apache performance tuning linux

Linux server performance tuning skills, linux Server TuningPerformance tuning skills for 20 Linux servers Guide Linux is an open-source operating system that supports variou

1 read the Apache configuration optimization recommendations below, then adjust the relevant parameters to observe the status of the server.2 Apache Configuration Tuning Recommendations:3Enter/usr/local/apache2/conf/under the extra directory4 Apache optimization,5 after the above operation,

Article title: Overview of tuning methods for Linux network performance tuning. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research

Linux Performance Tuning Overview -What is performance tuning? (What)-Why performance optimization? (Why)-When do I need performance optimization? (When)-Where do I need

set-up value. The goal is to mitigate the effects of excessive procedures and therefore not buildDisable these settings globally. There is one more thing to note about Max_execution_time: It represents the CPU time of the process, not the absolute time. So a progressiveA program that runs large amounts of I/O and a small number of computations may run far more than Max_execution_time. This is also max_input_time can be greater thanThe reason for Max_execution_time.The number of log records that

Performance optimization is to improve the system performance, reduce energy usage, or reduce the impact of applications on other parts. If the optimization is hasty or there is no measurement, of course, performance optimization may have a bad effect. Performance optimization is to improve the system

the implementation of join. And this operation plays a crucial role in the secondary sort mode. Secondary sort mode refers to the user expects data to be grouped by key and wants to traverse value in a specific order. UserepartitionandsortwithinpartitionsPlus a part of the user's extra work can achieve secondary sort.ConclusionYou should now have a good understanding of all the essential elements needed to complete an efficient Spark program. In part II, you will learn more about resource invoc

unstable in earlier versions of Spark, and Spark does not want to break version compatibility, so Kryoserializer is not configured as the default, but Kryoserializer Should be the first choice under any circumstances.The frequency with which your record is switched in these two forms has a significant impact on the operational efficiency of the Spark application. Check out the types of data passing around, and it's worth trying to see if you can squeeze a little water.Excessive deserialization

value of the number of client-side request connections is maximum 20000 MaxClients 150# allow the number of client side request connections The default maxclients and Serverlimit must be increased by Maxclients Threadsperchild 25# Each child process establishes the number of threads to be executed by default 100~500 maximum value 20000 and threadlimit must be increased at the same time Threadlimit 200# Maximum number of threads per child process configurable Threadlimit>=threadsperchild Maxr

I started to write this post before weeks ago and finally publish it even if it's not totally finish. it is just a little feedback about tuning a full lamp server with some user traffic and services load. important thing to notice is that all stuff in this post isNot the solution. You will probably have to tune little more for adapt all this to your personal server usage, server load, development architecture. so, use those tips as a kind of inspirat

amount of data written to the block device (that is, write disk, Unit kb/sec)The Bi+bo reference value set here is 1000, if more than 1000, and the WA value is larger, it represents the system disk IO performance bottleneck.5) SystemThe a.in column represents the number of device interrupts per second observed in a time interval;The B.cs column represents the number of context switches produced per second.The higher these two values are, the more CPU

higher, faster disk.2.5.1. Network performance evaluation（1）通过ping命令检测网络的连通性（2）通过netstat –i组合检测网络接口状况（3）通过netstat –r组合检测系统的路由表信息（4）通过sar –n组合显示系统的网络运行状态Three Linux server performance Tuning 1. Tuning the Linux kernel elevator alg

, process properties, and resources for the build process. If you understand the process constructs, you can understand what is important for the running and performance of the process. Figure 1-2 shows an overview of process information related to process architecture.Linux process management for Linux Performance and Tuning