what is high cpu

　　The first step, show process CPU, such as displaying IP input process is using a lot of CPU, examines the following: One, Fast switching Whether it is disabled on a large flow outgoing interface. You can view the interface traffic with the show

First, the problem found In a test or production environment, when the Tomcat CPU is found to remain at a certain high level, the program processing is definitely out of the question, the next step is to find out why. The following figure shows

The last few days to update the program, testing the function, found that the application login is very slow, thought to be a problem with the application, but wait for a long time after the discovery of the application login is OK. Check the

Mysql causes high CPU usage. The server environment Liunx AS4 + PHP5 + Mysql5 + Apache 2 When I used the TOP command to query the system performance, I found that the CPU often reached 100% and started to think it was a DDOS attack ...... After a

In the process of using the system, occasionally there will be some process caused by the CPU and other hardware resources to occupy too much, and then the situation of the system lag. How can a WIN10 user find that "WMI Provider Host" takes up too

We use the jstack from the JDK to analyze it. When Linux CPU is consumed by Java programs, the following process might help you:1.top Find out which process consumes a high CPU21125 co_ad2 0 1817m 776m 9712 S 3.3 4.9 12:03.24 java5284 co_ad 0 3028m 2

Background: Performance monitoring shows that the CPU usage of a single core of the online server has reached 100%, which is caused by one of our core services. Thanks to the fact that our service processes are undertaken by multiple identical

 Problem description: during this time, the machine always encountered a strange problem: the Worker Process forcibly ended the one with the highest CPU usage. After about two minutes, the same problem still occurred. Problem Association: Knowledge

From: http://blog.csdn.net/ligt0610/article/details/7265903 1. Use the TOP command to find the process with the highest CPU utilizationRoot @ xxx :/#TopTop-09:36:26 up 22 min, 2 users, load average: 6.02, 5.10, 3.58Tasks: 43 total, 1 running, 42

1. symptom description On the surface, the man-machine program crashes and all functions cannot work properly. This problem has appeared many times. It took a week to understand it. Later, we summarized the tracking process and analysis and provided

Article Source: http://www.cnblogs.com/cy568searchx/archive/2013/10/28/3391790.htmlYour software stops service at some point, CPU usage reaches 100%+, one possible cause is a dead loop, assuming there is a potential dead loop in the program

Parallel recovery of large oracle transactions leads to database performance degradation-high cpu usage  The rollback of a large transaction has a very high cost, not only locking the required resources And the CPU and IO consumption, especially IO,

View Code First: Code Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 1 Using System; 2 Using System. Threading; 3 4 Namespace Highcpu 5 { 6 Class Program 7 { 8

Analysis on High CPU usage of HBase Thrift2High-level analysis of HBase Thrift2 CPU usageDirectory Directory 1 1. symptom 1 2. Problem locating 2 3. Solution 5 4. Related Code 5 1. symptom description Port 9090 of the external connection times out,

Symptom: The current project starts for a period of time and has a service that causes CPU usage to persist over 30%Environment: Windows 7, Cpu:8 Core, Memory: 8g MemoryPositioning process:Start the project and view the Java process IDCheck the CPU

The CPU is too high, typically with a dead loop, or a CPU-intensive application.Positioning problem Ideas:1. See which process battle is too high.2. Check to see which thread is consuming too much of the process.3. After checking the corresponding

Mysql database configuration optimization (high cpu usage) output results show which threads are running, can help identify problematic query statements Show processlist; Wait_timeout,That is, the number of sleep connection timeout seconds. if a

During the recent website activities, the order volume was several times more than usual. During this period, the cpu usage of the two APIs reached 60%, and the memory usage was normal. Preliminary suspicion is the reason for the large amount of

Test and solution for high memory usage and high CPU usage of MySQL. The changes are as follows: Innodb_buffer_pool_size = 576 M-> 256 M InnoDB Engine Buffer occupies a large proportion, the first is to use it to open the knifeQuery_cache_size = 100

1. Find process Top view process Resource Usage It is clear that Java's two processes 22714,12406 consume too much CPU. 2. Find thread use top-h-P View Thread occupancy 3. Find Java stack information convert thread ID to hexadecimal #printf%x 15664#