This is my blog on my last reprinted "figuring Out" why my SVCHOST. EXE is on 100% CPU without complicated tools in Windows 7 translation. The principle of my translation is to strive to smooth nature, so many places are not strictly in accordance with the original words, but strive to use more in line with our language habits to express similar meaning.=========
Tens record of Discuz forum led to MySQL CPU 100% optimization Note In March 2007, I wrote an article on solving a MySQL server process CPU usage 100% Technical Note (http://www.xiaohui.com/weekly/ 20070307.htm), when it comes to resolving a MySQL database access that has 600,000 records, causes the
MySQL
It was found that the host ran several Discuz forum programs, and several tables of the Discuz forum also had this problem. So smoothly together to solve, CPU occupancy down again.
A few days ago, a friend through this article found me, said he is running the latest version of the Discuz, MySQL occupies 100% of the CPU, leading to the system of suspended animatio
PostgreSQL CPU Full (100%) performance analysis and optimizationTransferred from: https://help.aliyun.com/knowledge_detail/43562.htmlIn database operations, a DBA often encounters a more urgent problem, that is, the sudden CPU full (CPU utilization reaches 100%), causing the
In the afternoon, a friend on MSN sent a dump file, saying that the CPU usage of the Web server is at 100%. The problem could not be found. Let's take a look, let's upload the dump file and find out where the problem is.
Framework2.0 is a 2 k Windows OS.
After loading the dump file, load the SOS extension debugging module of Version 2.0:
. Load c: \ windows \ Microsoft. NET \ framework \ v2.0.50727 \ SOS. d
Phenomenon:Flagship store freight library CPU usage 100%,load higher, resulting in subsequent requests failing.Restart the server, CPU, load back to normal.Trigger conditions:(1) Linux kernel version 3.6 and below. (Most of the online machines are 2.6.32)(2) mysql-connector-java5.1.31 version and below. (each line of business needs its own check)(3) Mysql-client
SQL Server Cpu 100% is not very common. It generally causes performance problems, such as blocking, connections, and I/O disks. Therefore, the usage of SQL Server is generally low. However, in some cases, the Cpu usage is 100%.
What operations does SQL Server use CPU resourc
Analysis on single CPU usage of java application linux service 100%, javalinux
In the previous project process, performance tests were performed on the linux server after the project was completed. When the Service ran, it was found that the cpu usage was very strange. The java application ran a single cpu Full, other
SQL Server CPU 100% is not very common. It generally causes performance problems, such as blocking, connections, and I/O disks. Therefore, the usage of SQL Server is generally low. However, in some cases, the CPU usage is 100%.
What operations does SQL server use CPU re
file selection compatibility. Svchost.exe is sometimes a headache, and when you see that one of your svchost.exe takes up a large CPU, you can go to the next aports or fport to check its corresponding program path, which is the Svchost.exe, if not C. : Under Windows system32 (XP) or C:winntsystem32 (2000), that's suspicious. Upgrade antivirus software antivirus bar. Right-clicking a file causes 100% of
The recent TOP command of SuSE Linux 10 (SP3) always shows that the zmd process consumes 100% of the CPU resources, while the system-level CPU usage in the system is more than 40% and never released. After the server is restarted, the fault persists. The following describes and processes the problem.
1. The top command shows that zmd
Nginx of the worker process hangs and a CPU load up to 100% Scenario Description:
#tcp Connection Status[Email protected] ~]# Netstat-nat |awk ' {print $6} ' |grep-v ' Foreign ' |grep-v ' established ' |sort|uniq-c|sort-rn3010 time_wait537 establishedSyn_recvFin_wait2Close_waitFin_wait19 LISTEN3 Last_ack#nginx Process#cpu Use, R status--run ,
when 'max _ execution_time 'ini option does not stop script execution for some reason
'0s' means 'off'
The default value is 0 seconds. That is to say, the PHP script will be executed continuously. In this way, when all PHP-CGI processes are stuck in the file_get_contents () function, the nginx + PhP webserver can no longer process new PHP requests, nginx returns "502 Bad Gateway" to the user ". Modify this parameter to set the maximum execution time of a PHP script. For example, if you chan
1: Check the system
Sar-U 5 5
2: check who is using the CPU
Topas
PS-Ef | grep ora # Check the size of column 4 C (unit, 100 per CPU)
3: Check the number of CPUs
/Usr/sbin/bindprocessor-Q
Lsattr El proc0
4: two possibilities:
1: A Background (Instance) Process
2: An Oracle (User) process # This is the largest pos
Apache is always full of memory, and apache on the 100% CPU server is always full of memory, 100% of CPU, and all the websites on the server cannot be opened, so the process is finished. (It will automatically start) sometimes it won't work for half a day. sometimes it's okay to use this server for two or three days ..
Apache is always full of memory, and apache on the 100% CPU server is always full of memory, 100% of CPU, and all the websites on the server cannot be opened, so the process is finished. (It will automatically start) sometimes it won't work for half a day. sometimes it's okay to use this server for two or three days ..
Sometimes, the Linux server running Nginx, php-cgi (PHP-FPM) Web services, suddenly the system load up, use the top command to view, many php-cgi process CPU utilization is close to 100%. Later, I tracked the discovery that this kind of situation is closely related to PHP's file_get_contents () function.
In large and medium-sized Web sites, API interface calls based on the HTTP protocol are commonplace. PH
iis|window|windows2003| Server | solve
The following is Scenario 1:Phenomenon: When the machine is debugging or allowing IIS to be interrupted by an abnormal interrupt service (such as a power outage), and then IIS runs the page again, CPU resources occupy 100%, even if the reboot is invalid.Cause: When an interrupt occurs, IIS writes an exception log, but this time it writes a garbled, causing
://www.imagemagick.orgCopyright: Copyright (C) 1999-2014 ImageMagick Studio LLCFeatures: openMP
The first result is the single-thread mode, and the second result is the multi-thread mode, because the multi-thread mode of imagick has bugs, therefore, if you are using the multi-threaded imagick mode at the beginning, yum remove imagemagick must be used to uninstall it and re-install it.
You only need to add the following red font to the installati
"Do not use jstack Please check the information yourself"
Using JconsoleOpening jconsole,jconsole in window is a graphical monitoring tool!
In the windons command window, output JConsole
Using the Java Visual VMOpening JVISUALVM,JVISUALVM in window is a graphical monitoring tool!
In the windons command window, output JVISUALVM
Second, Java
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