drupal performance tuning

Label:Original: SQL Server database Performance tuning tipsThe reasons for the slow query are many, and the following are common: 1. No index or index is not used; 2, I/O throughput is small, forming a bottleneck effect; 3, insufficient memory; 4, the network speed is slow; 5, the amount of data queried is too large; 6, lock or deadlock; 7, the return of unnecessary rows and columns; 8, query statement is n

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

Some small aspects of database Performance tuning:1. 1 Performance IndexDatabase performance is generally measured in two metrics: response time and throughput. The faster the response, the greater the throughput and the better the database performance. Response time and thr

Lao Li share: Performance tuning operating system-level load analysisThe load is broadly divided into two categoriesA.CPU loadB.I/O loadIf an application needs to perform large-scale computations, although the program and disk do not have data I/O, it can take a long time to complete processing, mainly because the program relies on CPU computing, which creates the load pressure on the cup, which is called a

Performance Tuning Experience SummaryThe problem arises:In the daily environment, a server, for example, the machine's number of visits per second is around 368, the maximum number of visits at 913. The performance of the external service is that every two or three hours there is a second level of time client request timeout, in the case of increased traffic, the

compressing and extending the heap space:-xx:minheapfreeratio: Sets the minimum idle scale for heap space. The default is 40. When the free memory in the heap space is less than this value, the JVM expands the heap space.-xx:maxheapfreeratio: Sets the maximum idle scale for heap space. The default is 70. When the free memory in the heap space is greater than this value, the heap space is compressed and a smaller heap is obtained.When-xms and-xmx are equal, both parameters of-xx:minheapfreeratio

Performance Tuning for Nginx1 Modify the core number of CPUs corresponding to the Nginx work process this is generally your CPU core number of twice times, founder is multiples, specific to several times to see the specific hardware configuration2 Modifying the file descriptor 65536 ulimit-n Permanent effect can be changed/etc/sysctl.conf3 Modifying the Linux kernel scheduling algorithm Epoll4 Modifying the

First, the main method of neural network performance tuning the technique of data augmented image preprocessing network initialization training The selection of activation function different regularization methods from the perspective of data integration of multiple depth networks 1. Data augmentation The generalization ability of the model can be improved by increasing the amount of data without changing t

Original article: http://www.mastertheboss.com/jboss-performance/jboss-as-7-performance-tuning JBoss Application Server Tuning Although many architects and software engineers agree that the performance of about 70-80% of applications depends on the code of the application it

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

Go language Development (eight), go Language program testing and performance tuning Introduction of the Go Language Automation testing Framework 1. Introduction to Automated testing framework The testing of the Go Language standard package provides a framework for unit testing (functional testing) and a common approach to performance testing (stress testing) that

A collection of Java performance tuning tipsBrother LianResources available for program utilization ( memory,CPU time, network bandwidth, etc. ) is limited, the goal of optimization is to allow the program to complete the scheduled tasks with as few resources as possible. Optimization usually consists of two parts: reducing the volume of the Code and improving the efficiency of the Code. The main discussion