svchost high memory usage

Problem Description: The Linux server's memory usage exceeds the threshold and an alarm is triggered. First, use the free command to observe the memory usage of the system, which is displayed as follows: totalusedfreesharedbufferscachedMem: 24675796245871448865203570121612488-/+ Linux system Problem Description When th

sent per second by the block device;For example, if we read the file,Bo will be greater than 0. Bi and Bo are generally close to 0, otherwise the IO is too frequent and needs to be adjusted.Inchrepresents per second The number of interrupts, including time interruption, of the CPU;Csrepresents the context per second number of switches,When invoking the system function, it is necessary to switch the context, the switch of the thread, and the process context.The smaller the value, the better, too

MySQL server swap usage high results in db very slow very cardEnvironment Introduction:centos:6.xMySQL version: 5.5.40Failure Reason analysis:The physical memory is 16g,swap is 4G. At this point, MySQL itself has taken up 14G of physical memory, while other applications or system processes need 3G of

sent per second by the block device;For example, if we read the file,Bo will be greater than 0. Bi and Bo are generally close to 0, otherwise the IO is too frequent and needs to be adjusted.Inchrepresents per second The number of interrupts, including time interruption, of the CPU;Csrepresents the context per second number of switches,When invoking the system function, it is necessary to switch the context, the switch of the thread, and the process context.The smaller the value, the better, too

View multi-core CPU commandsMpstat-p All and sar-p allDescription: Sar-p all > Aaa.txt redirect output to file Aaa.txtTop commandOften used to monitor Linux system conditions, such as CPU, memory usage, the programmer basically know this command, but it is strange to use it very few people, such as the top monitor view of memory value of the meaning of a lot of d

the number by 1024 in MB. Usage For WordPress, you only need to call the memory_get_usage function in the footer. php file in the topic folder. The output of this statement is in MB, with two digits after the decimal point. For more information, see the bottom of this site. Digress Of course, if you want to perform a detailed test, you canCodeBefore Execution, before the template call, and after the Page code is executed, call the fun

Http://blog.csdn.net/hguisu/article/details/7376705 As mentioned in the previous PHP efficient writing, do not copy variables, especially arrays, whenever possible. In general, the memory usage of PHP arrays is only 1/10. That is to say, an array of 100 MB memory in C language requires 1 GB in PHP. We can roughly estimate the

game optimization is often a more important part of game development, the following share some of their own in performance optimization, memory optimization, package size optimization experience and summary. Profiler is a unity-brought, used to analyze the game performance, memory usage, such as very good tools, you can accurately locate the impact of game perfor

How to view physical memory usage under Linux systemsLinux looks at memory and CPU usage generally with the top command, but the actual use, the top view of the memory usage is very high