linux performance tuning books

Talking about linux performance tuning 9: changing system default limits; talking about linux performance tuning 8: Removing unnecessary overhead http://www.2cto.com/os/201307/228393.html After reading the first two articles, we a

multiple hard disks to form a large space.Partitioning is only marked on the hard disk, but not formatted as a file system, so the speed is fast.The faster the hard disk depends on the outside. [The smaller the Partition Number is, the more the disk depends on the outside area. Therefore, the larger the data volume, the first partition.]Program developers focus on the functional requirements of employers, and system administrators focus on program resource overhead.

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. BKJIA recommends the MySQL database getting started and proficient tutorial. Hardware preparation environment: Hard drive: 16 SAS

A free ebook that IBM released early on the internet10 years, the reference value is still very big.Domestic translation into Chinese online reading version.See two URLs belowLinux Performance and Tuning guidelinesHttps://www.gitbook.com/book/lihz1990/transoflptg/details=========================================Server Optimization IdeasManage the change processManagement change and

Linux Performance Tuning 5: tuning an Important Role in soft raid storage. RAID independent redundant disk arrays are classified into two types: raid card-based hard raid (hardware implementation, high speed, suitable for large-scale applications), system-based soft raid (generally included in the kernel,

Article Title: Linux performance monitoring and tuning (CPU ). 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. In fact, there are many a

user data on each disk, Causing greater I/O rates to the physical disk and allowing disk bottlenecks to occur. The most common disk bottleneck is that the hard disk is too small; Most disk configurations are based on capacity requirements rather than performance; The cheapest solution may be a small number of large-capacity disks; The second most common problem is having too handle logical disks on the same array. This increases seek time and signif

Hardware preparation environment: Hard Disk: 16 SAS15KRAID5 with 512 MCacheCPU: AMD4 core two memory: 16 GB software environment: Operating System: RedHatAS4.62.6.9 Hardware preparation environment: Hard Disk: 16 SAS 15 K RAID5 with 512 MCacheCPU: AMD 4-core two-core memory: 16 GB software environment: Operating System: RedHat AS4.6 2.6.9 Hardware preparation environment: Hard drive: 16 SAS 15 k raid 5 with 512 MCache CPU: AMD 4-core two Memory: 16 GB Software environment: Operating System:

Hardware preparation environment: Hard drive: 16 SAS 15 k raid 5 with 512 MCache CPU: AMD 4-core two Memory: 16 GB Software environment: Operating System: RedHat AS4.6 2.6.9-67. ELsmp Mysql: 5.0. Performance Tuning based on different scenarios is as follows: Scenario: Write operations (insert, query, and delete) are intensive, and the data capacity far exceeds the memory size (minimum is more than GB, or ev

Linux system Performance Tuning related commands summary:1. PS: See which processes are currently running in the systemCommon commands are PS aux | Grep-i MySQLHttp://www.cnblogs.com/peida/archive/2012/12/19/2824418.html2. Top: Dynamic display of the CPU, memory usage, and load of each programHttp://www.cnblogs.com/ggjucheng/archive/2012/01/08/2316399.html3. Over

value is used to buffer data sent or received by TCP later.Note! The default values of rmem_max and wmem_max are 128 KB. In most cases, they do not need to be modified. The default values are also good for web or dns servers. However, when you feel a significant delay, you can modify the following parameters to increase the memory overhead. # Echo 'Net. core. rmem_max = 12582912 '>/etc/sysctl. conf # Echo 'Net. ipv4.tcp _ wmem = 10240 87380 125

Basic architecture of Linux operating system I. Linux process Management Process management includes: process scheduling, interrupt handling, signaling, process prioritization, process switching,Process state, process memory, and so on. What is a process: a process is an instance running on a processor that uses all the resources the kernel can handle to complete the tasks that the process needs to

over at the same time is too small, the server handles the connection more slowly. The server-side call to the Accept function is actually a connection that takes three handshakes from the connected accept queue. The Accept queue and the SYN queue are listen functions that are created and maintained. /proc/sys/net/core/somaxconn changes Each of the above is actually enough to write an article to analyze, here I just outline the next part of the parameter, note that in the change of

.conf.all.accept_redirects=0Net.ipv4.conf.eth0.accept_redirects=0Net.ipv4.conf.default.accept_redirects=0Net.ipv4.conf.lo.secure_redirects=0Net.ipv4.conf.all.secure_redirects=0Net.ipv4.conf.eth0.secure_redirects=0Net.ipv4.conf.default.secure_redirects=0Net.ipv4.conf.lo.send_redirects=0Net.ipv4.conf.all.send_redirects=0Net.ipv4.conf.eth0.send_redirects=0Net.ipv4.conf.default.send_redirects=05) Optimizing the TCP protocol stackOpen the TCP SYN cookie option to help protect the server from Syncfloo

Article title: network configuration file for Tuning LINUX network performance. 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. In

Talking about linux performance tuning 3: before partitioning and formatting, there is a special situation that may occur in the production environment: an ext3 file partition of the system, when a user writes a file to this partition, the system prompts that the disk space is full. However, when using the df-h command to view the file, the disk usage in this par

Article title: debugging tools for Tuning LINUX network performance. 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. This article descri

3.3 memory bottleneckOn a Linux system, using programs run at the same time.These programs support multiple users, and some processes are more used than others.Some of these programs use a portion of memory while the rest are "sleeping ."When an application accesses cache, the performance increases because an in-memory access retrieves data,Thereby eliminating the need to access slower disks.In a

Article Title: Linux performance tuning-virtual memory. 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. Simply put, the virtual memory i

mentioned below, you can try to enable the module via Modprobe: /sbin/modprobe tcp_htcp /sbin/modprobe tcp_hybla For the analysis of several algorithms, the details can be referred to the following: TCP congestion control algorithm advantages and disadvantages of the application of environmental performance analysis, but this does not involve the design of satellite communications specifically fo