... Host business and so on have similar restrictions. Just most of the host providers in terms of use in the clear pointed out that limit details (such as in 3 minutes can't use more than 40 seconds of CPU time). Just general indicate cannot excessive use "the resources" (general resources) and "fair use" (fair usage) ordinance just.

In general, the only sure you website network procedures, such as script, cgi, perl, xoops... And so on not too complicated or decrease as far as possible a similar dynamic network program is the only to avoid this kind of CPU time limit the emergence of the problem. And, even your network program is very complex all right, but as long as the website traffic is not very high word, still won't have a similar problem.

Otherwise, you will have to consider the Virtual host (" exclusive Virtual Private Server/VPS) or independent Server

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