How to optimize the performance of Apache servers

This document describes how to optimize the performance of Apache servers-Linux Enterprise applications-Linux server applications. Test and improve performance

The Apache server has been designed as fast as possible. Even if you use a machine with low configuration and do not need to make too complex settings, the response content of the server is sufficient to fill with various narrowband connections. However, with the increasing complexity of website content and bandwidth, it is increasingly important to optimize Apache to achieve better performance.

If the optimization result is only a small performance improvement, it is a waste of time. Imagine that it took you several hours or even days to adjust Apache parameters, but the result was only a few percent of performance improvement? Therefore, before optimization, the first step should be to test the performance level of your current server so as to determine how to optimize your server and measure the optimization effect.

We have not mentioned the test of Apache for the first time (see the article rush out of the water), as we mentioned earlier, it is often difficult to determine which part of the bottleneck is caused by the configuration of Apache or the dynamic website program environment you are using? Whether the query is caused by the website program is beyond the scope of this article, here we will mainly discuss some common practices for improving the speed of the Apache server and how it interacts with other components that make up the WEB site.

Host hardware

The machine and operating system environment where Apache is located are the most influential factors on performance. Obviously, a 368 PC won't have the same performance as a P4 or dual-processor machine. However, if hardware changes are not involved, the biggest thing we can do is to first check whether Apache runs on a dedicated server, sharing a server with other applications will definitely affect the server performance.

In most cases, bid farewell is a key factor affecting the performance of static websites, because it determines how much content Apache can cache. The more content it caches, the fewer chances it will have to read from the hard disk. It is time-consuming to access a specific file on the hard disk. If your website mainly contains static content, you 'd better use the mod_cache option. If your memory is large enough, you can use the mod_mem_cache option.

The first option caches the information on the disk. It works well when used with the mod_include option. This option stores the final version of the page in the cache when creating a page. Use mod_mem_cache to save the cached content in a memory heap that can be shared by all Apache processes.

Using a faster disk or RAID can increase Apache's access to disk files. Note that if you have made all of the following optimizations, a hardware (not software) upgrade solution is a better choice. The last question about hardware is the CPU capability, which has a great impact on dynamic content websites. The more dynamic content, the higher the requirement.

By cutting out the potential of the Apache server, you can make a big difference to your website, especially for some dynamic websites. This article focuses on how to optimize the installation and configuration of the Apache server, which is also the most controllable part.

Test and improve performance

The Apache server has been designed as fast as possible. Even if you use a machine with low configuration and do not need to make too complex settings, the response content of the server is sufficient to fill with various narrowband connections. However, with the increasing complexity of website content and bandwidth, it is increasingly important to optimize Apache to achieve better performance.

If the optimization result is only a small performance improvement, it is a waste of time. Imagine that it took you several hours or even days to adjust Apache parameters, but the result was only a few percent of performance improvement? Therefore, before optimization, the first step should be to test the performance level of your current server so as to determine how to optimize your server and measure the optimization effect.

We have not mentioned the test of Apache for the first time (see the article rush out of the water), as we mentioned earlier, it is often difficult to determine which part of the bottleneck is caused by the configuration of Apache or the dynamic website program environment you are using? Whether the query is caused by the website program is beyond the scope of this article, here we will mainly discuss some common practices for improving the speed of the Apache server and how it interacts with other components that make up the WEB site.

Host hardware

The machine and operating system environment where Apache is located are the most influential factors on performance. Obviously, a 368 PC won't have the same performance as a P4 or dual-processor machine. However, if hardware changes are not involved, the biggest thing we can do is to first check whether Apache runs on a dedicated server, sharing a server with other applications will definitely affect the server performance.

In most cases, bid farewell is a key factor affecting the performance of static websites, because it determines how much content Apache can cache. The more content it caches, the fewer chances it will have to read from the hard disk. It is time-consuming to access a specific file on the hard disk. If your website mainly contains static content, you 'd better use the mod_cache option. If your memory is large enough, you can use the mod_mem_cache option.

The first option caches the information on the disk. It works well when used with the mod_include option. This option stores the final version of the page in the cache when creating a page. Use mod_mem_cache to save the cached content in a memory heap that can be shared by all Apache processes.

Using a faster disk or RAID can increase Apache's access to disk files. Note that if you have made all of the following optimizations, a hardware (not software) upgrade solution is a better choice. The last question about hardware is the CPU capability, which has a great impact on dynamic content websites. The more dynamic content, the higher the requirement.