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The following environments are representative of the general configuration and work environment of small and medium-sized enterprises. I hope this article will help you understand the MySQL database performance tuning method in Linux. 51CTO recommends the MySQL database getting started and proficient tutorial to you. Hardware preparation environment: Hard Drive: 16 SAS15KRAID5 with 512 MCacheCPU: Two AMD4 C
The IO performance of a disk is an important indicator of the overall performance of the computer. Linux provides the IOSTAT command to obtain disk input/output (i.e. IO) statistics, and Windows provides a WMI interface that allows you to write a simple script to get the functionality that is equivalent to Iostat.
1, Linux
Turn the notes of a great God.Linux performance optimization: 1, CPU,MEM2, DISK--RAID3, network-related peripherals, NIC Linux system performance analysis: Top:linux system load, Cpu,mem,swap, CPU-and memory-intensive processes, killing high-performance processes. [[emailprotected] ~]# toptop-22:45:24 up 22:53, 5 users
About linux performance tuning 2: optimizing swap partitions 1 of linux performance tuning: Disk partitioning policy http://www.2cto.com/os/201307/226371.html First, let's talk about what is a swap partition and its role? Swap partition, that is, Swap zone. The role of swap space can be described in a simple way... abo
With the development and popularization of Intenet, networks are widely used in embedded systems. More and more embedded devices use Linux operating systems. Linux is a free operating system with open source code and is highly portable. Therefore, it is increasingly important to study Socket network programming based on Linux.[Attach] 900 [/attach]Socket is actua
This article mainly introduces some basic knowledge about Linux cpu performance testing. first, we will introduce sched in Linux kernel. The scheduler is responsible for two types of resources in the scheduling system: thread and interrupt. The scheduler gives different priorities to different resources.
Linux testing
Linux2.6 is 110KB, which limits the connection bandwidth to 22 MB/s. the calculation method is as follows:
Throughput = window_size/RTT
110 KB/0.050 = 2.2 MB/s
Use the window size calculated above to get a bandwidth of 12.5 MB/s, that is:
625 KB/0 050 = 12.5 MB/s
The difference is great, and it can provide a larger throughput for the Socket. You can calculate the optimal buffer size based on your Socket. Socket provides several Socket options, two of which can be used to modify the size of the
Article Title: Linux Performance Testing Tool Lmbench introduction and instructions for use. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
Li
Who is better in the online world? Microsoft Windows service or open source Linux? This debate has aroused heated insights, but according to an IT consultant with rich Windows and Linux development experience, it is just a question about which server operating system is more suitable for the context requirements of the work to be done, based on standards such as expenditure,
If you're looking for a very easy-to-use Linux performance monitoring tool right now, I highly recommend installing and using the Nmon command-line utility.Nmon Monitoring ToolsThe Nmon is a system administrator-oriented tuning and benchmarking tool that can be used to display performance data about the following:
Processor
Memory
Internet
Di
Monitoring is the core task of cluster management. Monitoring data can be used for scheduling tasks, load balancing, reporting software and hardware faults to administrators, and extensively controlling system usage. The monitoring information must be obtained without affecting the cluster performance. This article will discuss how to use the/proc file system and Java to obtain monitoring data.
Java applications in
Analysis toolsA free tool for analyzing AIX and Linux performance, the Nmon tool helps to display all of the important performance tuning information on one screen and dynamically update it. This efficient tool can work on any dumb screen, Telnet session, or even dial-up lines. In addition, it does not consume a lot of CPU cycles, usually less than 2%. On the upd
Linux performance monitoring and Common commands
As a DBA, it is also necessary to have certain Linux server performance monitoring knowledge. Sometimes Oracle database performance problems are caused by server performance bottlen
Article Title: detailed introduction to linux performance monitoring. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
Networks are the most difficult to monitor in all subsystems. F
Analysis of Linux installation performance issues before installing a Linux system on a hardware system, you need to consider many performance issues that will help optimize the operating system and the applications running on it in the future. These problems include: selecting the partition location to use multiple ha
Linux performance monitoring command vmstat
I. Overview
Monitoring is usually divided into machine monitoring and service monitoring. Machine Monitoring is the basic monitoring to obtain the current running status of the system. service monitoring is the main purpose and the most important monitoring, machine Monitoring also exists for better service monitoring. In short, service monitoring is related to sp
optimal performanceTypically, an optimized Nginx Linux server can reach 500,000? 600,000 times/sec Request processing performance, however, my Nginx server can stabilize the processing performance of 904,000 times/sec, and I test more than 12 hours with this high load, the server work stably.Specifically, all of the configurations listed in this article are vali
know some theories, additional load tests, and years of System Administrator experience. If you do not have many years of experience, there is a simple way to draw the bottom line: to establish this bottom line on your own expectations of the system. What kind of performance do you expect this system to have? This is the bottom line. If this requirement is not met, the performance is poor. For example, VPS
Article Title: tips for using high-performance dual-effect firewall for LINUX. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
Working on Windows
Many users use both
When a Linux system encounters a problem, we not only need to view the system log information, but also need to use a large number of performance monitoring tools to determine which part (memory, CPU, hard disk ......) An error occurred. In Linux, all running parameters are stored in the virtual directory/proc. In other words, the data value obtained by the
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