cpu resources

Problem In the previous section, we introduced the importance of using the synchronization mechanism in multi-threaded programming and learned how to implement synchronization to correctly access shared resources. The relationships between these

This article analyzes the problem of slow MySQL database servers and proposes corresponding solutions. 1. Check the system status Check the status of the system by using some operating system tools, such as CPU, memory, swap, and disk utilization.

What is a Java garbage collector? Java garbage collector is one of the three important modules of Java Virtual Machine (JVM) (the other two are interpreters and multithreading mechanisms), providing memory for ApplicationsMemory Allocation and

Do you really know about Android? Google has brought us a new Android system different from IOs. Today, cainiao have become a dominant player and more people are using Android phones. However, do you really know about Android? Android has

Java Multithreading (a) Introduction to------concept: http://www.cnblogs.com/ysocean/p/6882988.htmlJava multithreaded Walkthrough (ii)------How to create processes and threads: http://www.cnblogs.com/ysocean/p/6883491.htmlJava multithreaded

The memory model of the thread32-bit operating system addressing space is 2 of 32, that is, 4GB of addressing space, the system in this 4GB space to divide the 1GB of space for the system-specific, known as the kernel space, with the highest

Java Multithreading Fundamentals: The Origins of processes and threadsIn the previous article, we've covered the basics of Java, and now we're going to talk a little bit more difficult: Java concurrency programming. Of course, Java concurrent

First, the meaningThe purpose of multithreading is to improve the utilization efficiency of CPU resources. In a single-threaded application, the program must wait for the current task to complete before it can continue with the next task, the CPU is

First, check the status of the system Check the state of the system through some of the operating system's tools, such as CPU, memory, swapping, disk utilization, or, depending on experience or the state of the system when it is normal, sometimes

There is a handy tool in the JDK "VISUALVM" can be visualized real-time visualization of the Java program memory changes, for understanding GC and Java memory Management is still a great help, before the forum to see the post about Java memory

The Debug Optimizeit Thread Debugger Overview This article gives you a brief understanding of Optimizeit thread debugger by introducing some of its main features. For more information, check out the Optimizeit thread Debugger user manual, or click

Referenced from: http://zhidao.baidu.com/link?url= Bxza5ftij8s22vfidrclpovzufiqqftiur6bgk59who8pvwmvrs9zlrrznu5te0xcvdzf6l6bis_1zer_8drok1, 1, adjust the design of data structure. This section is done before the development of the information system,

1, 1, adjust the design of data structure. This section is done before the development of the information system, and the programmer needs to consider whether to use the partitioning capabilities of the Oracle database, whether or not indexes are

A thread is a process that executes dynamically, and it also has a process from creation to death.In the Thread class, there is an enumeration inner class:　　The above information is represented by a picture as follows:First Picture:　　The second

In the development of Linux driver, the delay function is often used: Msleep,mdelay/udelay.Although both Msleep and mdelay have delayed effects, they are different.1.) for the module itselfMdelay is a busy wait function and cannot run other tasks

This series is a reading note for the Java Performance:the Definitive guide. OverviewIn the current JVM, there are mainly 4 garbage collector (garbage Collector): Serial recycler (Serial Collector), primarily for single-core computers

When using a Linux system, consume CPU resources too high and use scripting to troubleshoot:1, real-time monitoring, once there is a high CPU consumption process, the program starts;2, then the process analysis, to draw the corresponding thread;3,

First, dynamic content-based site optimization case1. Website Operating Environment DescriptionHardware environment: 1 IBM X3850 servers, single dual-core Xeon 3.0G CPU,2GB memory, 3 72GB SCSI disks.Operating system: CentOS5.4.Site Architecture: The

Java Multithreading Fundamentals: The Origins of processes and threadsIn the previous article, we've covered the basics of Java, and now we're going to talk a little bit more difficult: Java concurrency programming. Of course, Java concurrent

In Linux driver development, delay functions are often used: Msleep,mdelay/udelay. Although both Msleep and Mdelay have a delaying effect, they are different. 1.) for the module itself Mdelay is a busy wait function and cannot run other tasks during