Depending on what you mean by blocking, if it is an endless loop, of course it occupies the CPU, if it is waiting for a synchronization event, it will let out the CPU
Blue Water and blue sky [grade: ◆ (Elementary)] (credit: 100)Reply: 14:34:56Top
If the thread function structure is as follows:DWORD threadfun (lpvoid para){While (1){Blocking statement; // will the thread give up the
Configure Nginx multi-core CPU, worker_cpu_affinity usage and example 1.2-core CPU, enable two processes worker_processes2; worker_cpu_affinity0110; 01 indicates enabling the first CPU kernel; 10 indicates enabling the second CPU kernel worker_cpu_affinity0110; indicates that two processes are enabled. The first proces
Nginx does not turn on using multicore CPUs by default, we can make full use of multicore CPUs by adding worker_cpu_affinity configuration parameters. CPU is the task processing, compute the most critical resources, the more CPU cores, the better performance.
configuring Nginx Multi-core cpu,worker_cpu_affinity usage methods and examples
1.2-core
During system maintenance, it may be necessary to review the CPU usage at any time, and to analyze the system condition according to the corresponding information. In CentOS, you can view CPU usage by using the top command. After running the top command, the CPU usage status is displayed in full-screen mode, and will be in the dialog-using top-based commands, you
CPU time is an important resource, and sometimes we need to track the process that consumes the most CPU cycles at some time.In a normal desktop or laptop system, the CPU is in a high-load state and may not cause any problems. But for servers that need to handle a large number of requests, the CPU is an extremely impor
What is CPU/PSUThe full name of the Oracle CPU is critical Patch Update, where Oracle releases a security patch package for each quarter of its products, usually to fix security risks in the product.The full name of the Oracle PSU is patch Set update,oracle, a patch package that is released quarterly for its products, including bug fixes. Oracle picks up the number of downloads that are downloaded by the us
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 CPU to occupy 100% . After solving the problem complet
We can use/proc/cpuinfo to view CPU information. This file contains the data section of each processor on the system. There are six entries in the/proc/cpuinfo description for multi-core and hyper-thread (HT) technical checks: processor, vendorid, physicalid, siblings, coreid and cpucores. We can use/proc/cpuinfo to view CPU information. This file contains the data section of each processor on the system. T
Layer-3 Ethernet switches are quite common, so I have studied the problems related to the CPU packet sending and receiving of layer-3 Ethernet switches. I would like to share them with you here, hoping they will be useful to you. Layer-3 Ethernet switches are developing rapidly. On the one hand, bandwidth and switching capacity of network devices are greatly increased, and the types of protocols supported by devices are also increasing with the increa
Why is the server so slow? CPU, RAM, and disk I/O resources are exhausted, and ram is used up
Machine running is slow because it consumes too many system-specific resources. The main resources of the system include CPU, RAM, disk I/O, and network. Excessive use of any of these resources puts the system in trouble. However, if you can log on to the system, you can use a large number of tools to determine the
Cpu display information that you may not understand in CentOS command top
When using the top Command, the following line is displayed:
What are the meanings of each value in it?
I was asked this question today and found that the answer is not very clear. Sure enough, the most frequently used top commands every day are still unknown... Shame... So I checked some information:Official explanation
Cpu (s) indi
1.topUsage rights: All usersMode of use: Top [-] [D delay] [Q] [C] [s] [s] [i] [n] [b]Description: Instant display of process dynamicsD: Change the update speed of the display, or press s in the chat command column (interactive command)Q: There is no delay in the display speed, if the user has Superuser permissions, then top will be executed with the highest precedenceC: Toggle display mode, a total of two modes, one is to display the name of the execution file only, the other is to display the
Tags: priority GitHub official item CTO how RTU iowait RelatedAdd by Zhj: Here's a good explanation of what WA means in the top command, and we know that when Io is blocked, the operating system changes the process to a blocking state, and the CPU is scheduled to run other processes.When the CPU is idle, it checks for blocked IO (disk or network), and if so, it is WA; if not, that is the real idle. In the t
The cache memory is a temporary memory located between the CPU and memory. It has much smaller capacity than the memory, but the switching speed is much faster than the memory. The emergence of cache mainly aims to solve the conflict between the CPU operation speed and the memory read/write speed, because the CPU operation speed is much faster than the memory rea
Set of cpu monitoring tools for Linux
Set of cpu monitoring tools for Linux
1. top tools provided by the systemDetailed parameter description:15:46:08: current system time45 days: the system runs for 45 days.2 users: the system currently has two users logging onLoad average: 0.04, 0.01, 0.00 -- load of cpu every 5 minutes, 10 minutes, 15 minutesTasks: 105 total -
main pages interrupt means more access to the diskThe indicator can be viewed via the SAR command# sar-b 1 3pgpgin/pgpgout is the swap-in and swap out of memoryFault page breakmajflt main missing pages interruptvmstat command can also view some memory information# vmstat 1 5 Memory part is the RAM informationSi/so is swapped-in swap outSupplemental skillsWhen the top command is executed, the SWAP column is usually not displayed and you need to specify the displayIn the top interface, click 'f',
Resolving Excessive CPU Usage:
1. Separate application pool configuration for each Web site in IIS. That does not affect each other.
2, set the application pool CPU monitoring, not more than 25% (server 4CPU), refresh every minute, when the limit is closed.
Which application pool is obtained according to W3WP:
1, in the task Manager to increase the display of the PID field. You can see the process PID t
1, check the system CPU load and utilization of the command is: Top VmstatTop command: View CPU usage at the process level.Vmstat command: View system-level CPU usage.The following is a detailed illustration to analyze:The 1.1 Top command can view the CPU, memory, and other resources used by the process.During the top
In the "Linux page box-level memory management and processing details" blog, we talked about how the kernel calls functions such as alloc_pages to allocate one or more consecutive page boxes. In essence, these functions use the partner algorithm to get one or more consecutive idle page boxes from the specified zone_t.
As we will see in the "Slab distributor" post, the kernel often requests and releases a single page box. To improve system performance, if a single page box is requested or release
CPU restrictions in IIS:
Limit: 10000 (calculated as percentage * 1000, and 10000 indicates 10%)
Restricted operation: 1. noaction does not operate. 2. killw3wp deletes the process and restarts the new process within the specified time.
Limit interval (minutes): set the time limit, and how long it will take to restart and detect
Reference http://book.51cto.com/art/200908/146156.htm
8.7.2 CPU limit
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