high cpu usage fix

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 usage of the event Process

corresponding development, and he can locate his problem.Finally, summarize the methods and techniques for troubleshooting CPU failures:1. Top command: Linux command. You can view real-time CPU usage. You can also view CPU usage for the most recent period of time.2, PS comm

After Tomcat is started on the server, use top to view CPU usage to 200%, although the server is configured with 8 cores, but the business volume is large and cannot be carried. As a result, troubleshoot the problem by using the following methods: 1. View the number of processes with high CPU

LZ develops an in-house application for querying hive data usage. There is always a high CPU situation after deployment, and local testing is difficult to reproduce. The previous several times have been repeated through the direct restart after the use of, because it is internal use, reboot is not a big impact (of course, each reboot is incidentally changed the b

The system runs a high CPU alarm, generally can be found through the top or task manager which processes are using the CPU, but this granularity does not let us know more, we need to find out which part of the program is CPU-intensive and what is occupied by the CPU, so as t

Guidance: Check the code first: 　　 　　 　　 　　 Code 1 　　 Using system; 2 　　 Using system. Threading; 3 　　 4 　　 Namespace highcpu 5 　　 　　 　　 　　 　　 {6 　　 Class program 7 　　 　　 　　 　　 　　 {8 　　 Static void main (string [] ARGs) 9 　　 　　 　　 　　 　　 {10 　　 Console. Clear (); 11 　　 Console. writeline ("go to the command line, switch to the windbg directory, and run adplus-Hang-PN highcpu.exe-o C: // dumps"); 12 　　 Console. writeline ("if you want to stop, press Ctrl + C to end the program"); 13 　　 Console. w

- Dweblogic.management.server=t3://10.190.118.154:37001-dfile.encoding=gbk-dwlw.iterativedev=false- Dwlw.testconsole=false-dwlw.logerrorstoconsole=false-dweblogic.ext.dirs=/app/wls10/oracle/middleware/patch_ wls1035/profiles/default/sysext_manifest_classpath:/app/wls10/oracle/middleware/patch_ocp360/profiles/default/ Sysext_maNifest_classpath WebLogic. Server1.2 Get Process NumberFrom the process information can be learned that the PID of the process is 9391, is initiated by the application acco

amount of time. In general, as long as the current number of active processes per CPU is not greater than 3 then the performance of the system is good, if the number of tasks per CPU is greater than 5, then the performance of the machine is a serious problem. High CPU usage

, this will be a challenge to yourself. If you solve it, it will be just the embodiment of your value. This is the same as the so-called hero in the world. All right, let's talk a little bit about it. Please visit windbg, the star of today. I will not talk about windbg any more. I only published my two points of understanding about him, which is quite popular: 1) The Memory package can be captured, that is, the dump file; 2) output the actions being executed in the memory using commands; 3rd) S

1, phenomenonWrite a storm application that synchronizes the table to hbase primarily via MySQL's binlog. After running for a period of time found that the CPU usage often soared to more than 200%, and then a variety of message accumulation alarm and so on, there are various problems2, research processCPU usage is high

CPU to occupy high computer very card solution Some anti-virus software will be on the Web page, process, plug-ins, mail monitoring, may cause the scanning of a number of procedures caused by the death cycle Inspection time installed a number of anti-virus software (many novice friends of the computer will appear this problem, install some software when automatically installed a number of anti

Tags: com nbsp full table Scan Technology share slow Query technology str image OrderBasically, every time our DB instance has a CPU spike is read, and very few write-induced CPUs are high. This means that read, random read, sort, will consume CPU. And the write is mainly IO behavior, especially sequential write, do not need to account for CPU.This time, RDS is v

This article is guided by: The trigger causes deadlock, the job is many and frequent, the use of the middle table, the large number of cursors, the design of the index is unreasonable, the transaction operation is frequent, the SQL statement design is unreasonable, will cause the query inefficient, affect the performance of the server. We can use SQL Server's own profiling Trace tool SQL Profiler to analyze the source of problems caused by database design and to do targeted processing; here's ho

Tags: path CONFIG input address 100% LSE. COM Cache imageThe day before yesterday, the site has become very slow to run the situation even many requests are suspended, the remote link interface is a card one card. Open Explorer A look at the original CPU occupies 100%, where Memcache.exe consumes more than 80% CPU. When the Memcache service was restarted, the CPU

Java.util.concurrent.locks.LockSupport.parkNanos (Locksupport.java:215) at Java.util.concurrent.locks.abstractqueuedsynchronizer$conditionobject.awaitnanos ( Abstractqueuedsynchronizer.java:2078) at Java.util.concurrent.scheduledthreadpoolexecutor$delayedworkqueue.take (Scheduledthreadpoolexecutor.java :1093) at Java.util.concurrent.scheduledthreadpoolexecutor$delayedworkqueue.take (Scheduledthreadpoolexecutor.java :809) at Java.util.concurrent.ThreadPoolExecutor.getTask (Threadpoolexecutor.jav

and memory consumption;The CPU can be judged directly in the top of the CPU%us value can be, usually under 50% is normal, once more than 60% or even high to 80-90 and stable, then there must be a problem;When judging memory, it is important to look directly at the first line of mem: The used value is not accurate, because usually after a period of time, this val

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 Static Void Main ( String [] ARGs) 9 { 10 Console. Clear (); 11 Console. writeline ( " Go to the command line, switch to the windbg directory, and run adplus-Hang-PN highcpu.exe-o c: \ dumps " ); 12 Console. writeline ( " To st

Under the Win XP system, many users have turned on the video acceleration function of win Media player (hereinafter called WMP) player, in this way, can be a better HD playback effect for some old graphics cards. When the operating system to win 7 o'clock, the vast majority of users of the hardware environment, has been able to respond well to the needs of high-definition playback, therefore, in Win XP play a role in the video acceleration function, n

Today, when using the curl_multi function to obtain some Internet content, I found that as long as the curl_multi function is run, my cpu usage is very high, later, I came to a webmaster and shared my solutions to this problem. I hope to help you... today, when using the curl_multi function to obtain some Internet content, I found that as long as the curl_multi f

People in the group today asked for a scenario where high CPU usage was used for testing. It's easy to do "bad" things because it's so hard to do things. There are many ways to implement this requirement, such as using some stress testing tools. The first thing I think about is a hash JOIN. This connection consumes CPU