MYSQL Performance Tuning and architecture design-instance analysis of factors affecting MYSQL Performance
Requirement overview
A simple discussion zone system requires users, user groups, and group discussion areas.
Brief analysis
1) tables that need to store user data;
2) tables that need to store group information and user-group relationships;
3) tables that ne
below: The total number of instances created on the left, the structure of the instance on the right, and the reference description below, which can be seen in the class Cyclicdependencies and referenced by HashMap.This can determine the location of the leak, and then according to the actual situation to analyze and solve. JVISUALVM remotely monitor Tomcat 1 and modify the remote Tomcat's catalina.sh profile, where it adds:
java_opts="$JAVA _opts
-djava.rmi.server.hostname=192.168.
This article mainly introduces how to correctly manage the performance of DB2 For z/OS or OS/390, today, major organizations face a major problem: how to make their applications run very well and maintain high efficiency.
This will be an endless task, and you will have to repeat multiple times to collect, analyze, and check performance-related statistics. When a
Over the past decade, Oracle has become one of the most professional databases in the world. For IT professionals, it is important to ensure that Oracle's powerful features are used to improve the productivity of their companies. One of the most effective ways to do this is through Oracle tuning. It has a large number of tuning parameters and techniques to improve the p
Today, we will focus on the description of the actual operational performance of correctly managing DB2 For z/OS or OS/390. Today, major organizations are facing major problems, it mainly aims to make their applications run very well and maintain high efficiency.
This will be an endless task, and you will have to repeat multiple times to collect, analyze, and check perf
System Performance Tuning for CentOS servers
Linux is an open-source operating system that supports various hardware platforms. Linux servers are world-renowned. The main difference between Linux and Windows is that, by default, a Linux server does not provide a GUI (graphical user interface) but a command line interface. The main purpose of the GUI is to efficiently process non-interactive processes. The r
rich, powerful, and flexible, and you can do a variety of tasks with it, and in this article we'll discuss some tips for improving the performance of Linux servers.1. Tuning the Linux kernel elevator algorithm for disk I/OAfter selecting the file system, there are some kernel and mount options that may affect its performance, one of which is the elevator algorit
. GC Tuning target has three basic ideas: Reduce GC frequency, can increase the heap space, reduce unnecessary object generation, reduce GC pause time, can be achieved by reducing heap space, using the CMS GC algorithm, avoid full GC, adjust the CMS trigger scale, avoid Promotion Failur E and Concurrent mode failure (the older generation allocates more space, increases the number of GC threads to recover faster), reduces large object generation, and s
analysis of Web container thread pool server > Application server > (server name) >
Thread pool > Webcontainer minimum Size: 10
Maximum size: 50 monitor Web container thread pool maximum by TPV (within acceptable time range), set EJB cache server > Application server > (server name) > EJB tell cache set > EJB cache setting > Cache large Small cache Size: 2053
Purge interval: 3000 For example through TPV monitoring found that Ejbstore () has a high call rate and CPU utilization is very low, can
Label:Poptest is the only training institute for developing Test and development engineers in China, aiming at the ability of the trainees to be competent in automated testing, performance testing and testing tools development. If you are interested in the course, please consult qq:908821478, call 010-84505200. 1 Overview of Performance optimizationsThis chapter provides an introduction Toperformance
Performance TuningIt is undoubtedly a huge topic and a very important part of many projects. Performance Tuning is well known. After all, performance tuning covers too many aspects.ArticleLet's take a look at the process of performance
efficiency. Some of the original tuning settings, such as Mapjoin, PPD predicate push-down, and so on, have realized the automatic tuning in the continuously evolving products. Different stages of product tuning parameters and details will be inconsistent, but familiar with the tuning ideas and methods can be done ext
This technical article is provided by the "International Oracle user group" (ioug). It is an organization composed of user groups. This organization provides high-quality information, training, networking, and support, to improve the level of Oracle Database experts and database developers. This article is excerpted from the foreseeable procedural performance tuning of Oracle Applications by David Welch. Cl
purpose of the flow queue data is to determine the data in the table where the data will be keptis insert,update and delete, and each operation generates the corresponding log information. In MySQL, if theThe storage engine that holds the transaction, the amount of this log generation is doubled. And if we go through some mature third-party queue software toThe performance of this queue data processing function will be multiplied.3. Super-Large text
, Running-------------------+-----------------+-------+------------- +--------------------Maxscale> list SerUnknown or missing option for the list command. Valid Sub-commands is:Clients List all clientsDcbs List All DcbsFilters List All FiltersListeners List all listenersModules List all currently loaded modulesMonitors List all monitorsServices List all the servicesServers List all serversSessions List all sessionsThreads List Polling ThreadsCommands List Registered commandsMaxscale> quit 4 tes
Nginx Performance Tuning
Address: http://nginx.com/blog/tuning-nginx/
Tuning NGINX for Performance
Nginx Performance Tuning
NGINX is well known as a high
Address: http://nginx.com/blog/tuning-nginx/
Tuning nginx for performance
Nginx Performance Tuning
Nginx is well known as a high performance Load balancer, cache and web server, powering over 40% of the busiest websites in the wor
your system battery or flash drive on your mobile device. One benefit of using ramlog is that, there is no need to worry that a daemon sends a message to syslog every 30 seconds. In the past, the hard disk must be running at any time, which is not good for hard disks and batteries.19. Package and writeA fixed size of space is allocated in the memory to store log files, which means that the hard drive of the laptop does not need to keep running, and only runs when a daemon needs to write logs, n
System Performance Tuning tool under Perf event:linux 2011-05-27 10:35 Liu Ming Ibmdwfont Size:T | T The Perf Event is a performance diagnostic tool that is distributed and maintained with the Linux kernel code, maintained and developed by the kernel community. Perf can be used not only for performance statistical ana
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