Operating Win7 Pure version of the system encountered a sudden high CPU usage and suddenly become low, seriously slowing down the system running speed, but also led to computer fever, if a long time, the loss of computer hard disk is very large, why this situation? Many users do not know the CPU
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, will be extremely intensiv
Oracle CPU is too high to handle, this article will describe the Oracle process CPU usage is too high, need to know more than friends can refer to the
1: First use the top command to upload the
are as follows:650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/71/9B/wKioL1XUtIezrmHRAACDgefRG2U000.jpg "style=" float: none; "title=" 2.png "alt=" Wkiol1xutiezrmhraacdgefrg2u000.jpg "/>650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/71/9E/wKiom1XUsnqQboygAACDZ4qPLB8515.jpg "style=" float: none; "title=" 1.png "alt=" Wkiom1xusnqqboygaacdz4qplb8515.jpg "/>So you need to add an additional index to the second field.Refer to the following article about the index of the composi
High Linux cpu usage debugging
After the top command is used to debug the program today, the cpu usage of the program is found to be very high and it has been running at 99. This is terrible, so we can debug the program.
Use the t
Solution to high CPU usage in win10 System
With the release of the win10 preview version, more and more users have installed the win10 system to experience the power of the win10 system. In a computer, CPU is the core part. Some users find that the CPU
Nodejs mkdirP module causes high CPU usage, nodejsmkdirpNodejs mkdirP module causes high CPU usage
When I recently deployed the node. js project on the server and started it, I found that the
Nodejs mkdirP module causes high CPU usageNodejs mkdirP module causes high CPU usage
When I recently deployed the node. js project on the server and started it, I found that the cpu usage
Take the hbase benchmark to analyze which threads use the higher CPU, the environment is Linux, the benchmark command:HBase org.apache.hadoop.hbase.PerformanceEvaluation--rows=500000--nomapred--presplit=5--writetowal=true Randomwrite 5First look at the process and thread ID that consumes the highest CPU and execute the command:[Email protected] logs]$ PS Hh-eo pi
The production of Java applications, CPU usage has been very high, often up to 100%, through the following steps to solve the perfect, share. 1.jps gets the PID of the Java process. 2.jstack PID >> java.txt Exports the thread stacks that the CPU consumes
The production of Java applications, CPU usage has been very high, often up to 100%, through the following steps to solve the perfect, share.1.jps gets the PID of the Java process.2.jstack PID >> Java.txt Exports the thread stacks that the CPU consumes
The following is a simulation process in Linux1. Simulate high CPU usage in a session, as shown below:DeclareNum int: = 0;BeginLoopNum: = num + 1;End loop;End;/
2. Run the top command in the shell window to view CPU usage:Pid user pri ni size rss share stat %
Parallel recovery of large oracle transactions leads to database performance degradation-high cpu usage-processing ideas parallel recovery of large oracle transactions leads to database performance degradation-high cpu usage proce
How to locate Java threads with high CPU usageTools:1Jstack:jstack is used to print the Java stack information for a given Java process ID or core file or remote Debugging service, if it is on a 64-bit machine, you need to specify the option "-j-d64", The Jstack usage of Windows only supports the following way. pidsta
: ID of each process.
User: The user to whom the process belongs;
Pr:priority, the order of priority execution of the program, the smaller the sooner be executed;
The shorthand for Ni:nice is related to Priority, and the smaller the earlier it is executed;
The utilization rate of%cpu:cpu;
%mem: The usage rate of memory;
time+: The accumulation of
How to locate a dead loop or high CPU usage (Linux)determine if the CPU is too highUse top to see if there is high CPU usageFind a threadSort all threads for processes with high
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